MCDONNELL & MILLER 150S-M-HD HEAD MECHANISM

McDonnell & Miller 172809, 150S-M-HD, Manual Reset Head Mechanism with Snap Switch Model # 150S-M-HD Series # Series 150S - 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 Used On 150SM, 150S-M, 172702 McDonnell & Miller 172809 model 150S-M-HD replacement head mechanism with snap-action switch assembly with manual reset repairs Series 150S-M and Series 157S-M low water cut-off pump controllers for steam boilers. Replacement head mechanisms can be installed without disturbing existing equalizing connections or disassembly of components, making repair simple and easy.