Hydronics
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Caleffi Series 553 Automatic Filling Units 1/2"Union NPT Male Inlet with 1/2" NPT Female Outlet
Caleffi Series 553 Automatic Filling UnitsThe AutoFill™ automatic filling valve is a pressure reducing valve with a compensating seat, an inlet filter, a shut-off valve and a check valve. It is installed on the water inlet piping in sealed heating systems, and its main function is to maintain the pressure of the system to a preset value, automatically filling up with water as required. This valve has been designed as pre-adjustable, which means it can be adjusted at the required pressure value before charging the system. After installation, during the filling or topping-off phase, the water feed will stop automatically when the set pressure is reached. There are no levers to flip or valve to close. Preassembled with the backflow preventer, it features an atmospheric vent which is designed to protect drinking water systems from return flow, caused by back-siphoning or backpressure, of contaminated fluids. The 573 series has been specifically certified to standards CSA B64.3 and ASSE 1012.$50.39 -
Caleffi Series 521 MixCal 3-Way Thermostatic Mixing Valve with adapter
Caleffi MixCal 3-Way Thermostatic Mixing ValveAdjustable thermostatic and pressure balanced mixing valve for point of distribution in domestic water systems and radiant hydronic heating systems. Low-lead brass body. Internal anti-scale materials. Locking set point knob. Max. working pressure: 200 psi. Max. inlet temperature: 200ºF. Adjustable range: 85—150ºF. Gauge scale: 30—210ºF. Gauge accuracy: ± 6ºF. Gauge dial: 2" diameter. ASSE 1017 Listed. Lead Plumbing Law Compliance: (0.25% Max. weighted average lead content). Lead Plumbing Law Certified by IAPMO R&T.$119.71 -
Caleffi Series 680 Universal PEX Fittings ASTM F876 Standard
Caleffi Series 680 Universal PEX Fittings680 series fi ttings are compatible with any ASTM F876 single layer PEX. Max. working pressure: 150 psi. Working temperature for ASTM F876 PEX piping: -41—180°F.$4.92 -
Caleffi Discal Series 551 Air Separators Brass Sweat
Air separator. Brass body. Glass reinforced nylon internal element. ½" NPT female bottom thread. Max. working pressure: 150 psi. Working temperature range: 32—250°F.In heating and air conditioning control systems, the circulation of water containing impurities may result in rapid wear and damage to components such as pumps and control valves. It also causes blockages in heat exchangers, heating elements and pipes, resulting in lower thermal efficiency within the system. The dirt separator separates off these impurities, which are mainly made up of particles of sand and rust, collecting them in a large collection chamber, from which they can be removed even while the system is in operation. This device is capable of efficiently removing the smallest particles, with low head loss.$91.57 -
Caleffi Series 6563 Twistop Thermoelectric Actuator 24VAC Manual Twist Open
Twistop Thermoelectric Actuator 24VAC Manual Twist Open w/green open indicator, Includes 36" Leads and Built-in End SwitchTwisTop™ thermo-electric actuator for use with return manifolds. Twist the top to manually open. Power supply: 24 V AC/DC. Initial current draw: 800 mA. Power consumption: 3 W. Rating of micro-switch contacts: 5A (24 V). 31.5" wire lead connection.$60.02 -
Caleffi Universal Flow Switch
Universal Flow Switch for heating systems. 1" NPTM, Brass body, Suitable for 1" to 8" pipe. UL listed.Universal Flow Switch for heating and air conditioning systems. Suitable for 1" to 8" pipe size. Working pressure: 150 psi. Working Temperature: 250 F. Minimum Flow: 5.7 GPM. Rating of switch contacts : 5A. CE, cUL, NEMA Type 5, IP 54$121.97 -
Caleffi Pressure/Temperature Gage for Boilers with 3 1/8" Dial size
Caleffi Pressure/Temperature Gage for Boilers with 3 1/8" Dial sizeTridicator dual pressure / temperature gage for boilers. Dial size: 3 1/8". Pressure range: 0—75 PSI. Temperature range: 60—320 F. ¼" NPT rear probe.$16.73 -
Caleffi Series 521 Mixcal Three Way Mixing Valve Sweat
Caleffi Series 521 Mixcal Three Way Mixing ValveThe thermostatic mixer is used in systems producing domestic hot water or in radiant panel heating systems. Its function is to maintain the temperature of the mixed water supplied to the user constant at the set value when there are variations in the supply conditions of the incoming hot and cold water. The valve has been specifically certified to ASSE 1017.$88.25 -
Caleffi Series NA100 3/4" Sweat Tail Piece for use with 1" Union
Caleffi 3/4" Sweat Tail Piece for use with 1" UnionTail piece. Low lead brass$5.85 -
Caleffi 573 Series Backflow Preventer and AutoFill Assembly 1/2" Sweat Union Inlet Dual Check Backflow Preventer plus Automatic Boiler Feed Valve with 1/2" NPT Female Outlet
Caleffi 573 Series Backflow Preventer and AutoFill AssemblyPre-adjustable automatic filling valve with backflow preventer. Brass body. Max. inlet pressure: 175 psi. Max. working temperature: 150°F. Setting pressure range: 3—60 psi. Preset outlet pressure: 15 psi.$84.75