The Swing Check Type Non Return Valve prevents water from returning to the source after being pumped away, the thread is 5/4" (1 1/4") BSP female.
Size: 5/4" (1 1/4") BSP FEMALE x FEMALE;
Max. Static Pressure: 1,0MPa (10 bar);
Max. Working Temperature: +120C;
Detailed dimensions: Refer to table sheet.
better design than previously. No screw to come loose like the last one which wrecked my well pump by falling out back down the feed pipe.
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