WS1 Spacer Stack Assembly EPDM - Essential internal component for Clack WS1 control valves, includes seals and spacers for proper valve function. Used with pistons V3011 and V3174.

Compatible with Clack WS1 valves. Material: EPDM for durability and chemical resistance. Dimensions: Standard for 1" valves. Weight: ~0.5 lbs.