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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
Product details

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 number Part Name CStoASTM AStoASTM SStoASTM
A105 F22 F304 (L) F316 (L)
1 Body A105 A182F22 A182F304 (L) A182F316 (L)
2 Seat A276420 A276304 A276304 (L) A276316 (L)
3 gate A182F430 & 410 A182F304 A182F304 (L) A182F316 (L)
4 Valve stem A182F6 A182F304 A182F304 (L) A182F316 (L)
5 Gasket 316 clip flexible graphite 316 Clamp PTFE
6 cap A105 A276f304 A276F304 (L) A276F316 (L)
7 bolt A193B7 A193B16 A193B8 A193B8M
8 Pin A276420 A276 304
9 Packing pressure sleeve A276410 A182F304 (L) A182F316 (L)
10 Easter bolt A193B7 A193B16 A193B8 A193B8M
11 Packing platen A105 A182F11 A182F304 (L) A182F316 (L)
12 Nut A1942H A1944 A1948 A1948M
13 Stem nut A276420
14 fasten the screw nut A1942H A1944 A1948 A1948M
15 Nameplate SS
16 Handwheel A197
17 Gasket A473431
18 filler Flexible graphite PTFE
Suitable media Water, steam, oil and so on Water, steam, oil and so on Nitric 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) L D D1 D2 bf z-φd H
15 170 105 75 55 18-2 4-φ14 185
20 190 125 90 68 20-2 4-φ18 200
25 210 135 100 78 22-2 4-φ18 225
32 230 150 110 82 24-2 4-φ23 380
40 240 165 125 95 24-3 4-φ23 300
50 250 175 135 105 26-3 4-φ23 360


(PN1.0MPa)

DN (mm) L D D1 D2 bf z-φd H
15 170 105 75 55 20-2 4-φ14 185
20 190 125 90 68 22-2 4-φ18 200
25 210 135 100 78 24-2 4-φ18 225
32 230 150 110 82 24-2 4-φ23 380
40 240 165 125 95 26-3 4-φ23 300
50 250 196 145 112 28-3 4-φ25 360


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