mailbox
 

Wafer Type Non Slam Check Valve


Wafer Type Non Slam Check Valve


 Application
Nonslam check valves are used in wide variety of industries such as chemical, food processing pharmaceuticals,pulp & paper textiles power generation breweries, Refrigeration and air conditioning,any industries where fluid flows in pipes these valves are used in oil lines,process line.Hot and cold water systems,steam and condensate lines. Gas lines etc.
  Salient Features and Specialities Download Technical Specifications (PDF)
•

Spring closing arrangements for the prevention of reverse flow the pipelines.
•

These valves are general purpose valves that are stronger, lighter and smaller than conventional swing check valves and therefore, less expensive to install and maintain
•

Suitable for higher pressure /temperature (up to 4000C)
•

Compact design for simple installation between wide ranges of flange types.
•

It can be mounted in any plane/direction.
•

Extremely low opening pressures.
•

Spring assisted silent closing.
•

Available sizes 15mm to 100mm,suitable for PN6-PN40 and 150/300.
•

Weight and Dimension are same for class 150 & class 300 valves.
•

Valves are self-centering type.
•

Zero leakage for soft seated valves.
•

The maximum permissible leakage rate shall be 3 cubic centimeters per inch of nominal pipe size for metal-seated  valves.
• This NRVs are made completely from bar stock, Non-magnetic.
Material of Construction
Body :

AISI 316,WCB.
Disc :

AISI 316.
Spring :

standard AISI 316 Spring.
Nimonic :

for high temperature up to 400c
Disc Seat :

Standard ,EPDM/Nitrile soft seated for water –silicon/viton software disc.
Seating face :

for oil & gases.

General Construction
• Metal to Metal  seated construction
• Soft seated (EPDM/Nitrile /Silicon /Viton ) construction
Presure Rating : PN 40.
Flange standard : 1.
    BS 10 table D, E * & H
2.
    DIN: PN6. 10, 16, 25, 40.
3.
    ANSII50 and 300
Operation

    Non slam check valves are opened by the pressure of the fluid and closed by the spring as soon as flow ceases and before reverse flow occurs.
Installation

   Non Slam check Valves Simply fit between two pipes flanges (fig 2). Standard gaskets are used on either side of the valve together with longer bolts or studs.

 
 
Designed & developed by