This standard specifies the dimensions and relevant data of the mounting surface of plate-type hydraulic relief valves (including relief valves, remote pressure regulating valves and unloading relief valves) to ensure their interchangeability. This standard is applicable to the installation of plate-type hydraulic relief valves that are currently widely used. GB/T 8101-2002 Hydraulic relief valve mounting surface GB/T8101-2002 Standard download decompression password: www.bzxz.net

ICS 23.100.50
National Standard of the People's Republic of China
GB/T 8101-2002
Replaces GB/T 8101—1987
Hydraulic relief valves
Mounting surfaces
Hydraulic fluid power--Pressure-relief valvesMounting surfaces
(ISO 6264:1998,MOD)
Published on 2002-05-17
People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
Implemented on 2002-12-01
GB/T 8101-2002 "Installation surface of relief valve" is a revision of the national standard "GB/T8101-1987 Plate-connected hydraulic relief valve installation surface" which is based on the international standard ISO6264:1998 "Hydraulic transmission GB/T8101-1987 Plate-connected hydraulic relief valve installation surface". Compared with ISO6264:1998, this standard has the following differences: According to the current standards in my country, this standard adds GB/T8099-1987 "Hydraulic stack valve installation surface" in chapter "2 Normative references", and deletes ISO4401:1994 "Hydraulic transmission four-port directional control valve installation surface"; considering the needs of remote pressure regulating valves and unloading relief valves designed by domestic manufacturers and currently produced and used, the installation surface of remote pressure regulating valves with a maximum main oil port diameter of 6.3mm and the installation surface of unloading relief valves with a maximum main oil port diameter of 14.7mm, 23.4mm, and 32mm are added; Appendix A "Example of installation surface code rules" is added to help understand the text. When the international standard ISO6264:1998 is adopted to revise GB/T8101--1987, this standard and the revised standard have some changes in the following important technical contents: The installation surface code is in accordance with ISO5783: The original standard was written in accordance with ISO5783:1981. The original relief valve mounting surface dimensions of the main oil port maximum diameter of 4mm and 6.3mm were changed to the relief valve mounting surface dimensions of the main oil port maximum diameter of 4.5mm and 7.5mm.
Each main oil port maximum diameter is added with relief valve or pilot relief valve graphic symbols; a chapter "8 Superimposed valve" is added;
a chapter "9 Working pressure" is added;
This standard From the date of implementation, GB/T8101-1987 "Plate-type Hydraulic Overflow Valve Installation Surface" shall be abolished and replaced. Appendix A of this standard is an informative appendix.
This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Hydraulic and Pneumatic Standardization Technical Committee. The drafting unit of this standard: Beijing Machinery Industry Automation Research Institute. The main drafters of this standard: Liu Xinde and Zhao Manlin. This standard was first issued in July 1987.
GB/T 8101-2002
In hydraulic transmission systems, power is transmitted and controlled by pressurized fluid in the circuit. In these systems, hydraulic valves are typical components, and hydraulic valves can be used to control the flow direction, pressure or flow rate of the fluid in the circuit. 1 Scope
Hydraulic overflow valve
Installation surface
GB/T 8101—2002
This standard specifies the dimensions and relevant data of the mounting surface of plate-type hydraulic relief valves (including relief valves, remote pressure regulating valves and unloading relief valves) to ensure their interchangeability.
This standard applies to the installation of plate-type hydraulic relief valves that are currently widely used. 2 Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. GB/T131 Surface roughness symbols, codes and annotation methods in mechanical drawings (eqvISO1302) GB/T786.1 Hydraulic and pneumatic graphic symbols (eqvISO1219-1) GB/T1031 Surface roughness parameters and their values ​​(eqvISO468) GB/T1182 General rules, definitions, symbols and drawing representations of shape and position tolerances (eqvISO1101) GB/T8099 Hydraulic stacking valve mounting surface
GB/T17446 Fluid transmission systems and components
Terms (idtISO5598)
ISO5783 Identification codes for hydraulic transmission valve mounting surfaces and cartridge valve holes 3 Definitions
The terms and definitions established in GB/T17446 apply to this standard. 4 Symbols
4.1 This standard adopts the following symbols:
a) A, B, L, P, T and X represent oil ports; b) F1, F2, F3, F4, F and F. represent screw holes for fixing screws; c) G represents locating pin holes;
d) D represents the diameter of fixing screws;
e) rmax represents the radius of the fillet of the mounting surface.
4.2 The graphic symbols used in this standard conform to GB/T786.1. 4.3 This standard adopts the code rules specified in ISO5783, and examples of mounting surface codes are given in Appendix A. 5 Tolerances
5.1 The following tolerances shall be applied to the mounting surface (the area within the thick dotted line): Surface roughness: Ra ≤ 0.8 μm (see GB/T1031 and GB/T131); Surface flatness: 0.01 mm within a distance of 100 mm (see GB/T1182); Dowel hole diameter tolerance: H12.
5.2 From the origin of the coordinate system, the following tolerances shall be applied to the linear dimensions along the axis and the axis: GB/T 8101—2002
----Pin hole ± 0.1 mm;
Screw hole: ± o.1 mm
Oil port hole: ± 0.2 mm.
For other dimensional tolerances, see the figure.
5.3For the contents of mechanical design and drawing involved in this standard, see the references. 6 Dimensions
6.1 The mounting surface dimensions of the relief valve shall be selected from the drawings specified in 6.2 to 6.6. The mounting surface dimensions of the remote pressure regulating valve shall be selected from the drawings specified in 6.7. The mounting surface dimensions of the unloading relief valve shall be selected from the drawings specified in 6.8 to 6.10. 6.2 The mounting surface dimensions of the relief valve with a maximum oil port diameter of 4.5 mm for the main oil port (code: GB/T8101-02-01-*一2002) are given in Figure 1.
6.3 The mounting surface dimensions of the relief valve with a maximum oil port diameter of 7.5 mm for the main oil port (code: GB/T8101-03-04-*一2002) are given in Figure 4.
6.4 The installation surface dimensions of the overflow valve with a maximum oil port diameter of 14.7 mm for the main oil port (code: GB/T8101-06-09-*一-2002) are given in Figure 9.
6.5 The installation surface dimensions of the overflow valve with a maximum oil port diameter of 23.4 mm for the main oil port (code: GB/T8101-08-13-*一-2002) are given in Figure 13.
6.6 The installation surface dimensions of the overflow valve with a maximum oil port diameter of 32 mm for the main oil port (code: GB/T8101-10-17-*一-2002) are given in Figure 17.
6.7 The installation surface dimensions of the remote pressure regulating valve with a maximum oil port diameter of 6.3 mm for the main oil port (code: GB/T8101-02-19-0一-2002) are given in Figure 19.
6.8 The mounting surface dimensions of the unloading relief valve with a maximum oil port diameter of 14.7 mm (code: GB/T8101-06-21-0--2002) are given in Figure 21.
6.9 The mounting surface dimensions of the unloading relief valve with a maximum oil port diameter of 23.4 mm (code: GB/T8101-08-23-0--2002) are given in Figure 23.
6.10 The mounting surface dimensions of the unloading relief valve with a maximum oil port diameter of 32 mm (code: GB/T8101-10-25-0—2002) are given in Figure 25.
Note 1: See Appendix A for the arrangement of mounting surface codes. Note 2: Figures 7, 8, 11, 12, 15 and 16 respectively show the installation surface dimensions and port symbols of the relief valves to be eliminated. Do not use them in new designs. 7 Port marking
7.1 The port symbols of the relief valves shall be selected from the diagrams specified in 7.2 to 7.8. The port symbols of the remote pressure regulating valves shall be selected from the diagrams specified in 7.9. The port symbols of the unloading relief valves shall be selected from the diagrams specified in 7.10 to 7.12. 7.2 The maximum port diameter of the main port is 4.The symbol of the direct-acting relief valve with a maximum oil port diameter of 5 mm (code: GB/T8101-02-01-*一2002) is given in Figure 2.
7.3 The symbol of the pilot-operated relief valve with a maximum oil port diameter of 4.5 mm in the main oil port (code: GB/T8101-02-01-*一2002) is given in Figure 3.
7.4 The symbol of the direct-acting relief valve with a maximum oil port diameter of 7.5 mm in the main oil port (code: GB/T8101-03-04-*一2002) is given in Figure 5.
7.5 The symbol of the pilot-operated relief valve with a maximum oil port diameter of 7.5 mm in the main oil port (code: GB/T8101-03-04-*2002) is given in Figure 6.
GB/T8101—2002
7.6 The symbol of the pilot-operated relief valve with a maximum oil port diameter of 14.7 mm for the main oil port (code: GB/T8101-06-09-*-2002) is given in Figure 10.
7.7 The symbol of the pilot-operated relief valve with a maximum oil port diameter of 23.4 mm for the main oil port (code: GB/T8101-08-13-*2002) is given in Figure 14.
7.8 The symbol of the pilot-operated relief valve with a maximum oil port diameter of 32 mm for the main oil port (code: GB/T8101-10-17-*2002) is given in Figure 18.
7.9 The symbol of the remote pressure regulating valve with a maximum oil port diameter of 6.3mm for the main oil port (code: GB/T8101-02-19-0—2002) is given in Figure 20. www.bzxz.net
7.10 The symbol of the unloading relief valve with a maximum oil port diameter of 14.7mm for the main oil port (code: GB/T8101-06-21-0—2002) is given in Figure 22.
7.11 The symbol of the unloading relief valve with a maximum oil port diameter of 23.4mm for the main oil port (code: GB/T8101-08-23-0—-2002) is given in Figure 24.
7.12 The symbol of the unloading relief valve with a maximum oil port diameter of 32mm for the main oil port (code: GB/T8101-10-25-0-2002) is given in Figure 26.
8 Stacked valves
For stacked valves, the mounting surface and port markings specified in GB/T8099 shall be used. 9 Working pressure
For the indication of the maximum limit of working pressure, see Note 1 in Figures 1, 4, 9, 13, 17, 19, 21, 23 and 25. 10 Marking instructions (reference to this standard)
When deciding to comply with this standard, it is recommended that manufacturers use the following instructions in test reports, product samples and sales documents: "The dimensions of the mounting surface conform to GB/T8101-2002 "Mounting surface of hydraulic relief valve" (ISO6264: 1998, MOD)." 3
GB/T8101--2002
Code: GB/T8101-02-01-*—200240min2)
Note 1: The supplier shall specify the maximum working pressure of the base plate and the manifold. Note 2: Graphic symbols are shown in Figures 2 and 3.
Dimensions in mm
1) The minimum thread depth is 1.5 times the screw diameter D. In order to improve the interchangeability of the valve and reduce the length of the fixing screw, the recommended total thread depth is (2D + 6) mm. For mounting surfaces made of ferrous metal materials, the recommended screw-in length of the fixing screw is 1.25D mm. 2) The dimension determined by the area within the thick dotted line is the minimum dimension of the mounting surface. The right angles of the rectangle can be rounded, and the maximum fillet radius rmax is equal to the thread diameter of the fixing screw.
Along each coordinate axis, the distance from the center of the outermost holes (threaded holes or light holes) to the edge of the mounting surface is equal. 3) This dimension gives the minimum space required for a valve with such a mounting surface. This dimension is also the minimum distance between the center lines of two identical mounting surfaces on the same manifold.
Valve manufacturers should note that after assembly, no part of the entire valve body width direction shall exceed this dimension. 4) The blind hole on the mounting surface matches the positioning pin on the valve, and its minimum depth is 4mm. p
$4. 5 max
2, 25
Mounting surface of the relief valve with the maximum oil port diameter of 4.5 mm in the main oil port (Specification 02) F
Select according to ISO5783*
Valve type
Relief valve
Relief valve with bypass check valve
Select according to IS05783*
Valve type
Pilot-operated relief valve
Pilot-operated relief valve with bypass check valve
External oil drain
GB/T8101—2002
Internal oil drain
Figure 2 Symbol of the direct-acting relief valve with the maximum oil port diameter of 4.5 mm in the main oil port (Code: GB/T 8101-02-01-*--2002)External oil drain
1) Pilot oil port for remote control, can be plugged when not needed, LA
Figure 3 Symbol of pilot relief valve with maximum oil port diameter of 4.5mm for main oil port (code: GB/T 8101-02-01-*—2002)5
GB/T8101--2002
Code: GB/T 8101-03-04-*-200251min2)
Note 1: The supplier shall specify the maximum working pressure of the base plate and the manifold. Note 2: Graphic symbols are shown in Figures 5 and 6.
Dimension unit: mm
1) The minimum thread depth is 1.5 times the screw diameter D. In order to improve the interchangeability of the valve and reduce the length of the fixing screw, the recommended total thread depth is (2D+6) mm. For mounting surfaces made of ferrous metal, the recommended thread length of the fixing screw is 1.25Dmm. 2) The dimension determined by the area within the thick dotted line is the minimum dimension of the mounting surface. The right angles of the rectangle can be rounded, and the maximum fillet radius rmx is equal to the thread diameter of the fixing screw.
Along each coordinate axis, the distance from the center of each fixing threaded hole to the edge of the mounting surface is equal. 3) This dimension gives the minimum space required for a valve with such a mounting surface. This dimension is also the minimum distance between the center lines of two identical mounting surfaces on the same integrated block.
Valve manufacturers should note that after assembly, all parts of the entire valve body width direction shall not exceed this dimension. 4) The minimum depth of the blind hole on the mounting surface to cooperate with the locating pin on the valve is 4mm. P
g7. 5 max
7.5 max±7.5 max
$7. 5 max
Mounting surface for relief valve with maximum main port diameter of 7.5 mm (size 03) 6
Select according to ISO5783*
Valve type
Cleaning valve
Relief valve with bypass check valve
Select according to ISO5783*
Valve type
Pilot-operated relief valve
With bypass Check valve
Pilot-operated relief valve
External oil leakage
GB/T8101—-2002
Internal oil leakage
Figure 5 Symbol of direct-acting relief valve with a maximum oil port diameter of 7.5mm for the main oil port (code: GB/T8101-03-04-*--2002)External oil leakage
1) Pilot oil port for remote control, which can be blocked when not needed. Figure 6 Symbol of pilot-operated relief valve with a maximum oil port diameter of 7.5mm for the main oil port (code: GB/T8101-03-04-*—2002)GB/T 8101—2002
Code: GB/T8101-06-07-*2002
Notice: This mounting surface will be eliminated. It will be removed when this standard is revised again. Do not use for new designs. 61min2
Note 1: The supplier shall specify the maximum working pressure of the base plate and the manifold. Note 2: See Figure 8 for graphic symbols.
Dimensions in mm
1) The minimum thread depth is 1.5 times the screw diameter D. To improve the interchangeability of the valve and reduce the length of the fixing screws, the recommended total thread depth is (2D+6) mm. For the installation surface of ferrous metal materials, the recommended fixing screw thread length is 1.25Dmm. 2) The dimension determined by the area within the thick dotted line is the minimum dimension of the mounting surface. The right angles of the rectangle can be rounded, and the maximum fillet radius rmx is equal to the thread diameter of the fixing screw.
Along each coordinate axis, the distance from the center of each fixing threaded hole to the edge of the mounting surface is equal. 3) This dimension gives the minimum space required for a valve with such a mounting surface. This dimension is also the minimum distance between the center lines of two identical mounting surfaces on the same integrated block.
Valve manufacturers should note that after assembly, all parts of the entire valve body width direction shall not exceed this dimension. 4) The minimum depth of the blind hole on the mounting surface to match the locating pin on the valve is 4mm. Shaft
$14. 7 max914. 7 max
Main port maximum oil port diameter is 14.7mm relief valve installation surface (specification 06) F,
Select according to ISO5783*
Valve type
Relief valve
Relief valve with bypass check valve
1) Pilot oil port for remote control, can be blocked when not needed. 0
External oil drain
GB/T8101—2002
Internal oil drain
Figure 8 Symbol of pilot relief valve with a main port maximum oil port diameter of 14.7mm (code: GB/T8101-06-07-*—2002)
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