Spence Engineering D20150 Pilot 30067439-890 this HVAC mounting hardware ensures

this HVAC mounting hardware ensures precision alignment of controllers within mechanical casings and equipment frames

this control is rated for both 120 VAC and 240 VAC applications

The fail-safe spring return mechanism ensures that the valve returns to its closed position upon power loss

and WH-502C units

Maintenance Efficiency: Features a union solder connection that allows the valve body to be removed for service without cutting existing copper pipe

Spence Engineering D20150 Pilot 30067439-890 this HVAC mounting hardware ensuresThe Spence Engineering D20150 Pilot is a heavy duty, spring operated pressure reducing pilot designed for precise steam pressure regulation when paired with a Type E or Type C main valve. This cast iron pilot features a 20 150 PSI spring range (designated by the black spring), making it a standard choice for high demand industrial and commercial heating systems. Built with a normally closed, packless construction, the D20150 ensures accurate pressure