Check valve forged steel valve cover design in three forms. The first is a bolt type valve cover, according to this design form design of the valve, the valve body and the valve cover bolt nut connection, spiral wound gasket (316 clamp flexible graphite sealing manufacturing). Customers have special requirements can be used when the metal ring is connected. Second kinds of design form is the welded bonnet, according to this design form of the valve, the valve body and the valve cover with a threaded connection, welded seal. Customers have special requirements can be used when the third is connected through welding. Junctionvalve pressure valve cover, according to this design form design of the valve, the valve body and valve cover with a threaded connection, pressure from the dense ring seal.
There are three different design structures, which are lift check valve, ball type check valve and swing check valve.
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact.
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The serial number
|
Part name
|
CStoASTM
|
AStoASTM
|
SStoASTM
|
|
|
A105
|
F22
|
F304（L）
|
F316（L）
|
|
1
|
The valve body
|
A105
|
A182F22
|
A182F304（L）
|
A182F316（L）
|
|
2
|
The disc
|
A276420
|
A276304
|
A276304（L）
|
A276316（L）
|
|
3
|
The sealing nut
|
316Clamp flexible graphite
|
316clipPTFE
|
|
4
|
Sealing ring
|
A105
|
A182F22
|
A182F304（L）
|
A193 B8（M）
|
|
5
|
Fixed nut
|
SS
|
|
6
|
Improve bolt
|
A193B7
|
A193B16
|
A193B8（M）
|
A193B8（M）
|
|
Applicable medium
|
Water, steam, oil, etc
|
Water, steam, oil, etc
|
Nitric acid, acetic acid, etc
|
|
|
Suitable temperature
|
—29℃～425℃
|
—29℃～550℃
|
—29℃～200℃
|
900LB～1500LB
|
The serial number
|
Part name
|
CStoASTM
|
AStoASTM
|
SStoASTM
|
|
A105
|
F22
|
F304（L）
|
F316（L）
|
|
1
|
The valve body
|
A105
|
A182F22
|
A182F304（L）
|
A182F316（L）
|
|
2
|
The disc
|
A276420
|
A276304
|
A276304（L）
|
A276316（L）
|
|
3
|
gasket
|
316Clamp flexible graphite
|
316clipPTFE
|
|
4
|
The cover
|
A105
|
A182F22
|
A182F304（L）
|
A193 B8（M）
|
|
5
|
nameplate
|
SS
|
|
6
|
bolt
|
A193B7
|
A193B16
|
A193B8（M）
|
A193B8（M）
|
|
7
|
The ball
|
A182F304
|
A182F304
|
A182F304
|
A182F304
|
|
Applicable medium
|
Water, steam, oil, etc
|
Water, steam, oil, etc
|
Nitric acid, acetic acid, etc
|
|
Suitable temperature
|
—29℃～425℃
|
—29℃～550℃
|
—29℃～200℃
|
800LB、900LB～1500LBStandard material list
The serial number parts name
A105 F22 F304（L） F316（L）
1 The valve body A105 A182F22 A182F304（L） A182F316（L）
2 The seat A276410 A276304 A276F304（L） A276F316（L）
3 The disc A276420 A276304 A276F304（L） A27F316（L）
4 nut A1942H A1944 A1948 A1948M
5 rocker A105 A182F22 A182F304（L） A182F316（L）
6 gasket 316Clamp flexible graphite 316clipPTFE
7 The cover A105 A182F22 A182F304（L） A182 F316（L）
8 bolt A193B7 A193B16 A193B8（M） A193B8（M）
9 pin a276420 A182F304 A182F316
Applicable medium such as water, steam, oil water, steam, oil such as nitric acid, acetic acid, etc
Suitable temperature： —29℃～425℃ —29℃～550℃ —29℃～200℃
产品尺寸
800LB：
|
NPS
|
reducing
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4”
|
11/2”
|
2”
|
|
|
Full bore
|
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4”
|
11/2”
|
2”
|
|
L
|
79
|
79
|
92
|
111
|
120
|
152
|
172
|
200
|
|
W
|
61
|
61
|
65
|
79
|
95
|
103
|
118
|
132
|
|
The weight of the
|
Bolt type
|
1.4
|
1.2
|
1.5
|
3.1
|
3.9
|
5.6
|
8.9
|
12.5
|
|
welded
|
1.1
|
1.0
|
1.2
|
2.9
|
3.3
|
4.9
|
8.1
|
10.9
|
900LB～1500LB
|
NPS
|
reducing
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4”
|
11/2”
|
2”
|
|
|
Full bore
|
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4”
|
11/2”
|
2”
|
|
L
|
92
|
111
|
111
|
120
|
152
|
172
|
200
|
220
|
|
W
|
65
|
79
|
79
|
97
|
104
|
120
|
139
|
215
|
|
The weight of the
|
Bolt type
|
1.6
|
3.4
|
3.3
|
5.5
|
6.0
|
9.2
|
12.9
|
16.2
|
|
welded
|
1.3
|
3.2
|
3.1
|
4.8
|
5.4
|
8.5
|
11.2
|
14.3
|
1, when the medium flow direction by the regulation, the disc by the function of medium force, by open; Medium counter-current, due to the weight of the disc and disc, the function of reverse force by the medium and the valve seat valve sealing surface closed and closed, to achieve the purpose of preventing medium counter-current.
2, the valve body and disc sealing surface is made of stainless steel welding.
3, the length of the valve structure according to the provisions of the GB12221-1989 flange size according to the provisions of the JB/T79-1994.
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