HONEYWELL PROPORTIONING PRESSURETROL 0-15PSI

Pressure Range 0 to 15 PSI Temperature Range 32 to 150 F Max Pressure 25 PSI Min Pressure Differential 1.5 PSI Switch Operation Modulating Pressure Differential 1.5 PSI to 12 PSI Maximum Pressure Differential 12 PSI Features • May be used with steam, air, noncombustible gases, or other fluids noncorrosive to brass or phos-bronze (300 psi model) bellows. • When used with steam boilers, a steam trap (siphon loop) is recommended. • L91B,D models have adjustable proportioning (throttling) range to allow selection of desired pressure control range. • Adjustments made with screws on case top. • Large, easily-read scaleplates in both U.S. customary (oz/sq. in., psi, or in. Hg) and metric (kPa, MPa, or mm Hg) units. • Steel case with clear plastic cover to observe pressure settings and potentiometer action. • Fitting with 1/4 -18 NPT threads allows rapid installation. • Surface mount with screws through knockout holes in case back. L91 Proportioning Pressuretrol Controllers are Series 90 Modulating Pressure Controllers that provide direct control of modulating motors or valves used on automatic burners or steam heating systems.