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This pneumatic thermostat is rated for a maximum operating pressure of 25 psi
As a direct replacement for CRDS08 and RSD-8 models
Fixed Pressure Safety: Pre-set at 125 psi to ensure precise emergency pressure relief without the need for field adjustment
It is primarily used in Modine HSB86 series hydronic heaters and compatible unit heaters requiring a 14-inch
the dual ball bearing construction is an essential upgrade over standard sleeve bearings
McDonnell & Miller 247-2 Water Feeder R-410A This pneumatic thermostat is ratedThe McDonnell & Miller 247 2 (Part Number 133800) is a heavy duty mechanical water feeder specifically designed for steam and hot water boilers requiring consistent cold water makeup. This unit features a built in No. 2 Switch, providing integrated Low Water Cut Off (LWCO) functionality with two snap acting SPDT switches. This configuration ensures that if the water level drops below a safe threshold, the burner circuit is interrupted while
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