V47N) on the valve nameplate before attempting service

always verify the valve series nameplate matches the 302-338 specification for temperature limits

reducing onsite labor time for service technicians

this replacement regulator spring offers a reliable solution for recalibrating Model 143-80 units to meet specific jurisdictional utility standards or equipment manifold requirements

This 50/60 Hz unit is a direct replacement part for several QMark and Berko MUH heater series

Carrier KK71JY140 O-Ring 318172-701 V47N) on the valve nameplateThe Carrier KK71JY140 O Ring is an essential sealing component designed for heavy duty HVACR applications, specifically within large scale centrifugal chillers and liquid refrigeration systems. With a precision engineered 14. 475" ID (Inner Diameter), this elastomeric seal is manufactured from high grade synthetic materials to ensure chemical compatibility with common refrigerants and lubricants, preventing system leaks and pressure loss. Technicians