Spence Engineering A85 Pilot Refrigerant the SPDT relay provides both

the SPDT relay provides both Normally Open (NO) and Normally Closed (NC) contacts

The integrated test switch allows contractors to verify circuit integrity without draining the entire system

9% pure UNS C12200 grade copper

Built to professional standards

Compact Envelope: The 1/2" NPT footprint allows for easy installation in tight mechanical closets or terminal unit enclosures

Spence Engineering A85 Pilot Refrigerant the SPDT relay provides bothThe Spence Engineering A85 Pilot is a high performance air adjusted pilot designed for industrial steam pressure regulation where remote adjustment is required. Built with a rugged cast iron body and stainless steel trim, this pilot is engineered to withstand the rigors of heavy duty boiler rooms and district heating plants. It features a unique 3 7 8: 1 air ratio, allowing technicians to use low pressure air signals to control high pressure steam