Swing Check vs Dual Plate Check (WCB)

Swing checks give low ΔP on horizontal lines. Dual plate wafer checks are compact and spring-assisted for reduced slam.

RFQ the pattern that matches pump discharge dynamics — not habit.

FAQ

Which for pump discharge?

Dual plate when slam is a concern; swing when ΔP and horizontal install dominate.

Same class flanges?

Yes — match Class 150/300 to the pipe class.