This Water Source Plastic Sump Check Valve fits 1-1/2 in. pump discharge threads. It is recommended to replace your check valve every time you replace your sump pump. This check valve is constructed from durable thermoplastic material.
- Prevents backflow of water into sump basin which prevents pump from cycling on and off too often
- 1-1/2 in. male NPT thread connects directly into sump pump discharge
- For permanent installation, 1-1/2-in PVC slip coupler can be PVC welded directly to check valve
- For temporary installation, flexible discharge hose can be clamped to the 1-1/4-in barbs
- Unique valve body allows for nearly 100% flow
- Swing style flapper, not spring loaded
- Not for use with well pumps or other potable water applications