from 15 psig to 20 psig) triggers the internal switchover mechanism between the two dials

The P70DA-400 specifically features a manual reset lockout

maintaining system integrity across its 100

ensuring setpoint accuracy and stability

Direct Cross-Reference: Replaces Allanson 2721-668SF without kit modifications

Spirax-Sarco 55225 Main Valve Refrigerant from 15 psig to 20The Spirax Sarco 55225 is a high performance 1. 25 inch NPT 25 Series main valve designed for precise pressure and temperature control in industrial steam systems. This pilot operated diaphragm valve is engineered for durability, utilizing a stainless steel diaphragm to provide high lift and maximum flow capacity. As a fundamental component of the Spirax Sarco 25P pressure reducing valve assembly, the 55225 model ensures stable downstream pressure