Flanged End Double Disc Check Valve

Flanged End Double Disc Check Valve

Overview

Double Disc Check Valves, also called wafer check valves are designed to be installed between ANSI 150, 300, 600, 900 or 1500LB flanges. These valves should not beinstalled between flanges that contain defects.

Prior to installation, the wafer ends and mating flanges should be inspected to ensure gasket surfaces are free of defects. The piping system must also be checked for proper alignment.
Double Disc Check Valves should never be utilized to realign an existing piping system. Our Dual Plate Check Valves are designed for steady flow conditions and can be installed in either horizontal orvertical (flow upwards) pipelines.

Specifications

1.Technical Data

Stem: Stainless Steel

Spring: Stainless Steel

Seat: EPDM, NBR, Stainless Steel

Size: DN40-DN600mm PN1.0-1.6MPa

Body: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel

Flange Connection: DIN, ANSI, BS, JIS, UNIVERSAL FLANGE

Disc: Ductile Iron with Nickel Coating, Ductile Iron with Nylon Coating, Stainless Stee 304/316l, Alu-Bronze

2. Product Features

Resilient Buna-N or EPDM Seat

Upper and lower PTFE thrust washers

Wafer body style fit between FF or RF flanges

Torsion springs assist valve closure, preventing flow reversal

Thrust washer reduce friction and wear of valve plate hinges

Dual plate valves give maximum strength with minimum opening time