McDonnell & Miller Series 150SLow Water Cut-Off/Pump Controller 150S-MD Maximum Differential

For commercial and industrial low or high pressure boiler applications. For boilers of any steaming capacity. Monel bellows provides corrosion resistance. Snap action switches for high temperature service – 1 Single pole, single throw switch for pump control – 1 Single pole, double throw switch for low water cut-off and alarm actuation. Optional features – Manual reset – 2 Single pole, single throw switches – 2 Single pole, double throw switches – Float block – BSPT threads. Maximum pressure 150 psi (10. 5 kg/cm2). Made in the USA.