Rptfe Seat Wafer Dual Check Valve

Overview

Check Valve is applicable for various pipelines with nominal pressure of PN1.0MPa~42.0 MPa,Class150~2500 and nominal diameter of DN15~1200mm,NPS1/2-48 and working temperature of -196~540℃ to be used for protecting from medium back flowing. The different materials selection can apply to the medium involving water, steam, oils, nitric acid, strong oxidizing medium and urea etc.

Technical Data

Stem: Stainless Steel

Spring: Stainless Steel

Seat: EPDM, NBR, Stainless Steel

Size: DN40-DN600mm PN1.0-1.6MPa

Working temperature:-196℃~+560℃

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

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

Main Parameter Specification

BW end Dimension：ASME B16.25

Face to Face and End to End：ASME B16.10

Pressure-temperature ratings：ASME B16.34

Wall Thickness Dimension：API 600,BS 1868

Inspection and Test：API598,API600 or API 6D

Design and Manufacture：Cast Steel Check Valve to BS 1868,ASME B16.34,API 6D