Watts R119-04D Regulator 30067439-890 The 1/4" SAE connection must

The 1/4" SAE connection must be piped to the suction line after the bulb to ensure the valve senses accurately

specifically engineered for seamless integration with the MP909B series pneumatic actuators

provided the flow arrow points toward the boiler and there is sufficient clearance for the purge lever operation

or a worn bushing in the 0150P00004S

Watts R119-04D Regulator 30067439-890 The 1/4" SAE connection mustThe Watts R119 04D is a high capacity pneumatic pressure regulator engineered for demanding industrial air preparation. Featuring a 1 2" NPT female inlet and outlet, this diaphragm operated regulator is built with a rugged zinc housing and a balanced poppet design to ensure rapid response and pinpoint accuracy across a broad flow spectrum. It handles a maximum inlet pressure of 300 PSIG and provides a precise secondary pressure range of 5 to 250 PSI.