The M&M Series PS-804 low water cut-offs are precision engineered to protect hot water boilers from low-water conditions and provide burner cut-off in the event of a major loss of water, says the company. In addition to providing continuous protection against low-water conditions, the company says its Series PS-804 turns off the burner every 10 min to check the proper water level for a 90-sec interval. It says this feature allows foam in the boiler to dissipate, ensuring accurate water level sensing.

— McDonnell & Miller, a unit of ITT Industries

Chicago, IL