The Model 141-1 Check Valve uses a spring-loaded poppet that will allow flow in one direction only. It is the primary component used on valves with a reverse flow check function. Flow is in the direction of the arrow on the check valve body.
The Model 141-1 Check Valve is shown on OCV Valve Schematics as:
|EXAMPLE: Shown here on a MODEL 94-3 Check Valve.|