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Lined Valves

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Lined NRV Valves

Lined NRV Valves have Body of Ductile Iron as per ASTM A 395 Gr-60-40-18 with Ball Made up of Solid PTFE.

In This NRV Valve, under normal flow the valves solid PTFE ball is pushed away from its seat and fluid flows through the valve, in a backwards flow condition the ball is pushed firmly back into its seat and prevents flow through the valve stopping process contamination etc.

The valve has a 2 piece design with PFA/FEP lined ductile iron body and stainless steel fasteners. The PFA liner is securely locked in to its housing with T slots.

PFA/FEP Lining offers highest corrosion resistance. Minimum lining thickness of 3mm, lining locked by multiple locking grooves. Ball is made of solid PTFE.

2 piece body design high stability rigidity eliminating potential leak path.

Full port design minimizes pressure losses and increases flow capacities thus reducing energy and pumping costs.

It can be installed either vertically or horizontally depending on the type of application.

  • Size: 25 NB TO 80 NB.
  • Temperature: FEP -Max 180 Degree Celsius PFA Max: 200 Degree Celsius.
  • Flange Connection: ANSI B 16.5.
  • Face to Face: ANSI B 16.10
  • Spark Testing of PFA/FEP at 15 KVA.
  • Hydro Body Test at 15 kg/cm2.
  • Hydro Seat Test at 10 Kg/cm2.
  • Leak Test as per API 598.

Material is supplied with Material Test Certificate and Internal Test Reports.