McDonnell & Miller Snap Switch & Electronic Low Water Cut Offs
McDonnell & Miller offers two replacements for their now obsolete 150 series of Low Water Cut Offs (LWCO). The 150S utilizes snap switch technology for commercial and industrial low or high pressure boiler applications. In addition to optional Manual reset, McDonnell & Miller also offers the 150S-MD model which is designed to prevent nuisance burner shutdowns in low pressure applications. The 150E is an electronic version of the 150 which offers primary & secondary low water fuel cut-off protection and pump control for commercial and industrial steam boilers. These models offer constant set points and differentials as well as handy diagnostic features. The manual reset version meets the requirements of ASME Standard CSD-1.
Honeywell Mercury-free Pressure Limits & Controls
Honeywell's line of Pressure Limits & Controls offers mercury-free switching in a reliable pressure control offering modulation and safety features. Models available: (L91A, B & D) (L404F, V & T) (L4079A, B & W)
Honeywell Gas Pressure Switches
Honeywell's new line of gas pressure switches offer mercury-free switching with the reliability you need for your commercial or industrial applications. C437 Pressure Switches are pressure-actuated switching devices used in industrial gas system applications. Unlike previous mercury versions, the series 4 models have MicroSwitch snap switches to open or close a circuit on pressure rise or drop.C6097 Pressure Switches feature a compact design with easy connections that greatly reduce conventional piping & threading operations. The days of needing to install pressure switches on welded or threaded pipe tees are gone. Plus, the C6097 is reliable, helping you avoid callbacks.
Digital Solar Thermometers
The Weiss patented Digital Vari-angle Solar Thermometer maintains strict requirements for thermometers in hydronic applications in that they're self-powered and within 1% accuracy. And they need only 1 foot candle of light to operate! This product also offers the added feature of stem assemblies for direct replacement of their mercury.
