McDonnell & Miller Float SA91-60, Use With Series 93, 193, 94, 194

For residential, commercial and industrial low or high pressure boiler applications. For boilers of any steaming capacity. Monel bellows provides corrosion resistance. Float chamber with integral water column provided Snap action 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 - Integral conductance probes for additional levels and greater operating differential-Model 157S-RBP-MD - 1" or 1-1/4" NPT equalizing tapings - 1/2" or 3/4" NPT tapings ...

Safguard 450 Series Low Water Cut-Off W/Remote Mount Probe, 120V Burner circuit contacts open after 15 second delay in a low water condition. Delay prevents short cycling caused by momentary fluctuations in the boiler water level. Automatically reactivates burner circuit 30 seconds after water reaches the probe, allowing optional water feeder to raise water level above the probe. Made in the USA . Click for Instructions

McDonnell & Miller Series 51-2 Mechanical Water Feeder/Low Water Cut-off 51-2, #2 Switch For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) capacity with cold water feed. Quick-change replaceable cartridge valve and strainer. Optional features - No. 2 switch - Manual reset - Float block. Proportional feed action. Model 51 can be field upgraded with a No. 2 switch to add low water cut-off function. Maximum water supply pressure 150 psi (10. 5 kg/cm2). Maximum inlet water temperature 120°F (49°C). Maximum vessel pressure 35 psi (2. 5 kg/cm2). Made in ...

Safgard™ 600 Series Low Water Cut-Off W/Auto Reset, Commerical, 24V Interrupts power immediately in a low water condition. Automatically restarts burner on return of water level. Features test button, onboard indicating lights and easy to follow installation instructions. Model 1100 includes plug-in wire harness with labeled quick-connect terminals. Model 1100 is available with additional wiring harnesses for popular boilers. Made in the USA . Click for Instructions

For residential and commercial low pressure steam boiler applications. For boilers of any steaming capacity. For mounting in 2-1/2" NPT boiler side tapings. Insertion lengths available in 13/16 - 41/8" (30-105mm). Pack less bellows. Adjustable BX outlet for easy installation. Dual precision switches for dependable operation of the low water cut-off and an alarm or electric water feeder. Optional low voltage switches for self-generating mill volt circuits. Maximum steam pressure 20 psi (1. 4 kg/cm2). Made in the USA .