General of gate valve
Gate Valve are widely used in fluid-handing systems for flow control. Gate valves are so named because the part that either stops or allows flow through the valve acts somewhat like the opening or closing of a gate and is called, appropriately, the gate. The gate is usually wedge shaped. When the valve is wide open, the gate is fully drawn up into the valve, leaving an opening for flow through the valve the same size as the pipe in which the valve is installed. Therefore, there is little pressure drop or flow restriction through the valve. Gate valve have two types, rising-stem type and non-rising stem type.
Forged steel flange gate valve Series:Gate Valve
Forged Steel Valve are used in Oil Refining and other industrial applications where forged steel material is required. Higher pressures and temperatures are involved and the line size is generally under 2-1/2". Other factors could also favor the selection of forged steel, such as system requirements for socket-weld piping and compatibility of media.
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Material List |
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Item |
Part name |
CS to ASTM |
AS to ASTM |
SS to ASTM |
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Type A105 |
Type F22 |
Type F304(L) |
Type F316(L)¡¡ |
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1 |
Body |
A105 |
A182 F22 |
A182 F304(L) |
A182 F316(L)¡¡ |
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2 |
Seat |
A276 420 |
A276 304 |
A276 304(L) |
A276 316(L)¡¡ |
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3 |
Wedge |
A276 410 & 430 |
A182 F304 |
A182 F304(L) |
A182 F316(L) |
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4 |
Stem |
A182 F6 |
A182 F304 |
A182 F304(L) |
A182 F316(L) |
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5 |
Gasket |
SS+Flexible graphite |
316+PTFE¡¡ |
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6 |
Bonnet |
A105 |
A182 F22 |
A182 F304(L) |
A182 F316(L) |
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7 |
Bolt |
A193 B7 |
A193 B16 |
A193 B8 |
A193 B8M |
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8 |
Pin |
A276 420 |
A276 304¡¡ |
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9 |
Gland |
A276 410 |
A182 F304(L) |
A182 F316(L) |
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10 |
Gland eyebolt |
A193 B7 |
A193 B16 |
A193 B8 |
A193 B8M¡¡ |
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11 |
Gland flange |
A105 |
A182 F11 |
A182 F304(L) |
A182 F316(L) |
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12 |
Nut |
A194 2H |
A194 4 |
A194 8 |
A194 8M¡¡ |
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13 |
Yoke Nut |
A276 410 |
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14 |
Lock Nut |
A194 2H |
A194 4 |
A194 8 |
A194 8M¡¡ |
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15 |
Nameplate |
SS¡¡ |
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16 |
Handwheel |
A197¡¡ |
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17 |
Bearing gasket |
A473 431 |
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18 |
Packing |
Flexible Graphite |
PTFE¡¡ |
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Suitable medium |
W.O.G etc |
W.O.G etc |
Nitric acid,Acetic acid etc.¡¡ |
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Suitable temperature |
-29¡æ¡«425¡æ |
-29¡æ¡«550¡æ |
-29¡æ¡«180¡æ |
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Note:Other material are available upon request. |
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CS=Carbon steel£»AS=Alloy steel£»SS=Stainless steel£» |
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Size(MM)&Weight(KG) |
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NPS |
Pressure |
¡¡1/2" |
¡¡3/4" |
¡¡1" |
¡¡1 1/4" |
¡¡1 1/2" |
2" |
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L(RF) |
150Lb |
108 |
117 |
127 |
140 |
165 |
203 |
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L1(BW) |
300Lb |
140 |
152 |
165 |
178 |
190 |
216 |
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¡¡ |
600Lb |
165 |
190 |
216 |
229 |
241 |
292 |
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H |
150Lb¡«300Lb |
158 |
169 |
197 |
236 |
246 |
283 |
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600Lb |
169 |
197 |
236 |
246 |
283 |
320 |
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W |
100 |
100 |
125 |
160 |
160 |
180 |
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Weight |
150Lb |
RTJ |
4.5 |
5.2 |
8.2 |
11.5 |
12.5 |
20.3 |
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BW |
2.8 |
3.3 |
5.4 |
7.1 |
8.2 |
12.5 |
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300Lb |
RTJ |
4.8 |
6.2 |
9.3 |
14 |
15.5 |
23.4 |
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BW |
3.5 |
4.4 |
6.8 |
8.1 |
9.2 |
15.4 |
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600Lb |
RTJ |
5.9 |
7.4 |
10.4 |
16.2 |
17.5 |
28.3 |
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BW |
4.5 |
5.1 |
8.2 |
10.5 |
12.4 |
20.1 |
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Forged steel flange gate valve 900Lb~1500Lb Material List |
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Item |
Part name |
CS to ASTM |
AS to ASTM |
SS to ASTM¡¡ |
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Type A105 |
Type F22 |
Type F304(L) |
Type F316(L) |
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1 |
Body |
A105 |
A182 F22 |
A182 F304(L) |
A182 F316(L) |
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2 |
Seat |
A276 420 |
A276 304 |
A276 304(L) |
A276 316(L) |
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3 |
Wedge |
A276 410 & 430 |
A182 F304 |
A182 F304(L) |
A182 F316(L) |
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4 |
Stem |
A182 F6 |
A182 F304 |
A182 F304(L) |
A182 F316(L) |
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5 |
Gasket |
SS+graphite |
SS+PTFE |
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6 |
Bonnet |
A105 |
A182 F22 |
A182 F304(L) |
A182 F316(L) |
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7 |
Bolt |
A193 B7 |
A193 B16 |
A193 B8 |
A193 B8M¡¡ |
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8 |
Pin |
A276 420 |
A276 304 |
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9 |
Gland |
A276 410 |
A182 F304(L) |
A182 F316(L)¡¡ |
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10 |
Gland eyebolt |
A193 B7 |
A193 B16 |
A193 B8 |
A193 B8M |
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11 |
Gland flange |
A105 |
A182 F11 |
A182 F304(L) |
A182 F316(L) |
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12 |
Nut |
A194 2H |
A194 4 |
A194 8 |
A194 8M |
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13 |
Yoke Nut |
A276 420 |
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14 |
Lock nut |
A194 2H |
A194 4 |
A194 8 |
A194 8M |
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15 |
Nameplate |
SS |
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16 |
Hanwheel |
A197¡¡ |
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17 |
Bearing gasket |
A473 431¡¡ |
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18 |
Packing |
Flexible Graphite |
PTFE |
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Suitable medium |
W.O.G etc |
W.O.G etc |
Nitric acid,Acetic acid etc¡¡ |
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Suitable temperature |
-29¡æ¡«425¡æ |
-29¡æ¡«550¡æ |
-29¡æ¡«180¡æ |
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Note:Other material are available upon request. |
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CS=Carbon steel£»AS=Alloy steel£»SS=Stainless steel£» |
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Size(mm)&Weight(kg) |
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¡¡ |
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NPS |
1/2" |
3/4" |
1" |
11/2" |
11/4" |
2"¡¡ |
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L(RTJ) |
900Lb¡«1500Lb |
216 |
229 |
254 |
279 |
305 |
371¡¡ |
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L1(BW) |
900Lb¡«1500Lb |
216 |
229 |
254 |
279 |
305 |
368¡¡ |
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H(Open) |
197 |
197 |
236 |
246 |
283 |
330¡¡ |
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W |
125 |
125 |
160 |
160 |
180 |
200 |
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Weight |
RTJ |
7.2 |
11.5 |
15.6 |
16.2 |
22.6 |
32.8¡¡ |
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BW |
5.2 |
9.3 |
12.4 |
13.8 |
18.9 |
27.5 |
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