Heavy-duty solenoid valves feature true union end connections and are designed so no pressure differential is required for reliable operation. Unique coil design results in lower coil operating temperatures and a 100% continuous duty rating. Molded polyester housing protects the coil assembly and electronics from harsh corrosive environments, and an easy to replace one-piece seal cartridge and plunger assembly allow the valve to quickly be put back in service. 115 VAC. FPM Seals. Operate with up to 40 PSI of backpressure and up to 120 PSI of inlet pressure. No minimum pressure requirements.