Forging the steel corrugated pipe valve has two kinds of valves to overlay the form of designing. First bolt type valve cover, according to the valve that form design, valve its body and valve is it join with the bolt nut to cover, the twining type spacer (316 inserts the soft graphite and makes ) is sealed. The customer can adopt the metal ring to join while having special demands . The second kind of design form is that welding type valves are covered, the valve designed according to this kind of form , its valve of body and valve are covered and joined with the whorl, weld and seal completely. The customer can be adopted and welded completely completely and joined while having special demands.
The material of the major part is explained:
Serial number
Part name
CS to ASTM
AS to ASTM
SS to ASTM
Type A105N
Type A182 F22
Type A182 F304(L)
Type A182 F316(L)
1
The valve has body
A105N
A182 F22
A182 F304(L)
A182 F316(L)
2
Valve seat
A276 420
A276 304
A276 304(L)
A276 316(L)
3
Floodgate board
A276 420
A276 304
A276 304(L)
A276 316(L)
4
Valve stem
A182 F6a
A182 F304
A182 F304(L)
A182 F316(L)
5
Corrugated pipe
304
304(L)
316(L)
6
The valve covering
A105N
A182 F22
A182 F304(L)
A182 F316(L)
7
Packing
Soft graphite
PTFE
8
The bolt / nut hang closely
A193 B8/A 194 2H
A193 B8/A 194 4
A193 B8/A194 8
A193 B8/A194 8M
9
Packing pressing plate
A276 420
A182 F304
10
Packing pressing plate
A105N
A182 F304
11
Valve stem nut
A276 420
12
Handwheel
A197 A182 F304
13
Extend one
A105
A182 F22
A182 F304(L)
A182 F316(L)
14
Put and tow the board
A182 F304
A182 F304
A182 F304(L)
A182 F316(L)
15
Have and tow the board
A182 F304
A182 F304
A182 F304(L)
A182 F316(L)
16
Screw
A276 420
A182 F304
17
Locknut
A194 2H
A194 4
A194 8
A194 8M
Suitable medium
Water , steam , oil ,etc.
Water , vapour , oil ,etc.
Nitric acid , acetic acid ,etc.
Suitable temperature
-29°C- 425°C
-29°C- 550°C
-29°C- 200°C
Main external dimension :
NPS
Contract in the foot-path
3 /8
1 /2
3 /4
1
1 1 /4
1 1 /2
2
The whole foot-path
3 /8
1 /2
3 /4
1
1 1 /4
1 1 /2
L1
79
79
92
111
120
120
140
L
79
79
92
111
120
152
172
H (open)
220
220
225
244
321
321
347
W
100
100
100
125
160
160
180
Weight
Bolt type
3.2
3.0
4.8
7.9
11.0
16.8
25.2
Welding type
3.0
2.8
4.8
7.0
9.6
13.5
20.25
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