000 ohm sensors at 77

minimizing labor time during maintenance calls

The dual-range functionality provides precise setpoint adjustments

Failures are often caused by diaphragm wear

It is designed for use with preprinted circular charts and standard ink pen configurations

Spence Engineering D550 Pilot THPU32HP7Y 000 ohm sensors at 77The Spence Engineering D550 Pilot is a heavy duty, spring operated pressure pilot designed to interface with Type E and Type C main valves for high accuracy steam regulation. Constructed with a rugged cast iron body, this normally closed pilot is specifically engineered for secondary pressure control in steam heating systems and industrial vapor applications. It features a 5 50 PSI spring range, allowing contractors to field adjust delivery setpoints