Spence Engineering 05-05007-00 Silver Spring D-Pilot 1-10/3-20 PSI

The Spence Engineering 05-05007-00 Spring is a calibrated control spring used in pilot-operated pressure regulating assemblies to set low-range delivery pressure settings. It is color-coded silver for identification and is designed to operate within dual pressure ranges of 110 PSI and 320 PSI depending on configuration. The spring is fitted inside the pilot mechanism to provide controlled tension for accurate pressure adjustment during operation. In HVAC systems, it is used in steam and fluid control regulator assemblies where precise low-pressure regulation is required for stable flow control in connected heating and process equipment.