Fail-Safe Spring Return: Automatically drives the valve to a normally closed position during power failures to protect against uncontrolled flow

The 5/16-inch by 2 1/8-inch flat shaft is built to standard industry tolerances for secure hub mounting

facilitating faster field repairs

offering superior lock-up characteristics and sensitive regulation at extremely low flow rates

Do I need special tools to replace the first check seat

York 011-00560-000 Oil 322055-301 Fail-Safe Spring Return: Automatically drivesThe York 011 00560 000 is an OEM specified Type K refrigeration oil formulated for high capacity industrial systems. This Polyolester (POE) lubricant is specifically engineered to meet the lubrication requirements of York YK centrifugal chillers, M Series compressors, and open reciprocating units. Unlike standard mineral oils, this synthetic compressor oil provides superior chemical and thermal stability, ensuring consistent lubrication under extreme