Thermoplastic [PVC, CPVC, Glass-Filled Polypropylene, or PVDF (Kynar)] solenoid valve, [ 1/4" through 1"] NPT threads, is to be of the direct acting, shielded core design. No minimum pressure nor pressure differential is required for operation. The solenoid valve is to have two (2) primary liquid sealing components, a PTFE bellows dynamic seal with a [EPDM or Viton] poppet seat and a secondary elastomer diaphragm back-up seal of the same material as the seat. The valve is to have Fail-Dry advance warning vent, which permits the valve to continue operating until a scheduled maintenance can be planned. The warning vent is a 1/8" NPT port so that thermoplastic tubing, if desired, can be piped to a remote safe location in the event of concern with leakage of dangerous liquids or vapors. Coil shall be [W24 watt coil with Z-COOL DIN connector which reduces wattage by approximately 75% after actuation to reduce heat and save energy -or- R24 coil equipped with a rectified 1/2" DIN connector]. ll units are to be 100% individually tested at the factory. As manufactured by Plast-O-Matic Valves, Inc., Cedar Grove, NJ.