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- Caleffi 142 series low lead manual balancing valves are used to measure and adjust the fluid flow rate in hydronic or plumbing circuits. Turning the knob moves a plug within the fluid stream which varies the flow rate. The flow rate is determined from the pressure drop created across the two test ports as the fluid passes the adjustment plug. The pressure drop value is measured by a differential pressure meter connected to the pressure test ports. The valve design is variable orifice with pressure ports located upstream and downstream of the adjustment plug. A memory stop feature allows the valve to be closed, and later reopened to the original set position. Optional insulation shells are available, purchase separately.
Caleffi Variable Orifice Balancing Valve, Series: 142, 1/2 in Nominal, FNPT, 232 psi, 14 to 250 deg F, Media: Water/Glycol, Adjustable Knob Actuator, 2-9/16 in Inlet to Outlet Length, 2-1/2 in Top to Inlet Center, Brass Body, Brass Trim, EPDM Hydraulic Seal
- Memory stop feature
- Characterized plug for smooth adjustment
- Body MaterialBRASSEnd StyleFNPTNominal Size1/2 inActuator TypeControl KnobInlet to Outlet Length2-9/16 inManufacturerCaleffiManufacturer #142241AMediaGlycol / WaterPressure Rating232 psiSeries142Softgoods MaterialEPDM SealTemperature Rating14 to 250 deg FTop to Inlet Center2-1/2 inTrim MaterialBRASS