Pay in 4 interest-free payments of $102.69 Learn more
Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
What air quality is required for long-term reliability
How do I know if the ignition cable needs replacement
Bronze Body Construction: High-grade alloy resists de-zincification and scaling in closed-loop systems
Verify the wiring terminal count on the existing valve head before installation
Spence Engineering D550 Pilot 30067439-890 What air quality is requiredThe Spence Engineering D550 Pilot is a heavy duty, spring operated pressure pilot designed to interface with Type E and Type C main valves for high accuracy steam regulation. Constructed with a rugged cast iron body, this normally closed pilot is specifically engineered for secondary pressure control in steam heating systems and industrial vapor applications. It features a 5 50 PSI spring range, allowing contractors to field adjust delivery setpoints
US$ 29.99
US$ 1349.50
US$ 49.00
US$ 5947.50
