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Search results for 'Tankless water heaters'

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  1. Caleffi Series 521 Mixcal Three Way Mixing Valve Sweat-1"

    Caleffi Series 521 Mixcal Three Way Mixing Valve Sweat-1"

    Adjustable, anti-scald thermostatic mixing valve Series 521 Adjustable 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 200F Adjustable Range: 85-150F ASSE 1017 Listed. Lead Plumbing Law Compliance: (0.25% Max. Weighted Average Lead Content) Lead Plumbing Law Certified by IAPMO R&T.
    The 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.
    $105.14

  2. Caleffi Series 5213 Scald Protection Three Way Mixing Valve Sweat-3/4"

    Caleffi Series 5213 Scald Protection Three Way Mixing Valve Sweat-3/4"

    Caleffi Series 5213 Scald Protection Three Way Mixing Valve
    Adjustable, anti-scald thermostatic mixing valve. The 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.
    $92.18

  3. Caleffi Series 553 Automatic Filling Units 1/2"Union NPT Male Inlet with 1/2" NPT Female Outlet

    Caleffi Series 553 Automatic Filling Units 1/2"Union NPT Male Inlet with 1/2" NPT Female Outlet

    Caleffi Series 553 Automatic Filling Units
    The 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

  4. Caleffi Discal Series 551 Air Separators Brass NPT

    Caleffi Discal Series 551 Air Separators Brass NPT

    Air separator with automatic ½" check valve (code 561402A) to mount expansion tank on bottom thread. Brass body. Glass reinforced nylon internal element. 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.
    $82.89

  5. Caleffi 548 Series Hydro Separator-1" NPT Brass Female Union w/Insulation

    Caleffi 548 Series Hydro Separator-1" NPT Brass Female Union w/Insulation

    Hydro Separator available in 1"-2" NPT & Sweat Unions. MAX operating pressure: 150 psi. Temperature range with insulation: 32-230 F. Medium: Water & Non-Hazardous Glycol solution. MAX percentage glycol: 50%.
    Series 548 Hydro Separator This device consists of several different functional components, each meet specific requirements, typical of the circuits used in heating and air-conditioning systems. • Hydronic separator: To keep connected hydronic circuits totally independent from each other • Dirt remover: To permit the separation and collection of any impurities present in the circuits. Provided with a valved connection with discharge piping. • Automatic air vent valve: For automatic venting of any air contained in the circuits. Provided with a valved connection for maintenance purposes. The hydronic separator should be sized according to the maximum flow rate value at 2" 37 the inlet. The selected design value must be the greatest between the primary circuit and the secondary circuit. When a single system contains a primary production circuit, with its own pump, and a secondary user circuit, with one or more distribution pumps, operating conditions may arise in the system whereby the pumps interact, crating abnormal variations in circuit flow rates and pressures. The hydronic separator creates a zone with a low pressure loss, which enables the primary and secondary circuits connected to it to be hydraulically independent of each other; the flow in one circuit does not create a flow in the other if the pressure loss in the common section is negligible. In this case, the flow rate in the respective circuits depends exclusively on the flow rate characteristics of the pumps, preventing reciprocal influence caused by connection in series. Therefore, using a device with these characteristics means that the flow in the secondary circuit only circulates when the relevant pump is on, permitting the system to meet the specific load requirements at that time. When the secondary pump is off, there is no circulation in the secondary circuit; the whole flow rate produced by the primary pump is by-passed through the separator. With the hydronic separator, it is thus possible to have a primary production circuit with a constant flow rate and a secondary distribution circuit with a variable flow rate; these operating conditions are typical of modern heating and cooling systems.
    $393.41

  6. Caleffi 548 Series Hydro Separator

    Caleffi 548 Series Hydro Separator

    Hydro Separator available in 1"-2" NPT & Sweat Unions. MAX operating pressure: 150 psi. Temperature range with insulation: 32-210 F without insulation: 32-250 F. Medium: Water & Non-Hazardous Glycol solution. MAX percentage glycol: 50%.
    Series 548 Hydro Separator. This device consists of several different functional components, each meet specific requirements, typical of the circuits used in heating and air-conditioning systems. • Hydronic separator: To keep connected hydronic circuits totally independent from each other • Dirt remover: To permit the separation and collection of any impurities present in the circuits. Provided with a valved connection with discharge piping. • Automatic air vent valve: For automatic venting of any air contained in the circuits. Provided with a valved connection for maintenance purposes. The hydronic separator should be sized according to the maximum flow rate value at the inlet. The selected design value must be the greatest between the primary circuit and the secondary circuit. When a single system contains a primary production circuit, with its own pump, and a secondary user circuit, with one or more distribution pumps, operating conditions may arise in the system whereby the pumps interact, creating abnormal variations in circuit flow rates and pressures. The hydronic separator creates a zone with a low pressure loss, which enables the primary and secondary circuits connected to it to be hydraulically independent of each other; the flow in one circuit does not create a flow in the other if the pressure loss in the common section is negligible. In this case, the flow rate in the respective circuits depends exclusively on the flow rate characteristics of the pumps, preventing reciprocal influence caused by connection in series. Therefore, using a device with these characteristics means that the flow in the secondary circuit only circulates when the relevant pump is on, permitting the system to meet the specific load requirements at that time. When the secondary pump is off, there is no circulation in the secondary circuit; the whole flow rate produced by the primary pump is by-passed through the separator. With the hydronic separator, it is thus possible to have a primary production circuit with a constant flow rate and a secondary distribution circuit with a variable flow rate; these operating conditions are typical of modern heating and cooling systems.
    $393.41

  7. Grundfos UPS15-55SFC 3-Speed Stainless Steel Circulator Pump

    Grundfos UPS15-55SFC 3-Speed Stainless Steel Circulator Pump

    Grundfos UPS15-55SFC 3-Speed Stainless Steel Circulator Pump w/ IFC, 1/8HP, 115V
    Grundfos UPS15-55SFC is a 1/8HP, 3-speed Stainless steel Circulator Pump with removalble Integral Check Valve and flanged connections. 3 speeds of the Grundfos UPS15-55SFC model make this pump very versatile and allow to match the system's requirements by adjusting the speeds (Low/Med/High), thus optimizing it's performance. Stainless steel body of the circulator resists corrosion and allows to use UPS15-55SFC model in a variety of applications ranging from open loop radiant and hot water recirculation, to closed loop hydronic heating and even chilled water cooling. This model also replaces a number of competitive models from Taco, Bell & Gosset, Wilo and others.
    $281.32

  8. Grundfos UPS15-35SFC 3-Speed Stainless Steel Circulator Pump

    Grundfos UPS15-35SFC 3-Speed Stainless Steel Circulator Pump

    Grundfos UPS15-35SFC 3-Speed Stainless Steel Circulator Pump, w IFC, 1/6HP, 115V
    Grundfos UPS15-35SFC is a 1/6HP, 3-Speed Circulator Pump with stainless steel housing, suitable for a wide range of open loop and closed loop applications, including radiant heating, hydronic heating, solar, hot water recirculation, chilled water cooling and many others. 3 speeds of the Grundfos UPS15-35SFC model allow to adjust pump's parameters to match system requirements and achieve optimal performance.
    $267.80

  9. Grundfos UP15-29SF Stainless Steel Circulator Pump

    Grundfos UP15-29SF Stainless Steel Circulator Pump

    Grundfos UP15-29SF Stainless Steel Circulator Pump, 1/8HP, 115V
    Grundfos UP15-29SF 1/8HP, stainless steel, flanged Circulator Pump, primarily used in open loop heating systems, such as radiant, solar, hot water recirculation as well as chilled water cooling and many others.
    $196.04

  10. Pro-Tek 922 Concentrated Corrosion Inhibitor

    Pro-Tek 922 Concentrated Corrosion Inhibitor

    Pro-Tek® 922 is a concentrated corrosion inhibitor treatment specially formulated for hot water closed loop heating systems.
    Pro-Tek® 922 is a concentrated corrosion inhibitor treatment specially formulated for hot water closed loop heating systems. Many water sources used in hydronic heating systems can be very corrosive to metals when heated. Pro-Tek 922 will help to reduce corrosion on aluminum, brass, copper, iron, and stainless steel. Pro-Tek 922 has also been tested and is compatible with standard PEX and Onix tubing typically used in hydronic installations.
    $51.25

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