When 24 volts is applied to the coil

crucial for mobile and industrial applications

Optimized Performance: Restores factory-spec combustion to prevent common boiler lockout errors and ignition failures

Code Compliance: Restores the factory-certified safety ratings required for RPZ backflow preventer certification and site inspection

Use the provided nut and washer to secure the 1-inch long shank through the mounting hole

Armstrong International B1669-1 Pressure Change Assembly Els PW 17895 When 24 volts is appliedThe Armstrong International B1669 1 Pressure Change Assembly (PCA) is a critical steam trap repair kit engineered specifically for inverted bucket traps. This assembly includes a matched 1 4" orifice, valve seat, and lever mechanism, providing a direct drop in solution for maintaining trap efficiency. Designed for Armstrong 811, 211, 310, TVS 811, 881, 981, and EM series traps, this PCA is calibrated for a 15 PSI maximum operating pressure. Utilizing