The Cycle Gard Model C153SS is a constant-pressure pump control valve with an added pressure setting of 70 psi. The corrosion-resistant, stainless steel valve body with NPT connections and heavy construction requires non-field adjustments. Non-closing and self-cleaning valve seat design supports heavy hanging loads of up to 3,400 lb, and fits in a 4-in. well casing. It is NSF/ANSI 372 certified and covered by a three-year warranty.