The bellows forged steel gate valve is a gate with opening and closing parts. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed through the contact between the valve seat and the gate plate. Usually, the sealing surface will be welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate has a rigid gate and an elastic gate. According to the difference of the gate, the gate valve is divided into a rigid gate valve and an elastic gate valve.
List of commonly used materials for bellows forged steel gate valves:
Serial number
Part Name
CS to ASTM
AS to ASTM
SS to ASTM
TypeAl05
TypeA182 F22
Type A182 f304(L)
Type A182 F316(L)
l
Valve body
A105
A182 F22
A182 F304(L)
A182 F316(L)
2
Valve seat
A276 420
A276 304
A276 3040
A276 316(L)
3
gate
A276 420
A276 304
A276 304(L)
A276 316(L)
4
Stem
A182 F6a
A182 F304
A182 304(L) A182 F316(L)
5
Bellows
304
304(L)
316(L)
6
cap
A105N
A182 F22
A182 F304fLl
A182 F316(L)
7
filler
Flexl'ble Graphite
A276 304
8
Hanging bolts/nuts
A193 B8ï¼A194 2H A193 B8ï¼A194 4
A193 B8/A194 B A193 V8/A194 8M
9
Packing sleeve
A276 420
A182 F304
10
Packing plate
A105N
A182 F304
1l
Stem nut
A276 420
12
Handwheel
A197
13
Extended set
A105 A182 F22 Al 82 F304(L) A182 F316(L)
14
Lower carriage
A182 F304 A182 F304 A182 F304(L) Al 82 F316(L)
15
Upper carriage
A182 F304 A182 F304
A1 82 F304(L)
A182 F316(L)
16
Screw
A276 420
A182 F304
17
fasten the screw nut
A194 2H
A194 4
A194 8
A194 8M
Applicable medium
Water, steam, oil, etc.
Water, steam, oil, etc.
Nitric acid, acetic acid, etc.
proper temperature
-29℃～425℃
-29℃～550℃
-29℃～180℃
Serial number
Part Name
CS to ASTM
AS to ASTM
SS to ASTM
TypeAl05
TypeA182 F22
Type A182 f304(L)
Type A182 F316(L)
l
Valve body
A105
A182 F22
A182 F304(L)
A182 F316(L)
2
Valve seat
A276 420
A276 304
A276 3040
A276 316(L)
3
gate
A276 420
A276 304
A276 304(L)
A276 316(L)
4
Stem
A182 F6a
A182 F304
A182 304(L) A182 F316(L)
5
Bellows
304
304(L)
316(L)
6
cap
A105N
A182 F22
A182 F304fLl
A182 F316(L)
7
filler
Flexl'ble Graphite
A276 304
8
Hanging bolts/nuts
A193 B8ï¼A194 2H A193 B8ï¼A194 4
A193 B8/A194 B A193 V8/A194 8M
9
Packing sleeve
A276 420
A182 F304
10
Packing plate
A105N
A182 F304
1l
Stem nut
A276 420
12
Handwheel
A197
13
Extended set
A105 A182 F22 Al 82 F304(L) A182 F316(L)
14
Lower carriage
A182 F304 A182 F304 A182 F304(L) Al 82 F316(L)
15
Upper carriage
A182 F304 A182 F304
A1 82 F304(L)
A182 F316(L)
16
Screw
A276 420
A182 F304
17
fasten the screw nut
A194 2H
A194 4
A194 8
A194 8M
Applicable medium
Water, steam, oil, etc.
Water, steam, oil, etc.
Nitric acid, acetic acid, etc.
proper temperature
-29℃～425℃
-29℃～550℃
-29℃～180℃
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