GB/T 8100-1987 Plate-connected hydraulic pressure control valves (excluding relief valves), sequence valves, unloading valves, throttle valves and non-return valves. Installation surface GB/T8100-1987 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Hydraullc fluid power-Pressure cantrol valves (excluding pressure relief valves), sequence valves, unloading valves, throttle valves and check valves Mounting surfaces Scope of application
URC 621.646
：621.753
GB 8100—
This standard applies to the mounting surfaces of plate-type hydraulic pressure control valves (excluding relief valves), sequence valves, unloading valves, throttle valves and check valves.
2 Reference standards
GB 1031 Surface roughness parameters and their values ​​GB1182~1184 Shape and position tolerances
G1801 Tolerances and fits Dimensions up to 500mm Tolerance zones and fits for holes and shafts 3 Symbols
The following letters and symbols are used in this standard:
The letters ABX and Y are symbols for oil ports.
The letters F, F, FF, F. are symbols for fixing screw holes. The letter G is the derivative symbol for locating pin holes. bZxz.net
d, letter D is the symbol for the diameter of the fixing screw. e.
4 Tolerances
The letter K is the symbol for the radius of the fillet of the mounting surface.
4.1 The mounting surface, i.e. the area within the thick dotted line, adopts the following values: Surface roughness: R. Not more than μm;
Surface flatness: 0.01mm per 100mm; b
Location pin hole diameter tolerance: H12.
4.2 Starting from the origin of coordinates, the tolerance of the hole position size along the y-axis is as follows: a
Location pin hole: ±0.1mm;
Threaded hole: ±0.1mm,
Oil port: ±0.2mm and above
5 Mounting surface number and size
i: Mounting surface of pressure control valves, sequence valves, unloading valves, throttle valves and check valves with a maximum oil port diameter of 4mm (oil port size No.: 02, approved by the State Machinery Industry Commission on July 13, 1987 and implemented on July 1, 1988):
GB 8100-87
a. Mounting surface number: GB8100-AA-02-1-B: h. Dimensions: See Figure 1 and Table 1.
5.2 Mounting surface of pressure control valve, sequence valve, unloading valve, throttle valve and non-return valve with a maximum main oil port diameter of 6.3mm (oil port size code: 032:
a. Mounting surface number: GB8100-AB-03-4-B, b. Dimensions: See Figure 2 and Table 2.
5.3 Mounting surface of pressure control valve, sequence valve, unloading valve, throttle valve and non-return valve with a maximum main oil port diameter of 14.7mm (oil port size code: 06):
Mounting surface number: GB8100-AG-06-2-A# Dimensions: See Figure 3 and Table 3.
5.4 Mounting surface of pressure control valve, sequence valve, unloading valve, throttle valve and non-return valve with a maximum main oil port diameter of 23.4mm (oil port size code: 08):
Mounting surface number: GB 8100-AH-08-2-A, b.
Dimensions: See Figure 4, Table 4.
5.5 Mounting surface of pressure control valve, sequence valve, unloading valve, throttle valve and check valve with a maximum oil port diameter of 32mm (oil port size code: 10):
Mounting surface number: GB8100-A1-10-2-A, dimensions: See Figure 5, Table 5.
6 Other technical requirements
6.1 The minimum thread depth of the screw hole is 1.5D (D is the screw diameter). For the mounting surface of ferrous metal materials, the screw-in depth of the fixing screw hole is 1.25D. The total depth of the screw hole is 2D+6mm. 6.2 Coarse point The area specified by the line is the minimum area of ​​the mounting surface; the right angles of the rectangle can be rounded, and the maximum rounded radius R is D.
The distance from the edge of the mounting surface to the axis of each screw hole is equal. 6.3 The minimum space required for each mounting surface is the center distance between the minimum two identical mounting surfaces on the nest block. 6.4 The minimum depth of each locating pin hole is 8mm6.5 The maximum operating pressure of the base plate or block of each mounting surface must be indicated in the manufacturing. Figure 1 Mounting surface of pressure control valves, sequence valves, load control valves, throttle valves and check valves with a maximum main oil port diameter of 4mm (code: 02) Note: 1) See 6,1; 2) See 6.2; 3) See 5,3; 4) See 6,4. Dimensions
GB8100-87
Table 1 Dimensions of mounting surface of pressure control valves, sequence valves, unloading valves, throttle valves and non-return valves with a maximum main oil port diameter of 4 mm T
Figure 2 Mounting surface of pressure control valves, sequence valves, unloading valves, throttle valves and non-return valves with a maximum main oil port diameter of 6.3 mm (code: 03) Notes: 1) See 6.1; 2) See 6.2; 3) See 6.3, 4) See 6.4. Table 2 Mounting surface dimensions of pressure control valves, sequence valves, unloading valves, throttle valves and check valves with a maximum main oil port diameter of 6.3 mm
GB 8100—87
Figure 3 Mounting surface of pressure control valves, sequence valves, unloading valves, throttle valves and check valves with a maximum main oil port diameter of 14.7 mm (code: 06) Notes: 1) See 6, 1; 2) See 6, 2; 3) See 6.3; 4) See 6.4. Table 3 Dimensions of mounting surface for pressure control valves, sequence valves, unloading valves, throttle valves and non-return valves with a maximum main oil port diameter of 14.7 mm
GB 8100—87
Figure 4 Mounting surface for pressure control valves, sequence valves, unloading valves, throttle valves and non-return valves with a maximum main oil port diameter of 23.4 mm (code: 08) Notes: 1) See 6.1; 2) See 6.213) See 6.3: 4) See 6.4. Table 4 Installation surface dimensions of pressure control valves, sequence valves, unloading valves, throttle valves and non-return valves with a maximum main oil port diameter of 23.4 mm B
GB 8100-87
102-an2
Figure 5 Installation surface of pressure control valves, sequence valves, unloading valves, throttle valves and non-return valves with a maximum main oil port diameter of 32 mm (code: 10) Note: 1) See 6.1; 2) See 6.213) See 6.3: 4) See 6.4. Table 5 Installation surface dimensions of pressure control valves, sequence valves, unloading valves, throttle valves and non-return valves with a maximum main oil port diameter of 32 mm 1
GB 810087
Appendix A
Oil port letter symbols
(supplement)
Table A1 applies to direct-acting pressure control valves, unloading valves, throttle valves and check valves specified in this standardA1
Yuli control valve
Pressure control valve with bypass check valve
Sequence valve
Sequence valve with bypass check valve
Yuhetao
Unloading valve with bypass check valve
Throttle valve
Throttle valve with bypass check valve
Single-compartment valve
Hydraulic control check valve
Note: These two forms of oil port marking correspond to current practice. GB 8100—87
Continued Table A1
A2Table A2 applies to the pilot-operated pressure control valves, sequence valves and unloading valves of this standard. Table A2
Pressure control valve
Pressure control valve with bypass check valve
Sequence valve
Sequence valve with bypass check valve
Unloading valve
Note: Auxiliary remote control port can be closed when not needed GB 8100—87
Continued Table A2
These two oil port marking forms correspond to current practice. Additional notes:
This standard was proposed and managed by the National Hydraulic and Pneumatic Standardization Technical Committee. This standard was drafted by the Beijing Institute of Automation of the Mechanical Industry. Internal control
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