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It includes a manual cut-out lever (Auto-Off) and a 2-way pressure release valve (unloader) with a 1/4-inch compression fitting to prevent motor starting under load
Installing a 120V element into a lower voltage system will result in inadequate heating and ignition failure
maintaining the pressure switch closure required for the ignition sequence
Heavy-Duty Stability: Nickel-chromium coils and corrosion-resistant mounting plates prevent sag and premature failure under high-demand cycles
this unit provides the flexibility needed for field adjustments
Hoffman Specialty 401485 Water Vent R-22 It includes a manual cut-outThe Hoffman Specialty 401485, or Model 78 Water Main Vent Valve, is a high capacity automatic air vent designed for efficient air elimination in hydronic heating and cooling systems. Engineered for closed loop hydronic systems, this vent features a 3 4" NPT connection and is built to withstand a maximum pressure of 150 PSI. Its primary function is to purge air from water mains and large distribution lines, preventing air bound system issues that lead
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