GB 18299-2001 Integrated valves for liquefied petroleum gas cylinders for motor vehicles
Some standard content:
GB18299--2001
The integrated valve of liquefied petroleum gas cylinder for motor vehicles is an important part of the liquefied petroleum gas cylinder for motor vehicles, which works when the motor vehicle is in operation. This standard is formulated to achieve normalization and standardization and ensure quality and safety. This standard uses the provisions of the United Nations Economic Commission for Europe (ECE Regulation No. 67) on the special devices for liquefied petroleum gas motor vehicles (1987 edition), and refers to the relevant provisions of the Australian Standard AG804-1981 "Interim Provisions on Accessories of Liquefied Petroleum Gas Cylinders for Vehicles", AS1425-1984SSA Automobile Liquefied Petroleum Gas Regulations and my country's GB17259-1998 "Liquefied Petroleum Gas Cylinders for Motor Vehicles". This standard is compiled based on my country's experience in introducing, manufacturing and using integrated valves for liquefied petroleum gas cylinders for motor vehicles. In Regulation No. 67 of the European Commission, there is no specific definition of integrated valves. This standard defines integrated valves specifically and refines the regulation in other aspects in an operational manner, combining my country's national conditions with efforts to align with foreign advanced standards.
Appendix A of this standard is a reminder appendix. This standard is proposed by the State Administration of Quality Supervision, Inspection and Quarantine. This standard is under the jurisdiction of the National Technical Committee for Standardization of Gas Cylinders. This standard was drafted by Guangdong Nanhai Aohua Liquefied Petroleum Gas Equipment Co., Ltd. and participated in the preparation by China Municipal Engineering North China Design Institute.
The main drafters of this standard are: Zhang Liangqi, Wang Jianmin, Yi Enbo, Fan Kangming, Liang Changrong. 1 Scope
National Standard of the People's Republic of China
Automotive LPG steel cylinder multivalveiiKAoNiKAca-
GB1B299--2001
This standard specifies the basic structure, technical requirements, test procedures, inspection rules and markings of motor vehicle LPG steel cylinder multivalve.
This standard applies to motor vehicle LPG steel cylinder multivalve. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is released, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T3098.1—2000 Mechanical properties of fasteners Bolts, screws and studs GB/T4423—1992 Copper and copper alloy drawn bolts GB/T7306.1—2000 55° Sealing pipe threads Part 1: Cylindrical internal threads and external threads with a return taper GB/T7306.2-2000 55° Sealing pipe threads Part 2: Conical internal threads and external threads with a return taper GB9969.1—1998 General provisions for instructions for use of industrial products GB17259—1998 Liquefied petroleum and gas cylinders for motor vehicles HG/T2579—1994 O-ring rubber seals for ordinary hydraulic systems 3 Definitions
This standard adopts the following definitions.
3.1 automotive LPG cylinder multivalve A valve that integrates a filling device, an 80% filling limiter, a safety valve, a stop valve, a flow limiting valve and a liquid level display device, and is installed on a motor vehicle liquefied petroleum gas cylinder with only one hole, hereinafter referred to as an integrated valve. Motor vehicle liquefied petroleum gas cylinders are referred to as cylinders. 3.2 Filling unit
A device with a one-way valve installed on the air inlet channel of the integrated valve body. 3.3 80% filling limiter 80 percent stop unit A protective device that is installed on the air inlet channel of the integrated valve body and can automatically stop inflation when the volume of liquefied petroleum gas in the cylinder reaches 80% of the maximum volume of the cylinder to prevent overfilling. 3.4 Excess-flow valve
A device that is installed on the air outlet channel of the integrated valve body and can automatically stop when the flow in the specified direction exceeds a predetermined value to prevent the occurrence of an overflow state. The device is in the open state when the liquefied petroleum gas fuel supply system is working properly. 3-5 Liquid level indicator A device with a limit filling warning scale that displays the liquid level height in the cylinder. Approved by the National Quality and Technical Supervision Bureau on January 10, 2001 and implemented on October 1, 2001
4 Product classification and model marking method
4.1 Product classification
GB 18299—2001
Classification based on the inner diameter of the matching cylinder and the installation angle of the integrated valve on the cylinder. 4.2 Model marking method
The Chinese phonetic letter CYF represents the liquefied petroleum gas cylinder valve for motor vehicles; the Chinese phonetic letter Ding represents the valve as an integrated structure! D, represents the inner diameter of the matching cylinder should comply with GR17259—19984.3 Table 1 Inner diameter series tα represents the installation angle of the integrated valve on the cylinder. The marking method of integrated valve model is as follows: CYFJ
Retrofit serial number (Roman numerals)
Installation angle a
Inner diameter of matching steel cylinder D
Integrated structure
Vehicle liquefied petroleum gas cylinder valve
4.3 Marking example
For example: Cylinder model: CYSW314-56-2.2, installation angle: 25°, the model of the integrated valve for liquefied petroleum gas cylinder for motor vehicles with retrofit serial number 1 is; CYFJ314-251.
5 Basic structural requirements, basic connection methods, installation angles and main parameters5.1 Basic structural requirements
The integrated valve is composed of the following functional devices through a total valve body, namely: filling device, 80% filling limit device, safety valve, flow limiting valve, liquid level display device, stop valve. These devices can be connected to the integrated valve body separately, or they can be appropriately combined and then connected to the integrated valve body. Appendix A (suggested appendix) is the structural type that can be used. 5.2 Basic connection method
5.2.1 The concave and convex flange connection should be adopted, and the number of screws should be not less than 6, evenly distributed. When the diameter of the cylinder end of the flange is greater than or equal to $40, the screw specification should be not less than M6; when the diameter of the cylinder end of the flange is less than $40, the screw specification should be not less than M4. The mechanical properties and materials of the screws should comply with the relevant provisions of GB/T3098.1. 5.2.2 The inlet and outlet threads shall adopt tapered pipe threads or metric fine pitch threads that comply with GB/T 7306.1~7306.2. 5.3 Installation angle
The installation angle is the angle between the axis of the integrated valve and the horizontal plane. 5.4 Main parameters
) Working temperature: -40~+60℃,
b) Maximum working pressure: 3.0 MPa:
c) Opening pressure of safety valve: 2.5MPa+0.2MPa; d) Maximum filling volume: 80% of the cylinder volume. 6 Technical requirements
6.1 Material requirements
6. 1. 1 Metal materials
GB 18299—2001
iiKAoiKAca
The valve body material of the integrated valve is HPh59-1 lead brass, and its mechanical properties and chemical composition shall comply with the provisions of GB/T4423. If other metal materials are used, materials compatible with liquefied petroleum gas should be selected, and the comprehensive mechanical properties shall not be lower than those of the above materials. 6-1.2 Non-metallic materials
After the soaking test, the volume and quality changes of non-metallic materials shall meet the requirements of Table 1. After the aging test, no visible cracks or deterioration shall occur. For rubber materials, in addition to meeting the above requirements, they shall also meet the requirements for brittle temperature of Group A rubber materials in HG/T2579-1994.
轰1 Changes in volume and quality after soaking
Change forms
Volume expansion
Volume contraction
Mass loss
6.2 Requirements for air tightness of integrated valves
Maximum allowable percentage of changes in parts, %
6.2.1 Except for the one-way lubrication in the filling device, there should be no leakage under a pressure of 2.2 MPa. 6.2.2 The one-way valve in the filling device should have no leakage within the pressure range of 0. 05~~2.2 MPa. 6.3 Requirements for integrated valve body and various functional devices 6.3.1 Integrated valve body
6.3-1.1 Should be forged.
6.3.1.2 Should be able to withstand a pressure of 5.0 MPa without permanent deformation or other forms of damage. 6.3.2 Filling device
6.3.2.1 Should be able to withstand a pressure of 5.0 MPa without permanent deformation or other forms of damage. 6.3.2.2 Two one-way valves may be installed, at least one of which is airtight; or one airtight one-way valve and one stop valve may be installed, at least one of which should be built-in.
6. 3.2.3 The airtight check valve should not leak within the pressure range of 0.05~4.5 MPa. 6.3-2.4 If the filling device is directly connected to the external filling equipment during filling without connecting to the gas filling pipeline, the filling device should be equipped with a dust cover to prevent foreign matter from entering.
6.3.2.5 It should withstand 6000 working cycles without deformation or other forms of damage, and should comply with the provisions of 6.3.2.3. 6.3.3 80% filling limit device
6.3.3.1 When the amount of liquefied petroleum gas filled in the cylinder reaches 70%~-80% of the total volume of the cylinder, it should be able to automatically implement the closing action. 6.3.3.2 When in the closed position, when the pressure difference at both ends is 0.7 MPa, the filling speed should not exceed 500 mL/min. 6.3.3.3 When the pressure difference between the cylinder and the filling device is any value within the range of 0.07~1.0 MPa, the device should be able to operate normally. 6.3.3.4 In the closed position, it should be able to withstand a pressure of 5.0 MPa without permanent deformation or other forms of damage. 6.3.3.5 If there is a float in the 80% filling limit device, the float should be able to withstand at least 5.0 MPa of water pressure without permanent deformation, and for hollow floats, no water should be infiltrated, and for solid floats, the mass of water infiltrated should not exceed 2% of the original mass of the float. 6.3.3.6 It should withstand 6,000 working cycles without deformation or other forms of damage, and meet the requirements of 6.3.3.1~6.3.3.3.
6.3.3.7 After the vibration test, the device shall have no mechanical failure and comply with the provisions of 6.3.3.1~6.3.3.3. 6.3.4 Safety valve
6.3.4.1 The opening pressure deviation shall be within ±5% of the set pressure, and the return pressure shall not be less than 80% of the opening pressure. 6.3.4.2 It shall be installed in the gas phase space of the cylinder. 6.3.4.3 There shall be no leakage at a pressure of 2.2 MPa. 6-3.4.4 It shall not be adjustable externally. 6.3.4.5 The discharge capacity shall be able to meet the requirements of the fire test\ in Appendix A of GB17259·1998. 6.3.5 Flow limiting valve
6.3.5.1 It shall be built-in.
GB 18299—20D1
6.3.5.2 It should be able to withstand a pressure of 5.0MPa without permanent deformation or other forms of damage. 6.3.5.3 When the pressure difference at both ends of the flow limiting valve exceeds 0.1MPa, the flow limiting valve should automatically close. After closing, the leakage flow of liquefied petroleum gas should not exceed 1000mL/min under a pressure difference of 0.1MPa. 6.3.5.4 When the cause of the closure of the flow limiting valve is eliminated, the flow limiting valve should automatically open. 6.3.5.5 It should withstand 6000 working cycles without deformation or other forms of damage, and meet the requirements of 6.3.5.3. 6.3.6 Liquid level display device
6-3.6.1 The structure of indirect liquid level display (such as electromagnetic induction type) should be adopted. 6.3.6.2 If the component of the device that generates the signal source is equipped with a float, the float should meet the requirements of 6.3.3.5. 6.3.6.3 The device shall have an instrument to indicate the liquid level of the liquefied petroleum gas in the cylinder. On the dial, there shall be a limit filling scale, which is marked as F, and the area exceeding the limit filling scale is indicated in red. The pointer of the instrument shall swing flexibly. When the pointer points to point F, the amount of liquefied petroleum gas in the cylinder shall be within the range of 70% to 80% of the permanent volume of the cylinder. 6.3.6.4 The output terminal of the liquid level display signal shall be insulated from the integrated valve body. 6.3.6.5 It shall withstand 100,000 working cycles without deformation or other forms of damage, and shall comply with the provisions of 6.3.6.3. 6.3.6.6 After the vibration test, the device shall have no mechanical failure and comply with the provisions of 6.3.3.1 to 6.3.3.3. 6.3.7 Cut-off
6.3.7.1 It shall be able to withstand a pressure of 5.0MPa without permanent deformation or other forms of damage. 6.3.7.2 There should be no leakage under the air pressure of 4.5 MPa 6.3-7.3 If the stop valve is driven by electricity, when the current is cut off, the stop valve should be in the closed position. Its circuit system should be insulated from the valve body.
6.3.7.4 It should be able to withstand 6000 opening-closing cycles without deformation or other forms of damage, and meet the requirements of 6.3.7.2 6.4 Appearance
The surface of the integrated valve body and all parts of each functional device should not have cracks, wrinkles, inclusions, incomplete filling or obvious mechanical damage, etc., which may damage the performance of the integrated valve and hinder the identification of the mark. 7 Test method
7.1 Basic requirements for test conditions
7.1.1 The pressure gauge accuracy level of the instruments used in this standard shall not be lower than level 1.5; the flow meter accuracy level shall not be lower than level 0.5, and the range shall be 1.5 to 2 times the test parameter required. 7.1.2 For leakage test, use air or nitrogen as the medium, and for hydrostatic strength test, use water as the medium. 7.2 Immersion test
Keep the ambient temperature constant within the range of 23℃±2℃, place the test piece in a wide-mouth bottle of appropriate size, pour in n-hexane, cover the bottle cap with the sample, soak for 72 hours, take out and detect the change in its volume and mass. 7.3 Aging or testing
The aging test piece is placed in an aging test device, the air in the device is removed, and oxygen is filled to reach an appropriate pressure. Then, the device is placed in a constant temperature box at 75℃±5℃, and kept warm for a certain period of time so that the temperature inside and outside the device reaches 70℃±5℃. At this time, adjust the temperature in the thermostat to 70℃±2℃, detect the pressure in the device, and require that its value is not less than 2.1MPa. Under the two conditions of ensuring that the temperature in the aging test device is 70℃±5℃ and its internal pressure is not less than 2.1MPa, keep it warm for 96 hours and then take it out to visually check its changes. 7.4 Static hydraulic strength test
Effectively seal the air outlet of the integrated valve and the air outlet of the safety valve and install them on the static pressure strength test device. Add water and pressurize it from the joint of the test device to make its internal pressure reach 5.0MPa. Open and close the stop valve respectively, and keep the pressure for 1min each time. Check the changes in the appearance of the integrated valve body and each functional device.
7.5 Static pressure leakage test
GB182992001
iiKAoNiKAca-
Remove the 80% filling limit device and the subassembly of the position display device, first weigh the quality and mark it After recording, install it in the float static pressure test device; remove the air in the device, fill the device with water, pressurize it to 5MPa, and maintain the pressure for no less than 60min: take out the inspection sleeve, weigh the mass, and the reading accuracy of the weighing equipment should be no more than 0.01B.7.6 Durability test
Put the integrated device on the corresponding durability test device for durability tests. The stroke of each durability test cycle should be no less than 80% of the actual working stroke. The number of cycles is shown in Table 2. After the test, check the deformation or damage of the parts of each device, and after the durability test, carry out relevant tests according to 7.7, 7.8, 7.9 and 7.10 respectively. Table 2 Durability test cycle number
Part name
Filling device
Stop valve
Limiting flow
On-position display of filling amount
80% filling limit device
7.7 Leakage test
Number of cycles
100000
7.7.7 After the air outlet of the integrated valve and the exhaust port of the safety valve are effectively sealed, install them on the leakage test device, and fill the compressed air from the joint of the test device with the pressure ranging from 0 to 4.5MPa: open and close the stop valve on the integrated valve, and maintain the pressure for 1min each time. Use soapy water to check the surface of the integrated valve body and all joints and exposed parts of each functional device (except the external interface of the filling device and the exhaust port of the safety valve) for leakage.
7.7.2 Add gas and pressurize according to the method of 7.7.1, from 0.05~4.5MPa, and use soapy water to check the leakage of the external interface of the filling device. 7.8 Air tightness test
7.8.1 Use the water method to test, install the whole set of integrated valves on the air tightness test device, and pass water through the integrated valve; pass compressed gas from 0~2.2MPa, and observe whether there are bubbles (except for the external interface of the filling device). 7.8-2 Use the method of 7.8.1 to check whether there are bubbles at the external interface of the filling device from 0.05~2.2MPa. 7.980% filling limit device and liquid level display device working test 7.9.1 Filling limit performance and liquid level display performance test 7.9.1.1 Use water as the medium, and determine the water level height range corresponding to the 70%~80% liquid level of liquefied petroleum gas according to the inner diameter of the steel cylinder corresponding to the device.
7.9.1.2. Connect pressure gauges at both ends of the filling device and the 80% filling limit device, fill the 80% filling limit device with pressurized water from the filling device, and properly adjust the pressure of the water inlet so that the pressure difference between the two pressure gauges reaches 0.07 MPa and 1.0 MPa respectively. Under these two pressure conditions, make the water level reach the water level height range specified in 7.9.1.1, observe whether the filling limit action occurs, and at the same time observe whether the pointer of the liquid level display device points to point F when the filling limit action occurs.
7.9.1.3 Adjust the pressure difference in 7.9.1.2 to 0.7MPa, and raise the float to the limit filling action. At this time, measure the flow rate of water filled into the device.
7.9.2 Limit filling action and liquid level display action test 7.9.2.1 Compressed air is used as the medium. The air source pressure range is 0.5~0.8MPa. The water level height range specified in 7.9.1.1 is used. 7.9.2.2 Fill the 80% limit filling device with compressed air, and at the same time, lift the float to the limit filling height range. Observe whether the limit filling action occurs. At the same time, observe whether the pointer of the liquid level display device points to point F when the limit filling action occurs. 7. 10 Limiting valve working test
7.10.1 Limiting performance test
7.10.1.1 Use water as the medium.
GB 1B299-2001
7.10.1.2 Connect the sample to the outlet of the flow meter, and connect a pressure gauge with a range of 0 to 0.4 MPa between the flow meter and the sample and at the outer end of the sample to indicate the pressure difference when closed. 7.10.1.3 During the test, slowly increase the water flow and water pressure until the flow limiting valve closes automatically. At the moment the flow limiting valve closes, record the pressure difference on both sides of the sample, and read the closed flow from the flow meter. 7.10.1.4 After the flow limiting valve closes automatically, close the stop valve and then slowly open the stop valve again to observe whether the water can flow out normally. 7.10.1.5 Other flow detection equipment can also be used for inspection. 7.10.2 Flow limiting action test
7.10-.2.1 Use compressed air as the medium.
7.10.2.2 Pass 0.6 MPa compressed air into the air inlet of the flow limiting valve to observe whether there is flow limiting action. If there is, close the stop valve and then slowly open it again to observe whether there is normal air flow. 7.11 Vibration test
7.11.1 The instrument used to measure and record the vibration acceleration or amplitude and frequency shall have an accuracy of at least 10% of the measured value.7.11.2 The test shall be carried out along the three orthogonal axes of the object under test. This test is used to examine the vibration resistance of the 80% limit filling device and the liquid level display device. The test may be carried out in accordance with either method A or method B below. 7.11.3 Method A
7.11.3.1 Resonance check
The resonant frequency of the 80% limit filling device and the liquid level display device is determined by slowly changing the applied vibration frequency by reducing the test amplitude throughout the specified frequency band, but the test amplitude should be sufficient to produce excitation. The sinusoidal resonance check can be completed using the test amplitude and cycle time specified for the cyclic test. The resonance check time provided is included in the cyclic test required by 7.11.3.3. 7.11.3.2 Static resonance test
The test item shall be vibrated along each axis for 30 minutes at each of the strongest resonant frequencies determined in 7.11.3.1. The test speed shall be 1.5g (14-7 m/s\). If more than four resonant frequencies appear in a certain axis, the four strongest resonant frequencies shall be selected. During the test, if the resonant frequency changes, the time of change shall be recorded and the vibration rate shall be immediately adjusted to maintain the peak resonance state. The final resonant frequency shall be recorded. The total static time shall be included in the cycle time required by 7.11.3.3. 7.11.3.3 Sine frequency sweep test
a) The test item shall be subjected to sinusoidal vibration for 3 h in three mutually perpendicular axes according to the following parameters: b) Acceleration: 1. 5g (14.7 m/s*)
c) Frequency range: 5~200 Hz;
d) Frequency sweep time: 12 min;
e) The frequency of the applied vibration shall be swept over the specified range in logarithmic form; f) The specified frequency sweep time is the sum of the time required for a frequency sweep from low to high and a frequency sweep from high to low. 7.11.4 Method B
7.11.4.1 The test shall be carried out on a sinusoidal vibration table with a constant acceleration of 1.5g and a frequency range of 5~200 Hz. The test shall last for 5 h in each of the three orthogonal axes. The frequency band of 5~200 Hz shall be included in two 15-min frequency sweep times. 7.11.4.2 If the test is not conducted on a constant acceleration test bench, the frequency band of 5 to 200 Hz must be divided into 11 half-frequency bands, each of which includes a constant amplitude. Therefore, the theoretical acceleration is included in the range of 1 to 2 g (g-9.Bm/s\). The amplitude values of each frequency band are shown in Table 3.
Table 3 Amplitude values of each frequency band
Amplitude, mm
(peak value)
Frequency, Hz
(acceleration 1g)
Frequency, Hz
(acceleration 2g)
Amplitude.mm
(peak value)
GB 18299—2001
Table 3 (end)
Frequency, Hz
(acceleration 1g)
Each frequency band is carried out in two directions and takes 2 min to complete. The total time for each frequency band is 30 min. 7.12 Working test of safety valve
7.12.1 Opening pressure and re-seating pressure test of safety valveiiiKAoNhiKAca-
Frequency, Hz
(Acceleration 2g)
Install the safety valve on the safety valve opening and re-seating pressure test device. First adjust the air pressure so that the safety valve opens and re-seates continuously for 3 seconds. Do not record the pressure value. Then enter the formal test, slowly pass compressed air, and check with flooding method or soapy water. When bubbles begin to emerge from the exhaust port of the safety valve, record the pressure in the device. Then gradually increase the internal pressure of the device to increase the discharge volume to a level that no bubbles can be generated; then slowly close the compressed air, and when bubbles cannot be formed, record the internal pressure of the device. Repeat the test 3 times, and take the arithmetic average of the 3 times as the final test result.
7.12.2 Safety valve discharge capacity test
This test is carried out in accordance with A2.2 of Appendix A of GB17259-1998. 7.13 Appearance inspection
Appearance inspection shall be conducted by visual inspection to check the appearance of all parts of the integrated valve body and each functional device. 8 Inspection rules
8.1 Materials and parts entering the factory shall have a quality certificate or quality guarantee. The valve body materials shall be re-inspected and the parts entering the factory shall be spot-checked.
8-2 Factory inspection
Factory inspection shall be conducted on each part and the inspection items shall be as specified in Table 4. 8.3 Type test and sampling
8.3.1 In any of the following cases, the integrated valve shall be subjected to type test, and the test results shall comply with the relevant provisions of this standard: a) when there are major changes in design, process, materials, etc. b) when production is stopped for more than half a year, c) when production is resumed after one year of continuous production,
d) before new products leave the factory:
e) the inspection items shall be as specified in Table 4:
8.3-2.1 For type test, the samples shall be sampled from the products that have been recently produced and passed the factory inspection. The sampling quantity is shown in Table 4. 8.3.2.2 For immersion test and aging test, a full set of non-metallic parts can be removed from the intact samples that have completed other test items as samples.
8.3.2.3 For static pressure strength test, sampling shall be carried out in accordance with 8.3.2.1. GB 18299—2001
8.3.2.4 Static pressure leakage test Before the immersion test and aging test, the samples that have completed the following tests (except the safety and discharge capacity test) can be taken, and the floats that have not been damaged by the tests can be removed from them. 8-3-2. 5 Durability test Take the samples that have passed the static pressure strength test. 8.3.2.6 Leakage test Take the samples that have passed the durability test. 8. 3.2.7
Air tightness test Take the samples that have passed the temperature leakage test. 8.3.2.8 Limit filling performance and liquid level display performance test Take the samples that have passed the vibration test. Limit filling action and liquid level display action test Take the samples that have passed the vibration test. 8. 3.2. 9
8.3.2.10 Limiting flow performance test Take the samples that have passed the durability test. 8.3.2.11
8.3-2.12
For the flow limiting action test, take the sample that has passed the durability test. For the vibration test, take the sample that has passed the air tightness test. 8.3.2.13
The sampling for the safety valve opening pressure and return seat pressure test may not be affected by the above tests. 8.3.2.14 For the safety valve discharge force test, follow the test in 8.3.2.1 Separate sampling. For appearance inspection, sampling can be taken between the above tests (except the safety valve discharge capacity test). B. 3. 2. 15
8.4 Judgment rules
8.4.1 Factory inspection
If all performance items of factory inspection are qualified, the appearance is qualified or there are slight defects, the product is judged to be qualified, otherwise the product is unqualified. If the unqualified items are repairable and adjustable, one repair or adjustment is allowed, and the product is submitted for inspection again after the repair or adjustment. 8.4.2 Type test
If all performance items of type test are qualified, the appearance is qualified or there are slight defects, the product represented by the product is judged to have passed the type test, otherwise it is unqualified. If the unqualified items are adjustable, one adjustment is allowed, and the product is submitted for test again after the adjustment. Table 4 Inspection rules
Inspection items
Immersion test
Aging test
Static pressure strength test
Static pressure tightness test
Durability test
Seal test
Air tightness test
Filling performance and liquid level display
Performance test
Filling action and liquid level display
Action test
Limiting flow performance test
Limiting flow action test
Vibration test
Safety valve opening pressure and
Return seat pressure test
Safety valve discharge capacity test
Appearance inspection
Inspection method
Judgment basis
6.3.1.2, 6.3.2.1, 6.3.3.4, 6. 3. 5. 2.6. 3. 7. 1
6. 3. 5. 2,6. 3. 6. 2
6.3.2.5, 6.3.3.6, 6.3.5.5,
6. 3. 6. 5, 6. 3. 7. 4
6. 3. 2. 3.6. 3. 7. 2
6. 3. 3. 1~ 6. 3. 3. 3, 6. 3. 6. 36. 3. 3. 1,6. 3. 6. 3
6. 3. 5. 3,6. 3. 5. 4
6. 3. 6. 3. 6. 3. 5. 4
6. 3. 3. 7,6. 3. 6. 6
6. 3. 4. 1
6. 3. 4- 5
Factory inspection
Type inspection
Inspection quality
9 Marking, packaging, transportation and storage of integrated valves 9.1 MarkingWww.bzxZ.net
GB 18299—2001
The following clear and recognizable permanent markings shall be on the integrated valve: a) Model of integrated valve:
b) Set pressure of safety valve!
c) Safety position and mark;
d) Year and month of production or batch number
e) Enterprise logo.
9.2 Packaging
a) Before packaging, the water remaining in the integrated valve should be removed; 6) When packaging, keep the integrated valve clean and the inlet and outlet threads undamaged: c) The packaging box should contain the product certificate, packing list and instructions. 9.2.1 The packaging box should have the following marks:
a) Manufacturer's name;
b) Name and model of the integrated valve:
c) Necessary operation requirement symbols
d) Quantity and gross weight;
e) Volume dimensions (length × width × height).
9.2.2 The product certificate should indicate the following: a) Name and model of the integrated valve:
b) Seal of the quality management department;
) Inspection date.
9.2.3 The packing list shall indicate the following:
a) manufacturer name, product model,
b) quantity list of each accessory in the box;
c) signature of the inspection department and the inspection date.
9.3 Transportation
Transportation should be handled with care to prevent heavy pressure and collision. 9.4 Storage
The integrated valve should be stored in a ventilated, dry and clean room. 10 Instructions for use
Appropriate installation, maintenance and operation instructions should be provided. The instructions shall be written in accordance with GB9969.1, and the following shall be particularly stated: a) Functional introduction of the integrated valve:
b) Installation location;
c) Inspection after installation, gas resistance, filling limit, flow limit, etc. shall be particularly stated 1d) Fault identification and troubleshooting methods during use. -iiKAoNiKAca-
As shown in Figure A1.
GB 18299—2001
Attachment A
(Appendix of suggestion)
Possible structural forms of integrated valve
1—Filling device, 2—Integrated body 13—Safety valve; 4—Liquid level display filling amount, 5—Stop valve; 6—Air outlet joint 17—Limiting flow room 18—Float; 9—B0% filling amount limit Figure A1Possible structural forms of integrated valve3 The packing list should indicate the following:
a) manufacturer name, product model,
b) quantity list of each accessory in the box;
c) inspection department signature and inspection date.
9.3 Transportation
Transportation should be handled with care to prevent heavy pressure and collision. 9.4 Storage
Integrated valves should be stored in a ventilated, dry and clean room. 10 Instructions for use
Appropriate installation, maintenance and operation instructions should be provided. The instructions are written in accordance with GB9969.1, and the following should be explained in particular: a) Functional introduction of integrated valves:
b) Installation location;
c) Inspection after installation, gas resistance, filling limit, flow limit, etc. should be explained in particular 1d) Fault identification and troubleshooting methods during use. -iiKAoNiKAca-
As shown in Figure A1.
GB 18299—2001
Attachment A
(Appendix of suggestion)
Possible structural forms of integrated valve
1—Filling device, 2—Integrated body 13—Safety valve; 4—Liquid level display filling amount, 5—Stop valve; 6—Air outlet joint 17—Limiting flow room 18—Float; 9—B0% filling amount limit Figure A1Possible structural forms of integrated valve3 The packing list should indicate the following:
a) manufacturer name, product model,
b) quantity list of each accessory in the box;
c) inspection department signature and inspection date.
9.3 Transportation
Transportation should be handled with care to prevent heavy pressure and collision. 9.4 Storage
Integrated valves should be stored in a ventilated, dry and clean room. 10 Instructions for use
Appropriate installation, maintenance and operation instructions should be provided. The instructions are written in accordance with GB9969.1, and the following should be explained in particular: a) Functional introduction of integrated valves:
b) Installation location;
c) Inspection after installation, gas resistance, filling limit, flow limit, etc. should be explained in particular 1d) Fault identification and troubleshooting methods during use. -iiKAoNiKAca-
As shown in Figure A1.
GB 18299—2001
Attachment A
(Appendix of suggestion)
Possible structural forms of integrated valve
1—Filling device, 2—Integrated body 13—Safety valve; 4—Liquid level display filling amount, 5—Stop valve; 6—Air outlet joint 17—Limiting flow room 18—Float; 9—B0% filling amount limit Figure A1Possible structural forms of integrated valve
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