JB/T 2001.26-1999 Manual gate valve core for water system (PN=20, 31.5MPa)

JB/T 2001.26-1999 This standard is a revision of JB 2026-84 "Hydraulic Press Manual Gate Valve Core (Pg = 200 × 100000 ~ 315 × 100000Pa)". This standard specifies the type, size and technical requirements of manual gate valve core. This standard is applicable to manual gate valve cores with a nominal pressure of 20 and 31.5MPa. This standard was first issued on January 1, 1984. JB/T 2001.26-1999 Water System Manual Gate Valve Core (PN = 20, 31.5MPa) JB/T2001.26-1999 Standard Download Decompression Password: www.bzxz.net

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Standard of the Machinery Industry of the People's Republic of China
JB/T 2001.1~2001.74—1999
Water system assembly and parts1999-06-28 Issued
State Machinery Industry Bureau
2(-01-U1 Implementation
■ Scope
Standard of the Machinery Industry of the People's Republic of China
Water system
Manual gate valve core
Warer system-Core of hand-aperated shntnlT valve(PN=20,31.5 MPa )
This standard specifies the type, size and installation requirements of the manual valve core. This standard is applicable to the manual valve core with a nominal pressure of 20 and 31.3MPa. Type and size
1 The working state of the manual valve core is closed. After opening, it is a passage. J/T2001.26—1909
Standard B2026—1
When the system is designed and the pipeline is arranged, it must be ensured that the lower manual valve core is in the working state and the upper manual valve core is in the working state. When the cavity is under high pressure, no matter there is a safety transmission or a system-driven transmission, the water output of the high-pressure water pump is not connected to the upper cavity of the dynamic valve core: it must be connected to the lower cavity. That is, the flow direction is not necessarily connected to the high pressure. The term "connected to the commercial cavity" should be judged when the manual valve is in the working state. In order to prevent the overpressure effect of the dynamic valve core, no bypass is set during the design. 2.2 The type and size of DN2-mm) shall be in accordance with the provisions of Figure 2 and Table 2. 23 The required size of DA80-2Mmm shall be in accordance with the provisions of Figure 2 and Table 2. 3 Technical requirements
3.1 Nominal pressure 35MPu, test pressure 42MHa. 20MPa for public pressure, 30MPa for test pressure
3.2 The test pressure liquid should be the same as the working liquid, 10m pressure relief, no leakage or pressure drop at the case and the mouth, 4 Marking example
Nominal pressure gauge for 32m:
Moving brake core DN32JBT2001.26—1999 Approved by the Machinery Industry Bureau on 1999-06-28, implemented on 2000-01-01
JB/T 2001.26—{999
DN32-6S drainage core
1—offering: 2—test: 1-thread; 4-pressure plug: 5-pressure; 6—: 7U-shaped sealing river: 3—hand: ￥—closed: — purchase, 11-, 12-, 13—explosion seat: 14 lubrication; 15—valve: 16—0-shaped country
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J9/T2001.26.2
J3/E2001.26.3
[B/T 200L26.4
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BT2001.26.2
JB.T200I.26.1
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JEB/T2001.26-1909
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JAT 2001.26.5
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JET2001.26.7
JBT 2001.26.8
J9:T2003.26.9
JH2001.25.10
J3/T2001.25.5
J3-T 2001.25.6
J3/T 2001.26.7
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