API Duplex Stainless Steel Non Return Swing Check Valve

We have a dedicated product research and development department to continuously improve the products produced, so that our F51 Gate Valve, Stainless Steel Knife Gate Valve, Cast Steel Swing Check Valve is always at the advanced level. While constantly improving ourselves, we will adopt a sincere service attitude and a high degree of responsibility. How about to start your good business with our company? We are ready, trained and fulfilled with pride.

  NSV Monel Floating Ball Valves is mainly used in chemical and petrochemical industry and Marine development. It is a kind of nickel base alloy material composed of nickel (from 52 to 67%) with good corrosion resistance in seawater, chemical solvent,that’s ball valve can make it with cast(A494 M35-1) or forged body(B564 N04400).

• Applicable Standards:
  

  Ball Valve design according to API6D,BS5351,ASME B16.34

  Face to face ASME B16.10,AP6D

  End Flanges ASME B16.5/ASME B16.47

  Fire Safety API607,API6A

  Inspection and test API 598,API6D

Body: Monel 400(A494 M35-1,B564 N04400)
Ball: Monel 400(A494 M35-1,B564 N04400)
Seat:PTFE,RPTFE
Size Range: 1/2"~8"
Pressure Rating: ASME CL, 150, 300, 600

• Design Description:
  - Two Pieces or Three Pieces Body
  - Soft Seated
  - Full or Reduced Bore
  - Flanged Ends
  - Anti Blow Out Stem
  - Anti Static Device
  - Fire Safe Design
  - Locking device
  - ISO Mounting Pads (Optional)

STRUCTURAL FEATURES

1. Fireproof Structure Design
With the valve heated in a fire application, the non-metal material parts such as seat sealing ring of PTFE, stem back seat gasket, gland packing, and the sealing gasket between body and bonnet might disintegrate or be damaged due to high temperature. Our company specially designed structure of auxiliary metal to metal seal is provided to effectively prevent both internal and external leakage of the valve. As required by custom ers, Our company floating ball valves with design can meet the requirement of API 607, API 6FA,BS 6755.

2. Reliable Sealing Of Valve Stem
The stem is provided with the shoulder at its bottom so that it will not be blown out by the medium even under the extreme conditions such as abnormal pressure rise inside the valve cavity, failure of gland plate and etc. In addition, to avoid leakage after the stem packing is burnt in case of fire, the thrust bearing is set at the place where the stem shoulder and body contact to form a reverse sealing seat. The sealing force of the reverse seal will increase according to the increase of medium pressure, so as to ensure reliable stem sealing under various pressure, prevent leakage and avoid accident spreading.

The stem adopts V type packing sealing structure. The V type packing can effectively change the pressing force and medium force of the gland into the sealing force of the stem.

According to user requirements, the disc spring loaded packing pressing mechanism can be adopted to make the sealing of stem packing more reliable.

FAQ

1.Q: What's the brand of your company manufacture ?

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: 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.

4.Q:How can I visit your company?

A: We always welcome you to factory. However, your visit intention shall be pure. You can visit factory conveniently by noticing your visit to the department in charge depending on your visit purpose in advance. For the way to factory, please refer to map“About Us” of homepage.

5.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.

While increasing our global market influence, we will continue to focus on the quality of our API Duplex Stainless Steel Non Return Swing Check Valve and services and maintain our good reputation as a customer-centric company. We develop the company based on the principle of 'being a man with integrity, doing business with integrity' and following the business philosophy of 'pursuing all customer needs as goals'. The company will be committed to continuous improvement of product production technology and quality.