GB/T 2877-1981 Two-way cartridge hydraulic valve installation connection dimensions

GB/T 2877-1981 Two-way cartridge hydraulic valve installation connection dimensions GB/T2877-1981 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Two-port slip-in cartridge valves cavities Installation connection dimensions Hydraalic luid power-
-Two -port slip-in cartridge valves cavities This standard applies to integrated installation two-way cartridge hydraulic valves with a nominal pressure below 315 bar. 2 Two-way cartridge hydraulic valves refer to two-way hydraulic valves with plug-in connection. UDC 621.8.032
:621.646.2
GB 2877-81
3 Two-way cartridge hydraulic valve installation connection flanges are available in three types: square, rectangular and round. Square flange type A or rectangular flange type B can be used for nominal diameters below 63mm, and round flange type C can be used for nominal diameters of 80 and 100mm. "The installation connection size of the plug-in hydraulic valve is shown in the following chart: 4.1 Two-way plug-in connection size of nominal diameter 16, 25, 32, 40, 50, 63mm (see Table 1). 4.1.1 Type A flange
Issued by the State Administration of Standardization on January 21, 1982
Implemented on March 1, 1983
GB 2877-81
Positioning pin hole
Type B flange (other dimensions are the same as Type A)
Marking example:
GB 2877-
B: Upper working port
X: Control concave population
Y: Control port outlet
Z1Z3 spare control port
Z: Priority working port
Z2: Priority outlet
Nominal diameter 25mm A-type plug-in hydraulic valve installation connection dimensions connection size
GB 287781
According to d.Minimum
According to the maximum
GB 2877-B1
Note: ① The pilot valve and the regulating part can exceed the dimensions specified in ～b. 32
② The working port B can be arranged arbitrarily around the axis of the working port A within the depth range of (t, \t) and (1-1), and its axis and hole d may not intersect at 90°.
③ The depth and angle of the control port are determined according to the purpose. GB 2877-81
① For ferrous metals, the recommended threading depth is 1.25 times the thread diameter, 42 two-way cartridge valve connection dimensions with nominal diameters of 80 and 100 mm (see Table 2). C-type flange
Marking example:
Installation connection dimensions of C-type cartridge valve with a nominal diameter of 80 mm: Connection dimension C80GB2877-81
Floor d, minimum
According d, maximum
GB 2877—81bzxz.net
Note: The pilot valve and the regulating part may exceed the size specified in 6. The workpiece can be placed arbitrarily around the axis of the workpiece within the depth range of (t, -t;) and (, -g). Its axis intersects with the thread d and is 9
. The depth and degree of control are determined according to the purpose. ④ For ferrous metal threads, the screwing depth is 1.25 times the thread diameter. Additional remarks:
This standard is proposed and managed by the National Hydraulic and Pneumatic Standardization Technical Committee. This standard is drafted by the Jinan Casting and Forging Machinery Research Institute of the Ministry of Machinery. The main drafter of this standard is Peng Li.
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