Hydronics
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Flow Check Valve. 3/4" NPTF. Brass Body
Flow Check ValveFlow Check Valve. 3/4" NPTF. Brass Body$17.32 -
Caleffi Series 676 TwisTop Two Way Thermo Electric Zone Valve
Caleffi TwisTop Two Way Thermo Electric Zone ValveTwo-way thermo-electric zone valve. Complete with TwisTop™ (code 656314) actuator. Spring return. Normally closed. Max. body pressure: 150 psi. Max. Temperature: 200°F. Max: Δ P close-off pressure: 20 psi. 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.$68.81 -
Caleffi Series 573 Backflow Preventer 1/2" NPT Female Inlet/Outlet
Caleffi Series 573 Backflow Preventer 1/2" NPT Female Inlet/OutletDual check continuous pressure backflow preventer with atmospheric vent. Brass body. Max. working pressure: 175 psi. Working temperature range: 32—210°F. ASSE 1012 listed and CSA B64.3 certified.$39.29 -
Caleffi Series Z3 Z-One Valve Body, 2-Way 3/4" Sweat 7.5 Cv, 20 psi
Caleffi Z-One Valve Body, 2-Way 3/4" Sweat 7.5 Cv, 20 psiTwo-way on/off two position valve. Straight through flow pattern. Brass body.* Stainless steel stem. EPDM rubber seals and paddle. Max. working pressure: 300 psi. Max temperature: 240°F. *Agency Approval for low-lead brass body: Lead plumbing law compliance: (0.25 max. weighted average lead content). Lead plumbing law certified by IAPMO R&T$27.58 -
Caleffi Series 386 Manifold Plug
Caleffi Series 386 Manifold PlugCap to plug unused manifold outlets on 592, 663 and 668S1 series.$4.92 -
Caleffi Series 502 Automatic Air Vent 1/8" NPT Male
Caleffi Series 502 Automatic Air VentAutomatic air vent. Brass body. Max. working pressure: 150 psi. Max. discharge pressure: 90 psi. Max. working temperature: 240°F.$6.75 -
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 -
Caleffi Z-One 24V Normally Closed Valve Actuators
Caleffi Z-One 24V Normally Closed Valve ActuatorsZ-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 -
Caleffi 132 Series QuickSetter Balancing Valve with Flow Meter
Balancing Valve with Flow Meter, offers direct reading of flow rate, no sight gauge clouding or scaling. Has brass valve body and flow meter, rotatable valve for flow rate adjustement, and graduated scale flow meter with magnetic movement flow rate indicator. MAX working pressure: 150 psi. Temperature range: 14-230 F. Max percentage of glycol: 50%.The 132 series balancing valve accurately sets the flow rate of heating and cooling transfer fluid supplied to fan coils and terminal units or where flow balancing is required in solar thermal systems. Proper hydronic system balancing ensures that the system operates according to design specifications, providing satisfactory thermal comfort with low energy consumption. The flow meter is housed in a bypass circuit on the valve body and can be shut off during normal operation. The flow meter permits fast and easy circuit balancing without added differential pressure gauges and reference charts. The balancing valve is furnished with a preformed insulation shell to optimize thermal performance or both hot and cold water systems.$90.32 -
Caleffi Series 598 1" NPT Tail Piece and Nut for Caleffi Mix Valve
Caleffi Series 598 1" NPT Tail Piece and Nut1" NPT Male with 1" Nut$10.85