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59804A 1/4" Isolation service check valve for removal of air vents, pressure gauges etc. or expansion tank without purging system. Fits automatic air vents 502 series.
Max. working pressure: 150 psi.
Max. working temperature: 250F. Caleffi Isolation Service Check Valve - 59804A

59804A 1/4" Isolation service check valve for removal of air vents, pressure gauges etc. or expansion tank without purging system. Fits automatic air vents 502 series. Max. working pressure: 150 psi. Max. working temperature: 250°F.

Our Price: $6.61
561402A 1/2" Isolation service check valve for removal of air vents, pressure gauges etc. or expansion tank without purging system. Fits automatic air vents 502 series.
Max. working pressure: 150 psi.
Max. working temperature: 250F. Caleffi Isolation Service Check Valve - 561402A

561402A 1/2" Isolation service check valve for removal of air vents, pressure gauges etc. or expansion tank without purging system. Fits automatic air vents 502 series. Max. working pressure: 150 psi. Max. working temperature: 250°F.

Our Price: $7.63
538202 FD 1/4" NPT male x 3/4" garden hose Boiler drain valve.
¾" garden hose thread with cap.
Brass body.
Max. working press: 150 psi.
Max. working temp: 250°F.

MUST PURCHASE A MINIMUM QUANTITY OF 6 Caleffi Boiler Drain Valve - 538202 FD ¼" MIP X Garden Hose

¼" NPT male x ¾" garden hose Boiler drain valve.

Our Price: $19.00
538402 FD 1/2" NPT male x 3/4" garden hose Boiler drain valve.
¾" garden hose thread with cap.
Brass body.
Max. working press: 150 psi.
Max. working temp: 250°F.

MUST PURCHASE A MINIMUM QUANTITY OF 6 Caleffi Boiler Drain Valve - 538402 FD ½" MIP X Garden Hose

½" NPT male x ¾" garden hose Boiler drain valve.

Our Price: $19.00
Caleffi Minical Air Vent 502015A 1/8" NPT Caleffi 5020 Minical Air Vent 502015A ⅛" NPT Male

Caleffi 502015A Automatic air vent.

Our Price: $20.00
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.

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.

Our Price: $20.00
Caleffi Minical Air Vent 502115A 1/8" NPT Caleffi 5021 Minical Air Vent With Isolation Check Valve 502115A ⅛" NPT Male

Caleffi 502115A Automatic air vent with service check valve.

Our Price: $23.00
Caleffi Minical Air Vent 502043A 1/2" NPT Caleffi 5020 Minical Air Vent 502043A ½" NPT Male

Caleffi 502043A Automatic air vent.

Our Price: $23.00
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.

Our Price: $23.00
Caleffi NA39589 3/4" NPT female, drain, ball valve with T HANDLE Caleffi Drain Valve - NA39589 ¾" NPT Female w/T-Handle

¾ NPT female w/T-handle Brass ball valve.

Our Price: $26.00
¾" sweat union. In-line flow check valve. Brass body and fittings. Max. percentage of glycol: 50%.
Max. working pressure: 150 psi.
Temperature range: 32-250F. Caleffi NA510 Inline Check Valve NA51059

Caleffi, ¾" sweat union. In-line flow check valve. Brass body and fittings. Max. percentage of glycol: 50%. Max. working pressure: 150 psi. Temperature range: 32-250°F.

Our Price: $29.12
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.

Our Price: $31.00
Caleffi NA39753 1" NPT female, drain, ball valve with T HANDLE Caleffi Drain Valve - NA39753 1" NPT Female w/T-Handle

1" NPT female w/T-handle Brass ball valve.

Our Price: $31.00
Caleffi Valcal Air Vent 502343A 1/2" NPT Caleffi 5023 Minical Air Vent With Isolation Check Valve 502343A ⅛" NPT Male

Caleffi 502343A Automatic air vent with service check valve.

Our Price: $34.00
Caleffi insulation shell fits 3/4" & 1" DIRTMAG CBN46205 Caleffi Insulation Shell For Dirtcal & Dirtmag CBN546205

Caleffi insulation shell fits ¾" & 1" DIRTCAL, DIRTMAG

Our Price: $37.00
Caleffi 1" sweat union. In-line flow check valve. Brass body and fittings. Max. percentage of glycol: 50%.
Max. working pressure: 150 psi.
Temperature range: 32-250F. Caleffi NA510 Inline Check Valve NA51069

Caleffi, 1" sweat union. In-line flow check valve. Brass body and fittings. Max. percentage of glycol: 50%. Max. working pressure: 150 psi. Temperature range: 32-250°F.

Our Price: $37.19
Fits 1¼" and 1½" DIRTCAL, DIRTMAG Insulation shell fits DIRTCAL 5462 and
DIRTMAG 5463 series. Caleffi Insulation Shell For Dirtcal 5462 And Dirtmag CBN546207

Caleffi insulation shell fits 1 ¼" & 1 ½" DIRTCAL, DIRTMAG

Our Price: $39.00
Insulation shell for 2" CBN546209 Dirtcal Caleffi Insulation Shell For 2" Dirtcal 5462 And Dirtmag CBN546209

Caleffi insulation shell fits 2" DIRTCAL, DIRTMAG

Our Price: $41.00
Caleffi NA39588 1-1/4" NPT female, drain, ball valve with lever Caleffi Drain Valve - NA39588 1 ¼" NPT Female w/lever

1 ¼" NPT female w/lever Brass ball valve.

Our Price: $43.00
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.

Our Price: $43.00
551022A ¾" sweat Compact Air separator. Caleffi 551 Discal Compact 551022A

Caleffi ¾" sweat Compact Air separator.

Our Price: $64.00
Caleffi, Zone Control Relay. 1-Zone Caleffi, Zone Control Relay. 1-Zone ZSR101

The ZSR101 is a single zone switching relay.

Our Price: $65.00
Caleffi NA39600 2" NPT female, drain, ball valve with lever Caleffi Drain Valve - NA39600 2" NPT Female w/lever

2" NPT female w/lever Brass ball valve.

Our Price: $65.60
Caleffi 551 DISCALAIR Air Vent 1/2" NPT Female 551004A Calefffi 551 DiscalAir 551004A

½" NPT female High Discharge Automatic Air Vent.

Our Price: $66.00
551003A ¾" NPT female compact Air separator. Caleffi 551 Discal Compact 551003A

Caleffi ¾" NPT female Compact Air separator.

Our Price: $66.00
Caleffi Differential Pressure By-Pass Valve 5195 Caleffi Differential Pressure By-Pass Valve - 519599A

¾" sweat inlet x ¾" sweat outlet Differential pressure by-pass valve.

Our Price: $68.00
551003AC ¾" NPT female compact Air separator Caleffi 551 Discal Compact 551003AC

Caleffi ¾" NPT female Compact Air separator with ½" service check valve.

Our Price: $69.00
Caleffi Differential Pressure Bypass Valves 5195 Caleffi Differential Pressure Bypass Valves - 519502A

¾" NPT inlet x ¾" NPT Outlet Differential pressure by-pass valve.

Our Price: $69.00
Caleffi Differential Pressure By-Pass Valve 5195 Caleffi Differential Pressure By-Pass Valve - 519566A

¾" press x ¾" NPT press Differential pressure by-pass valve.

Our Price: $76.00