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Search results for 'Tankless water heaters'

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  1. Caleffi Series 521 MixCal 3-Way Thermostatic Mixing Valve with adapter

    Caleffi Series 521 MixCal 3-Way Thermostatic Mixing Valve with adapter

    Caleffi MixCal 3-Way Thermostatic Mixing Valve
    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: 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

  2. Caleffi Series 676 Two-way Thermoelectric Zone Valve Including Actuator

    Caleffi Series 676 Two-way Thermoelectric Zone Valve Including Actuator

    Caleffi Series 676 Two-way Thermoelectric Zone Valve
    Zone valves are used to control hot and chilled water in heating and air conditioning systems. Coupled with an electro-thermal control actuator and managed by a room thermostat, they allow automatic on/off control of the hydronic circuit on which they are installed. Their special feature is their compact size and they can therefore be installed almost anywhere including baseboard or directly in fan-coil units.
    $57.30

  3. Caleffi Discal Series 551 Compact Air Separator 3/4" Sweat

    Caleffi Discal Series 551 Compact Air Separator 3/4" Sweat

    Air separator. Brass body. Stainless steel mesh internal element. ½" NPT bottom thread. Max. working pressure: 150 psi. Working temperature range: 32—250°F.
    Air separators are used to continuously remove the air contained in the hydronic circuits of heating and cooling systems. The air discharge capacity of these devices is very high. They are capable of removing automatically all the air present in the system down to micro-bubble level. The circulation of fully de-aerated water enables the equipment to operate under optimum conditions, free from any noise, corrosion, localized overheating or mechanical damage. Micro-bubbles, fuse together, increase in volume until they become large enough to rise to the top where they are automatically released.
    $51.82

  4. 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

  5. Caleffi Z-One Quick Order Valve and Actuator Sets

    Caleffi Z-One Quick Order Valve and Actuator Sets

    Caleffi Z-One Quick Order Valve and Actuator
    Z-one valves are used to automatically shut-off the flow or redirect hot and chilled water in hydronic heating and air conditioning systems. The motorized two position, on/off/, spring return A1 series actuator has an end mounted push button for quick installation to valve body. The actuator is equipped with or without auxiliary switch and configured Normally closed or Normally Opened with wire or terminal connections. The zero leakage high temperature zone valve body Z2 series is 2-way straight through and the valve body Z3 series is 3-way diverting. The Z1 series actuator is easily attached by a push button lock and without tools. The high temperature and high close-off performance characteristics of these zone valves, combined with the compact size, makes them suitable to fit inside baseboard or directly in fan coil units.
    $74.18

  6. Caleffi Z-One 120V Normally Closed Valve Actuators

    Caleffi Z-One 120V Normally Closed Valve Actuators

    Caleffi Z-One 120V Normally Closed Valve Actuators
    Z-one valves are used to automatically shut-off the flow or redirect hot and chilled water in hydronic heating and air conditioning systems. The motorized two position, on/off/, spring return A1 series actuator has an end mounted push button for quick installation to valve body. The actuator is equipped with or without auxiliary switch and configured Normally closed or Normally Opened with wire or terminal connections.
    $48.57

  7. Caleffi Z-One 24V Normally Closed Valve Actuators

    Caleffi Z-One 24V Normally Closed Valve Actuators

    Caleffi Z-One 24V Normally Closed Valve Actuators
    Z-one valves are used to automatically shut-off the flow or redirect hot and chilled water in hydronic heating and air conditioning systems. The motorized two position, on/off/, spring return A1 series actuator has an end mounted push button for quick installation to valve body. The actuator is equipped with or without auxiliary switch and configured Normally closed or Normally Opened with wire or terminal connections.
    $48.57

  8. Grundfos UPS26-99BFC Brute Three Speed Bronze 1/6 Horsepower Recirculator Pump

    Grundfos UPS26-99BFC Brute Three Speed Bronze 1/6 Horsepower Recirculator Pump

    Grundfos Brute Three Speed Bronze Recirculator Pump
    The Grundfos UPS26-99BFC (52722518) model incorporates a three speed motor for increased versatility, a built-in check valve and a bronze housing for ehnaced corrosion resistance. The wet rotor design allows it to be virtually silent while operating, while built-in motor protection assures long life of the circulator. Performance parameters (flow rates and pressure drop) of the Grundfos UPS26-99BFC model make it well suited for a wide range of applications, from radiant and hydronic heating, to domestic hot water recirculatio, solar, chilled water cooling and many others.
    $408.72

  9. Johnson 24VAC Single Stage Temperature Control

    Johnson 24VAC Single Stage Temperature Control

    Johnson A419GBF-1C 24VAC Single Stage Temperature Control
    The A419 series controls are single-stage, electronic temperature controls with a Single-Pole, Double-Throw (SPDT) output relay. They feature a lockable front-panel touchpad for setup and adjustment, and a Liquid Crystal Display (LCD) for viewing the temperature and status of other functions. A Light-Emitting Diode (LED) indicates the controls? output relay On/Off status. The A419 controls are available in 24 VAC or 120/240 VAC powered models. The A419 controls have heating and cooling modes, adjustable setpoint and differential, an adjustable anti-short cycle delay, and a temperature offset function. The setpoint range is -30 to 212°F (-34 to 100°C). The controls feature remote sensing capability and interchangeable sensors. The A419 controls are available in either NEMA 1, high-impact plastic enclosure suitable for surface or DIN rail mounting or NEMA 4X watertight, corrosion-resistant surface-mount enclosures.
    $74.63

  10. Johnson Controls Single Stage Digital Temperature Control

    Johnson Controls Single Stage Digital Temperature Control

    Johnson Controls Single Stage Digital Temperature Control (120/240v SPDT)
    The A419 series controls are single-stage, electronic temperature controls with a Single-Pole, Double-Throw (SPDT) output relay. They feature a lockable front-panel touchpad for setup and adjustment, and a Liquid Crystal Display (LCD) for viewing the temperature and status of other functions. A Light-Emitting Diode (LED) indicates the controls? output relay On/Off status. The A419 controls are available in 24 VAC or 120/240 VAC powered models. The A419 controls have heating and cooling modes, adjustable setpoint and differential, an adjustable anti-short cycle delay, and a temperature offset function. The setpoint range is -30 to 212°F (-34 to 100°C). The controls feature remote sensing capability and interchangeable sensors. The A419 controls are available in either NEMA 1, high-impact plastic enclosure suitable for surface or DIN rail mounting or NEMA 4X watertight, corrosion-resistant surface-mount enclosures.
    $73.90

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