JB/T 8650.2-1997 This standard specifies the basic parameters and installation dimensions, marking, technical requirements, test methods, acceptance rules, packaging, transportation and storage of internal thread cone valves. This standard is applicable to machine tool cooling systems with a nominal pressure of 0.5MPa. Other mechanical cooling systems can also refer to it. JB/T 8650.2-1997 Machine tool cooling system components Internal thread cone valve JB/T8650.2-1997 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T8650.21997
Machine Tool Cooling System Components
Internal Thread Cone Valve
199-08-18 Issued
Ministry of Machinery Industry of the People's Republic of China
1998-01-(1 Implementation
J/T8650.2-1 No. 97
This standard is proposed by the National Technical Committee for Standardization of Machinery Industry. This standard is under the jurisdiction of the Beijing Machine Tool Research Institute of the Ministry of Machinery Industry. The drafting units of this standard are the Beijing Machine Tool Research Institute of the Ministry of Machinery Industry, Xinjiang Pressing Parts Factory, Beijing No. 1 Machine Tool Factory, and Beijing No. 2 Machine Tool Factory. Scope
Machine Industry Standard of the People's Republic of China
Machine Tool Cooling System Components
Internal Thread Cone Valve
JR/T 8650.2--1997
This new standard is the basic parameters and installation dimensions, markings, technical requirements, test methods, acceptance rules and installation, operation and other aspects of the wide range of valves.
This standard is applicable to the refrigeration system with a bed pressure of 10000 C and 50000 MPa. It can also be used as a reference for the refrigeration system of other countries. 2 Reference standardswwW.bzxz.Net
The following standards contain relevant provisions. The following provisions are used as the reference for this standard: This standard is valid for the date of this standard. The period shown in the standard is valid. All standards will be modified. The latest version of the following standards may be used when exploring the information of this standard. GBBIH-
(197—81
GB707?
BT13927-$1
ZR J5r 13.88
3 Basic parameters and installation dimensions
Should be installed and transported with diagrams and signs
Information channel screws are loaded with male and female matching (diameter 1~55um) glands are sealed with provincial control
General valve size force test
Metallic piece machine tool deactivation degree determination
Set of technical parameters and installation dimensions See Figure 1, Figure 2 and Table 1 for the marking of the number of tubes. A Four
Approved by the Ministry of Machinery Industry on August 18, 1997
Implemented on January 1, 1998
G1KM22
JB/T 8650.2-1997
Nominal pressure value: CM
Format: Internal
Product code: Internal
4.2 Marking example
JB/TB650.2—1997
Nominal force is 1.5MPa, the marking example of the internal period is NZ1-C.JBT 850.-13
Nominal pressure is 0.5MP: internal thread standard core combustion thread careful marking image 0-
5 Technical requirements
S.1 South screw effect correction two valve body mark a flashing clock face, especially by letting the outlet, heart contact good group, its help is not focused on work: 70 Xing:
5.2 Almost put the wheel inflammation, consultation,
5.3 Non-agricultural surface polishing or sandblasting, or other surface treatment 5.4 relatively large tolerance connection GF T97, internal thread according to 5H: external end thread connection h control: 5.5 mark in a conspicuous place.
5.6 Internal steam: The cleanliness of the product shall be determined in accordance with the requirements of ZE153 003 (6 test methods
The original force test will meet the requirements of (B13927) acceptance rules
7.1 Before the product is shipped, the product number shall be inspected every 1C05 inspection. .2 The internal screw shall be inspected and accepted by the quality assurance department. The product can be shipped. .8 Packaging, transportation and storage
8.! The product has protective measures inside and outside and is temporarily reinstalled. The product shall be abandoned and sent to the factory under the conditions of technical management. The factory shall not be seated for one year from the date of the delivery.
8.2 The quality of the product supplied by the company shall be controlled nearly
8.3 The product packaging meets the requirements of GB19: .! The product should be stored in a place with no explosion, wind, moisture and no air body.
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