Wafer Check Valve

Wafer check valves are dual plate/disc/door, spring loaded, featured retainerless design to avoid the possibility of leakage through body. Wafer check valves with retainer plug is available upon request. Wafer check valves are designed to API 594.

Dual Plate Wafer Check Valve, Retainerless

Horizontal/Vertical installation

Unlike most traditional swing check valves, Wafer check valves are ideal for both horizontal and vertical pipeline installation.

Dual Plate Check Valve, Lug Type, Spring Loaded

Retainerless Design

Dual plate wafer checks valve are supplied retainerless as standard. Our patented design does not have any threaded plugs in the pressure boundary and totally eliminates the potential leak path to atmosphere. This design meet fugitive emission control.

End Connections

Dual plate check valves are offered as retainerless in wafer, lug, flanged, hub end, butt-weld end and thread end body style.

Wafer Style - Wafer style, inserted between mating flanges with studs spanning entire length
Wafer Lug - Lug design with threaded holes bolted from each end/with through-bolt holes to protect studs
Double flanged - Double flanged design with valve flanges bolted to individual like flanges

Double Flanged Dual Plate Check Valve, Spring Loaded

Inherently fire safe design

All Relia Wafer check valves are inherently fire safe due to the valve design, material and construction. In case of fire, both resilient seat and metal seat valves provide metal to metal sealing performance.

Light weight and reduced size

80% - 90% weight reduction compared to full body swing check valves. Simplifies piping, optimizes space utilization, and lowers installation costs. The compact design minimizes the distance between flanges and is easily installed between all flanges.

Low cracking pressure and overall pressure loss

Alleviates water hammer and resulting damaging effects. Relia wafer check valves provide more flow and lower pressure drops than conventional Wafer Check Valves.

Standard

Design: API 594/API 6D
Test: API 598

Dual Plate Wafer Check Valve Drawing

Standard Material List

Body Material

Carbon steel, stainless steel, duplex steel, al bronze, inconnel

Seat Material

Dimensions & Weight

Wafer Dual Plate Check Valve Dimension & Weight, Class 150

Wafer Dual Plate Check Valve Dimension & Weight, Class 300

Wafer Dual Plate Check Valve Dimension & Weight, Class 600

Wafer Dual Plate Check Valve Dimension & Weight, Class 900

Wafer Dual Plate Check Valve Dimension & Weight, Class 1500

Wafer Dual Plate Check Valve Dimension & Weight, Class 2500