Industrial-Grade Durability: The zinc plated steel construction prevents oxidation and surface degradation in harsh mechanical rooms

How can I verify if my S1-025-35381-000 is faulty

While this is a York S1-024-20043-700 OEM part

For contractors performing field pressure adjustments

315602 is identical to 315602/U

Maxitrol R9110-512 Spring Industrial-Grade Durability: The zinc platedThe Maxitrol R9110 512 is a field proven blue spring engineered for precise pressure regulation within the 5 12" WC (water column) range. Designed specifically for use with high capacity RV91 and 210E Series regulators, this component is essential for technicians performing regular service or manifold pressure adjustments on commercial gas systems. As a genuine Maxitrol replacement part, it ensures your straight thru flow (STF) regulators maintain