The BDC Series Bi-Directional Check Valve Permits a differential flow in both directions. The free flow direction permits flow in excess of 1,000 liters a minute. The controlled flow direction with a pressure differential of 5 PSIG or more has a flow less than 1 liter a minute. An umbrella shaped performance flow disc allows for bi-directional flow to equalize as the pressure bias across the umbrella stabilizes.
