AMES 7015421 2000SS/3000SS LOW FLOW #2 CHECK 2 1/2" - 4"
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THIS IS THE #2 CHECK FOR THE 2000SS OR 3000SS 2 1/2", 3", 4" BUT IT IS CALLED A LOW FLOW CHECK MEANING IT HAS A LOWER SPRING VALUE CLOSER TO 1.0 TO OBTAIN BETTER FLOW RATES ON FIRE SYSTEMS.