Butt Welded Bw Tilting Disc Check Valve

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 NSV Pressure Seal Tilting Disc Check Valve,Tilting Disc operation is automatic and requires no assistance. When the flow exerts sufficient pressure against the disc to overcome the disc's weight, the disc, which is set on a hinge, lifts allowing the flow to continue through the piping system. As the pressure decreases, the disc lowers until its own weight forces it to seat. This prevents the possibility of a reversal in the flow.

• Applicable Standard
  Face to face per ANSI B 16.10
  Flange ends dimension ANSI B 16.5/ANSI B 16.47
  Final inspection tests to API598.

• Products Range
  Size: 2" ~ 20" (DN50 ~ DN500)
  Rating: ANSI 150lb-2500lb 
  Body Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel
  Trim: Per API 600

• Design Features:

  Quick closing system

      Stability at low and pulsating flow
      Moderate pressure drop

      Tight sealing of metal seat

      Seat contacts don’t occur until the disc is seated and closed

Structure Performance:
DOUBLE OFFSET

A high performance tiling disc check valve has double offset pivot (hinge pin) design.
The pivot offsets are made when constructing the valve with hinge pins which are located behind the centerline of sealing surface and slightly to one side of pipe centerline.

The offset purpose is to reduce rubbing and thus wear between seat and seal while valve is travelling

OFFSET 1
The hinge pin is located in the centerline of disc seal surface.

OFFSET 2
The hinge pin is offset to the conical axis.

SERVICE RECOMMENDATION

1.The center of gravity of disc is very close to the axis or rotation, so that the disc can be opened or closed very quickly without damage to the body, disc or seat. Since the valve is closed quickly upon flow reversal significant fluid velocities are not developed in the reverse direction, therefore minimizing the effects of water hammer.

2.The tilting disc check valve has greater stability at low flow rates and in pulsating service when compared to a swing check valve.

3.The pressure drop across a tilting disc check will usually be much less than for an equivalent life check.Although a tilting disc check valve will restrict flow slightly more than a swing check, the straight-through flow path provides a minimal pressure drop.

4.Tilting disc check valve have moderate sealing capability and can provide tight shutoff if the differential pressure across the disc is relatively large.

Figure Pressure Seal Tilting Disc Check Valve

FAQ

1.Q: What’s the brand of your company can supply ?

A:NSV or OEM service

2.Q:I want to know how to contact the person in charge.

A: When you call representative call number of company(86-577-67378616), sales team will receive your call if there is no special situation. If you let us know your inquiry, we will put you through to the person in charge. If you need a personal phone number, you have to receive it from the person in charge directly after phone call.

3. Q: What’s the valves warranty?
  A: Our valves warranty period should be 18 months from the date of shipment or 12 months after installation, whichever occurs first.

4. Q:How can I get a quote?

A: If you request quote by preparing the product spec you want to request specifically through “Contact us or Feedback” of homepage, we will send reply to you ASAP. If the contents of homepage are not available, you can inquire to us via phone(86-577-67378616) or fax(86-577-67372367).

5.Q:Is there have MOQ?

  A：No.we can accept 1set,but there have additional cost $150.00(process of export) if the order value within $2000.00.

We hope that in the future market, more and more quality Butt Welded Bw Tilting Disc Check Valve will be named as our brand so that we will become one of the leaders in the world market. We believe by maintaining long-term good cooperative relations with customers and pursuing greater benefits, a win-win situation can be achieved. We are based on the sense of responsibility, the overall concept and the sense of teamwork that we dare to assume, and hope to join hands with the industry to advance together.