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Water Seal Gate Valve
Category£ºGate Valve Normal
Click: 0 2007-08-22
 
The purpose of Water Seal Gate Valve :
Suitable working pressure 100MPa,working temperature 425¡æ, Suitable medium water, steam, oil and Non-caustic gas.
Characteristics:
¢ñ.S/Y series usually use double disks and bi-directional flexible seal, open and close nimbly,reliable for seal.
¢ò.Have simple in structure, compact reasonable, examine and repair conveniently, operation life long
¢ó.Be used for on and off device on the pipe and must be full open and full closed, can not be used for regulate flow.
¢ô.The connection type are flanged and welded, actuator are gear/handle and electrical.  
Design and manufacture standard:
Design and manufacture:GB12234
Flange size: GB9113¡¡JB7490
Pressure and temperature: JB/T74¡¡GB9131
Welded size:-
Test and inspection: JB/T9092¡¡GB13927
Main Function Specification
Nominal pressure£¨MPa£©
Shell test
1.0
1.6
2.5
4.0
6.4
10.0
Seal test
1.5
2.4
3.8
6.0
9.6
15.0
Back seat seal test
1.1
1.8
2.8
4.4
7.0
11.0
Gas Seal Test
1.1
1.8
2.8
4.4
7.0
11.0
Suitable range
Model
Temperature£¨¡æ£©
Suitable medium
Carbon steel series
≤425
Water, steam, oil and Non-caustic gas
Alloy series
≤540
 Main Parts Material
Model
Part Name
Body ,Bonnet and York
Stem
Plate, Disc and Seal face
Seat Seal face,
Stem Nut
Packing
Carbon steel series£¨C£©
WCB
1Cr13
or
2Cr13
Cr13serise stainless steel or hard alloy
Stainless Steel
Aluminum Bronze
Soft Graphite
Alloy series£¨I£©
WCB Cr5Mol
20Cr1Mo1VA
Co-Alloy
Hard Alloy
Aluminum Bronze
Soft Graphite
Outline drawing
 
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