Series 20
Check Valves
Overview
Semi-lug, flangeless bodied swing style design with externally adjustable spring assisted closure.
Offered in 2″ thru 30″
Class 150
Class 300
2”-12”, ANSI Class 150
Wafer Semi-Lug Single Disc External Spring Assist,
ANSI B16.1 & ANSI B16.47