Stainless steel forged steel check valve
Product Overview
Product model: H41Y
Nominal diameter: NPS1/2 "~2"
Nominal pressure: Class150~600Lb
Working temperature: 600 ℃
Applicable media: water, oil, steam, gases, certain corrosive liquids, etc
Main materials: A105N, A182 F22, A182 F304 (L), A182 F316 (L)
Structure length: according to ANSI B16.5 F16.5
Product Overview
The American standard forged steel flange check valve disc and seat sealing surface are made of cobalt based hard alloy plasma spray welding, which has high hardness, erosion resistance, and durability. Suitable for cutting or connecting media on pipelines under various operating conditions such as petroleum, chemical, hydraulic, and thermal power plants with a working temperature of 600 ℃. Applicable media include water, oil, steam, gases, and certain corrosive liquids.
Operational Principle
The forged steel flange check valve disc and seat sealing surface are made of iron based alloy or Stellite cobalt based hard alloy surfacing, which is characterized by wear resistance, high temperature resistance, corrosion resistance, good scratch resistance, and long service life. The connection between the stainless steel pin shaft and the valve disc adopts an internal structure with excellent performance and more reliable sealing. The product is widely used in various working conditions such as petroleum, chemical, pharmaceutical, and power industries to prevent medium backflow in pipelines. Applicable media include water, oil, steam, gas, and certain corrosive liquid media.
Standard Material List
Product Features
1. The guide rib is welded with hard alloy, and the guide sleeve of the upper chamber of the valve body is made of stainless steel material to ensure flexible valve disc movement.
2. The sealing surface of the valve disc and valve seat is made of cobalt based hard alloy plasma spray welding, which has high hardness, erosion resistance, and durability.
3. Pressure seal design and high-purity graphite gasket ring to ensure high air tightness.
4. The inner chamber of the valve adopts a pressure self tightening sealing structure, and the higher the inner chamber pressure, the better the sealing performance.
5. The valve disc rotates around the pin axis outside the valve seat, reducing the violent impact that occurs during closure.
Standard Material List
|
Serial Number |
Part Name |
CS to ASTM |
AS to ASTM |
SS to ASTM |
|
|
Type A105N |
Type F22 |
Type F304(L) |
Type F316(L) |
||
|
1 |
Body |
A105N |
A182 F22 |
A182 F304(L) |
A182 F316(L) |
|
2 |
Nameplate |
SS |
|||
|
3 |
Valve flap |
A276 420 |
A276 304 |
A276 304(L) |
A276 316(L) |
|
4 |
Bonnet |
A105N |
A182 F22 |
A182 F304(L) |
A182 F316(L) |
|
5 |
shim |
316Clamping flexible graphite |
316 clamp PTFE |
||
|
6 |
Bolt |
A193 B7 |
A193 B16 |
A193 B8(M) |
A193 B8(M) |
|
Applicable Medium |
Water, steam, oil, etc |
Water, steam, oil, etc |
Nitric acid, acetic acid, etc | ||
|
Temperature |
-29°C～425°C |
-29°C～550°C |
-29°C～200°C |
||
※ Attention: Other materials required by customers can also be used. The matching of sealing surface materials is determined by the internal part code specified by the customer.
CS=carbon steel; AS=alloy steel; SS=stainless steel.
Main connection dimensions and weight
|
NPS |
1/2 |
3/4 |
1 |
11/4 |
11/2 |
2 |
||
|
L(RTJ) |
150 |
108 |
117 |
127 |
140 |
165 |
203 |
|
|
300 |
152 |
178 |
203 |
216 |
229 |
267 |
||
|
600 |
165 |
190 |
216 |
229 |
241 |
292 |
||
|
H |
150,300 |
61 |
61 |
79 |
95 |
103 |
118 |
|
|
600 |
61 |
79 |
95 |
103 |
118 |
135 |
||
|
Weight |
150 |
RTJ |
2.56 |
3.37 |
4.37 |
8.17 |
8.94 |
12.64 |
|
BW |
1.70 |
1.90 |
2.10 |
5.12 |
5.50 |
7.89 |
||
|
300 |
RTJ |
2.73 |
3.65 |
4.74 |
8.77 |
9.60 |
13.70 |
|
|
BW |
1.90 |
2.10 |
3.00 |
5.12 |
6.60 |
7.85 |
||
|
600 |
RTJ |
3.00 |
4.00 |
5.83 |
9.47 |
10.10 |
15.6 |
|
|
BW |
2.00 |
3.12 |
4.25 |
7.25 |
8.56 |
13.60 |
||
