Armstrong International B1669-4 Pressure Change Assembly Els PW 17895 Standardized Fitment: Features a round

Standardized Fitment: Features a round form factor and integrated bracket for immediate mounting

providing a normally closed fail-safe position through its robust spring return mechanism

Is the TST2311 exactly the same as the 100208834

The "L48" designation indicates the inclusion of the OPD 48 over-pressure device

The Raypak 800203B is the standard 3/4-inch ID gasket found in many atmospheric and digital commercial models

Armstrong International B1669-4 Pressure Change Assembly Els PW 17895 Standardized Fitment: Features a roundThe Armstrong International B1669 4 Pressure Change Assembly is a precision engineered internal component designed to restore the peak performance of your steam system. Featuring a 1 8" orifice, this assembly is vital for maintaining the mechanical integrity and discharge capacity of inverted bucket steam traps. It is fully compatible with a wide range of Armstrong models, including the 211, 310, 800, 811, TVS 811, 880, 881, 981, and EM Series.