A high temperature return unit designed for pumping water temperatures up 300°F. Unit reduces flash steam losses and conserves energy by eliminating the need for cooler, traps, and flash tanks in a steam system. Operating costs are lower since condensate does not need to be reheated as much as in a vented system. A standard black steel receiver with dished heads is ASME code-stamped for 125 psig. Unit can handle a wide range of flows and pressures. Units are elevated style and designed for capacities from 2,500 to 40,000 lbs per hour with tank sizes ranging from 66 gallons up to 190 gallons; however custom-sized tanks can be made for applications outside the standard tank dimensions.
Units are available in either simplex or duplex configurations with a variety of options including gauge glass, thermometer, control panel; motors are 3500 RPM, single or three phase. Unit equipped with bronze-fitted, two-foot, NPSH Model P pumps typically fitted with industry standard motor and with mechanical seals rated for temperatures up to 300°F. Higher temperature seals and special faces available upon request.
A HT-PMV unit is equipped with a proportioning motorized valve (PMV). This valve is located in the discharge piping; it balances the water discharged by the continuously running pumps with the returning condensate input to the tank in order to maintain a constant water level in the tank. The valve closes when the water level in tank is low to prevent high pressure in unit from blowing through the pumps. A HT-PMV is ideal for use on a Steam Absorption Chiller because it improves the efficiency of the absorber by eliminating need for the trap.