
API 6D Industrial Flange or Wafer Cast Iron or Forged Stainless Steel Ball or Swing Check Valve
Stable quality, good reputation and reasonable price are our promises. We uphold the concept of quality first and continuous innovation and become the benchmark in the Double Block And Bleed Ball Valve, Metal Seated Floating Ball Valve, Lubricated Plug Valves industry. Our country provides the private enterprise with new innovation market space and development space to create more brilliant achievements possible for them. Our products have good reputation from the world as its most competive price and our most advantage of after-sale service to the clients.
Product Details
NSV Forged Swing Check valves,its produced one piece that’s stronger than an equivalent casted parts.like all check valves, are used to prevent back flow in the line. The pressure of the fluid passing through a system opens the valve, while any reversal of flow will close the valve. The swing check valve functions by allowing flow forces to move the closure element, it is a hinged clapper which swings or rotates around a supporting shaft.

Design Features
Full port or reduced port design
Swing disc
Bolted bonnet(B.B),Welded bonnet(W.B),Pressure Seal Bonnet(P.S.B) also available.
Flanged, butt-welded, socket- welded, or threaded ends

Standard Material Specifications
| NO. | Part Name | CS to ASTM | AS to ASTM | SS to ASTM | |
Type A105 | Type F22 | Type F304(L) | Type F316(L) | ||
1 | Body | A105 | A182 F22 | A182 F304(L) | A182 F316(L) |
2 | Piston Disc | A276 410 | A276 304 | A276 304(L) | A276 316(L) |
3 | Gasket | Corrugated SS + graphite | SS + PTFE | ||
4 | Bonnet | A105 | A182 F22 | A182 F304 L | A182 F316(L) |
5 | Nameplate | SS | |||
6 | Bolt | A193 B7 | A193 B16 | A193 B8M | A193 B8M |
7 | Ball | A182 F304 | A182 F304 | A182 F304 | A182 F304 |
Suitable Medium | W.O.G.etc | W.O.G.etc | HNO3CH3OOH etc | ||
Suitable Temperature | -29℃~425℃ | -29℃~550℃ | -29℃~180℃ | ||
Note: Other materials are available upon request. CS=Carbon Steel; AS=Alloy Steel; SS=Stainless Steel.
BODY-BONNET CONNECTION:BOLTED-BONNET
NSV Standard construction of boy-bonnet connection is bolted,with s apiral wound gasket to seal the connection.
On request we offer as well Ring Joint connection,Ring Joint that’s for high pressure on class 2500lb bolted bonnet,als on request on other

FAQ
1.Q: What’s the brand of your company can supply ?
A:NSV or OEM service
2.Q: Do u provide sample,is it free or extra ?
A: Yes, we could offer the sample, due to its value,we can supply free sample that small value and you afford the freight,but also welcome visit our factory to inspect quality.
3.Q: What’s your payment terms?
A: As our company’s policy, we normally have bellow 3 payment terms,it also can negotiation both parties before confirm order.
1) 100% T/T or West Union in advance that order value within $2,000.00USD.
2)30% T/T advance+70% balance after the shipment for the order value above $2,000.00USD.
3)L/C at sight for the order value above $50,000.00USD.
At the same time, we do the job actively to do research and improvement for API 6D Industrial Flange or Wafer Cast Iron or Forged Stainless Steel Ball or Swing Check Valve. We take measure at any expense to achieve essentially the most up-to-date equipment and approaches. We should provide excellent products for customers, strive to meet the needs of different consumers and constantly improve the competitiveness.
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