JIS A216 Wcb PTFE Plug Valve

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  NSV CN7M Plug valves are valves with cylindrical or conically tapered "plugs" which can be rotated inside the valve body to control flow through the valve,it superior corrosion resistance to nitric acid of any concentration at 60degC and lower,and to heated dilute oxide.it chemical processes handling acetic acid alkali,dilute hydrochloricacid,dilute hydrofluoric acid,dilute sulphuric acid and phosphoric acid,also for oil refining.

• Applicable Standard
  Design Standard:     API 599,6D, ASME B16.34
  Face to Face:          ASME B16.10
  End Flange:             ASME B16.5
  Butt welding Ends:    ASME B16.25
  Inspection and Test: API 598, API 6D

• Products Range
  Size: 1/2" ~14" (DN15 ~ DN350)
  Rating: 150lb ~ 900LB

      Body Material: Alloy20(A351 CN7M)
      Plug Material: Alloy20(A351 CN7M)
      Sleeve(seat) Material: PTFE
      Operation : Lever, Gear, Electric, Pneumatic, Hydraulic

• Design Features
  Reduced port or Full port
  Rugged,Heavy-Duty Body
  Large port opening

      Non-Lubricated

STRUCTURAL FEATURES

1.Construction of Sleeved Plug Valves

  Basic structure is plug, sleeve,body. Sleeve is inserted and encaged inside the body. Tapered plug is inserted onto the sleeve.The sleeve is acting as a soft seat.And completely surrounds plug creating areal sealing surfaces.Also not permitting any dead space in the flow path. Plug is rotating 90 degree. When it is aligned with the body port, flow is open. When the plug is rotated so that plug port is perpendicular to the body port the flow is blocked.The media kept in the plug while at closed position, will be contained in the plug port only,and when the valve is open again,the flow will flush the out. And no remains.

  PTFE is an plastic material, even though they are high grade engineering material. All plastics are subject to cold flow.; at higher temperature volume increase,escape to the low pressure area and don’t get back to its original position even after removal of temperature, pressure. But, if they get confined , they would not cold flow. Upper boundary and lower boundary, and 360 port lips.Recessed wall is acting as absorption of inflated volume of PTFE when volume is increased due to temperature.

  Plug is tapered. Monolithic design.Wedge action. Lowering 1 mm will result in side pressure vectors.Adjustable. Solid not unstable as pressure dependent.Materials can be upgraded for the plug alone to be better resistive than the body corrosion rate.

  Sleeve is also tapered to accepted the configure of plug. They are snuggly fit into the void space created by upper, lower and metal port lips.The PTFE materials are rigid enough, resilient enough, elastic enough. Corrosion resistant.Temperature, pressure.For highly radioactive environment, higher temperatures,several different materials are used.

2.Zero Leakage

  The zero leakage stem sealing is achieved by the Threefold Stem Sealing System.
The primary seal is provided by the sleeve. The sealing is so tight that no leakage can be observed even without a valve cover. The secondary and the tertiary seal (top seal package) are provided by a delta ring and a diaphragm made of RTFE ( Rein forced Teflon). The sealing is also so tight that no leakage can be observed even with out a sleeve.

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.

For many years, we have been specializing in the production of JIS A216 Wcb PTFE Plug Valve. We believe you will benefit from our professionalism soon. Our company takes strong technical force and high-quality products as the principle of unremitting progress.