Home > Popular Brands > Caleffi Hydronics
Choose a sub category:
Zone Control Relays Zone Valve Repair Kit Zone Valves & Controls
548 Hydro Separator 5495 Sep-4 Air, Dirt, Separators 559 HydroLink
Air Separators Air Vents AutoFill Valves
Check Valves Dirt Separators Drain Valves
Flow Switch Low-Lead Balance Valves With Thermometers Low-Lead Balancing Valves
Pressure Bypass Valves
Sort By:
Page of 7
Caleffi 551 DISCALAIR Air Vent 1/2" NPT Female 551004A Calefffi 551 DiscalAir 551004A

½" NPT female High Discharge Automatic Air Vent.

Usually Ships in 3 to 5 Days
Our Price: $66.00
Caleffi Valcal Air Vent 502243A 1/2" NPT Caleffi 5022 Valcal High Discharge Air Vent 502243A ½" NPT Male

Caleffi Valcal High discharge automatic air vent.

Usually Ships in 3 to 5 Business Days
Our Price: $31.00
Caleffi Universal Flow Switch - 626600A Caleffi Universal Flow Switch - 626600A

Universal flow switch for heating and air conditioning systems.

Usually Ships in 3 to 5 Days
Our Price: $122.00
Replacement paddles for 606009 flow switch. Caleffi Flow Switch Replacement Paddle Assembly Caleffi Flow Switch Replacement Paddle Assembly - 626009

Caleffi Flow Switch Replacement Paddle Assembly.

Usually Ships in 3 to 5 Days
Our Price: $23.00
Caleffi, Zone Control Relay. 3-Zone Caleffi, Zone Control Relay. 3-Zone ZSR103

The ZSR103 is 3-zone pump and boiler operating control for multiple zone hydronic heating systems.

Usually Ships in 3 to 5 Business Days
Our Price: $136.00
Caleffi, Zone Control Relay. 4-Zone Caleffi, Zone Control Relay. 4-Zone ZSR104

The ZSR104 is a 4-zone pump and boiler operating control for multiple zone hydronic heating systems.

Usually Ships in 3 to 5 Business Days
Our Price: $158.00
Caleffi, Zone Control Relay. 6-Zone Caleffi, Zone Control Relay. 6-Zone ZSR106

The ZSR106 is a 6-zone pump and boiler operating control for multiple zone hydronic heating systems.

Usually Ships in 3 to 5 Business Days
Our Price: $191.00
Caleffi, Zone Control Relay. 1-Zone Caleffi, Zone Control Relay. 1-Zone ZSR101

The ZSR101 is a single zone switching relay.

Usually Ships in 3 to 5 Business Days
Our Price: $65.00
Caleffi, Zone Control Relay. 3-Zone Caleffi, Zone Control Relay. 3-Zone ZVR103

The ZVR103 is a 3-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

Usually Ships in 3 to 5 Business Days
Our Price: $106.00
Caleffi, Zone Control Relay. 4-Zone Caleffi, Zone Control Relay. 4-Zone ZVR104

The ZVR104 is a 4-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

Usually Ships in 3 to 5 Business Days
Our Price: $125.00
Caleffi, Zone Control Relay. 6-Zone Caleffi, Zone Control Relay. 6-Zone ZVR106

The ZVR106 is a 6-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

Usually Ships in 3 to 5 Business Days
Our Price: $158.00
Caleffi, Zone Control Expansion Transformer Caleffi, Zone Control Expansion Transformer

NA10343 - Expansion transformer for the ZVR Series multi-zone valve relay and boiler operating controls.

Usually Ships in 3 to 5 Business Days
Our Price: $43.00
Caleffi Zone Valve Repair Kit Caleffi Zone Valve Repair Kit for 1/2" & 3/4" sweat Z2, Z3

Caleffi two-way and three-way zone valve body repair kit.

Usually Ships in 3 to 5 Business Days
Our Price: $20.00
Caleffi Zone Valve Repair Kit Caleffi Zone Valve Repair Kit for 3/4" NPT & 1" Z2, Z3

Caleffi two-way and three-way zone valve body repair kit.

Usually Ships in 3 to 5 Business Days
Our Price: $20.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300041

Caleffi, inverted flare, Three-way on/off two position valve.

  • 1.0 CV, 75 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $41.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300042

Caleffi, inverted flare, Three-way on/off two position valve.

  • 2.5 CV, 50 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $41.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300043

Caleffi, inverted flare, Three-way on/off two position valve.

  • 3.5 CV, 30 PSI DELTA P.

Usually Ships in 3 to 5 Business Days
Our Price: $41.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300411

Caleffi, ½" NPT, Three-way on/off two position valve.

  • 1.0 CV, 75 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $41.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300412

Caleffi, ½" NPT, Three-way on/off two position valve.

  • 2.5 CV, 50 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $41.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300413

Caleffi, ½" NPT, Three-way on/off two position valve.

  • 2.5 CV, 50 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $41.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300431

Caleffi, ½" sweat, Three-way on/off two position valve.

  • 1.0 CV, 75 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $39.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300432

Caleffi, ½" sweat, Three-way on/off two position valve.

  • 2.5 CV, 50 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $39.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300512

Caleffi, ¾" NPT, Three-way on/off two position valve.

  • 2.5 CV, 50 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $48.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300513

Caleffi, ¾" NPT, Three-way on/off two position valve.

  • 3.5 CV, 30 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $48.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300515

Caleffi, ¾" NPT, Three-way on/off two position valve.

  • 5.0 CV, 25 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $48.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300517

Caleffi, ¾" NPT, Three-way on/off two position valve.

  • 7.5 CV, 20 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $48.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300532

Caleffi, ¾" sweat, Three-way on/off two position valve.

  • 2.5 CV, 50 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $46.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300533

Caleffi, ¾" sweat, Three-way on/off two position valve.

  • 3.5 CV, 30 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $46.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300535

Caleffi, ¾" sweat, Three-way on/off two position valve.

  • 5.0 CV, 25 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $46.00
Caleffi 3-way on/off two position valve. Caleffi 3-Way On/Off Zone Valve Z300617

Caleffi, 1" sweat, Three-way on/off two position valve.

  • 7.5 CV, 20 PSI DELTA P

Usually Ships in 3 to 5 Business Days
Our Price: $66.00