Spence Engineering A85 Pilot Refrigerant The integrated test switch allows

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

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

Built to professional standards

Wide Compatibility: Specifically engineered for York

Spence Engineering A85 Pilot Refrigerant The integrated test switch allowsThe 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