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and 3007 series unions
The drop-in design allows for immediate installation without field modifications
making it a critical boiler safety control for maintaining the operational integrity of heating systems
this specific part is designed for select 6-cell models
Spirax-Sarco 55226 Main Valve Els PW 17895 and 3007 series unionsThe Spirax Sarco 55226 is a rugged 1 1 2" NPT main valve engineered for precision high capacity steam regulation. As the foundational component of the 25 series pilot operated regulator system, this cast iron valve body is rated for up to 250 psi and 450F, making it a standard for heating and process steam applications. Its normally closed design ensures a positive ANSI FCI 70 2 Class IV shut off, preventing steam leakage during dead end service. This
