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GB forged steel flange valve

Products > Forged steel valve > GB forged steel flange valve

GB forged steel flange valve

Model: Z41H
Nominal diameter: DN15 ~ 50mm
Nominal pressure: PN1.0 ~ 10.0MPa
Main material: A105, LF2, F5, F11, F22, F304, F316, F304L, F316L
Design and manufacture: GB12234GB1221GB9131
Structure Length: JB / T74
Connection Flange: GB9112 ~ 9131
Pressure - Temperature: HGJ67JB / T74 ~ 90
Test and Inspection: HGJ44 ~ 76JB / T9092
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Forged steel gate valve Overview:

Forged steel   gate valve has three kinds of bonnet design, the first is a bolt-type   valve bonnet, connected by concave and convex surface, stainless steel   with flexible graphite spiral wound gasket, ring can also be used on   request connection, the second is the welding bonnet, Sealing by thread   after welding, according to demand can also be directly used rigid   welding, the third is self-sealing bonnet, threaded and self-sealing   bonnet connection.

 

Forged steel gate valve standard material detail:

Serial numberPart NameCStoASTMAStoASTMSStoASTM
A105F22F304 (L)F316 (L)
1BodyA105A182F22A182F304 (L)A182F316 (L)
2SeatA276420A276304A276304 (L)A276316 (L)
3gateA182F430 & 410A182F304A182F304 (L)A182F316 (L)
4Valve stemA182F6A182F304A182F304 (L)A182F316 (L)
5Gasket316 clip flexible graphite316 Clamp PTFE
6capA105A276f304A276F304 (L)A276F316 (L)
7boltA193B7A193B16A193B8A193B8M
8PinA276420A276 304
9Packing pressure sleeveA276410A182F304 (L)A182F316 (L)
10Easter boltA193B7A193B16A193B8A193B8M
11Packing platenA105A182F11A182F304 (L)A182F316 (L)
12NutA1942HA1944A1948A1948M
13Stem nutA276420
14fasten the screw nutA1942HA1944A1948A1948M
15NameplateSS
16HandwheelA197
17GasketA473431
18fillerFlexible graphitePTFE
Suitable mediaWater, steam, oil and so onWater, steam, oil and so onNitric acid, acetic acid and so on
proper temperature-29 ° C to 425 ° C-29 ° C to 550 ° C-29 ℃ ~ 200 ℃

Note:   Other materials required by the customer may also be used. Seal   Material Matching Customers Specified Internal Part Code Decision

CS = carbon steel; AS = alloy steel; SS = stainless steel; 
 
 forged steel gate valve size (MM)
 (PN6.4MPa)

DN (mm)LDD1D2bfz-φdH
15170105755518-24-φ14185
20190125906820-24-φ18200
252101351007822-24-φ18225
322301501108224-24-φ23380
402401651259524-34-φ23300
5025017513510526-34-φ23360

 

(PN1.0MPa)

DN (mm)LDD1D2bfz-φdH
15170105755520-24-φ14185
20190125906822-24-φ18200
252101351007824-24-φ18225
322301501108224-24-φ23380
402401651259526-34-φ23300
5025019614511228-34-φ25360


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