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Radiant Heat Parts & Accessories

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Crown Boiler - MS Series - MEGA-STOR Model MS-40 39 Gallon Stainless Steel Indirect Water Heater - * This Tank Has Been Replaced By MS2-040 MEGA-STOR 2

$ 1,201.51

* This Tank Has Been Replaced By MS2-040 MEGA-STOR 2   The Mega-Stor is a stainless-steel indirect water heater which provides abundant domestic hot water utilizing energy provided by your...
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LEGEND HYDRONICS 830-143 M-8300 1/2" PEX TUBE TO MANIFOLD CONNECTOR - PAIR

$ 8.46

Tube Connectors – Used on all M-8300 Stainless manifolds.
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LEGEND HYDRONICS 800-200 M-8200 4-WIRE CIRCUIT ACTUATOR

$ 58.06

4-Wire Circuit Actuator – For M-8000, M-8100 and M-8200 series manifolds. 24 volt AC actuator with 36" leads. Includes end-switch that closes when valve is fully open.
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LEGEND HYDRONICS 830-201 M-8300 4-WIRE CIRCUIT ACTUATOR

$ 67.09

4-Wire Circuit Actuator – New Product - For M-8300 Stainless manifolds. 24 volt AC actuator with 36" leads.
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Crown Boiler - MS Series - MEGA-STOR Model MS-53 51 Gallon Stainless Steel Indirect Water Heater - **This Tank Has Been Replaced By Model# MS2-050 - NEW VERSION**

$ 1,438.72

**This Tank Has Been Replaced By Model# MS2-050 - NEW VERSION**   The Mega-Stor is a stainless-steel indirect water heater which provides abundant domestic hot water utilizing energy provided by...
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LEGEND HYDRONICS 800-709 ACTUATOR 2-WAY NORMALLY-CLOSED

$ 56.53

REPLACEMENT 4-WIRE ACTUATOR - Order as replacement part for LZV-2 Series
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Caleffi 682545A Model 682 Universal 5/8" PEX-AL-PEX Fitting

$ 5.83

Construction Details There is a large variety of PEX and PEX-AL-PEX pipes available with a wide range of permissible tolerances. This fitting is designed to adapt to several pipe diameters...
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Caleffi 538202 FD Brass Model 538 Drain Valve 1/4" NPT fits 1/2" - 3/4" 120 Series

$ 8.02

Drain valves for field installation in blow-down-port connection of the 120 series Y-strainer. Brass body. With 3/4" garden hose connection. Max. working pressure: 150 psi. Max: working temperature: 250°F.
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Caleffi 250041A Solar Model 250 Automatic Air Vent 1/2" NPT

$ 33.29

Automatic air vent for solar systems. Working temperature range: -20-360°F. Max. working pressure: 150 psi. Max. discharge pressure: 75 psi. Click to View Spec Sheet
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Grundfos 505474 Timer Control 24-Hour Programmable Clock/Timer for use with Single Speed, Series UP (115V) Circulators
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Grundfos 505474 Timer Control 24-Hour Programmable Clock/Timer for use with Single Speed, Series UP (115V) Circulators

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THIS PART HAS BEEN DISCONTINUED. The replacement part # 599388. https://www.ambientfloorheat.com/products/grundfos_599388_timer_control_24-hour_programmable_clock-timer_for_use_with_single_speed_series_up_115v_circulators     Grundfos 24 hour programmable clock timer for use with 115V single speed UP pumps Features ‚ Compact and contemporary...
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Armacell APT15812 1-5/8" ID x 1/2" Nominal Wall AP Armaflex Pipe Insulation, 1 Carton

$ 119.23

Product sold in carton quantities only. 6 Foot Lengths 90 Linear Feet per Carton AP Armaflex, the world's most recognized brand of closed-cell foam insulation, provides superior protection against thermal...
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Bell & Gossett 113237 Brass TPV-1FM Tank Purge Valve

$ 45.14

Combination full port shut-off valve and drain valve used to connect an expansion tank to the system. It is important that the pre-charge in an expansion tank be maintained at...
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LEGEND HYDRONICS 800-664 T-825 BOTTOM MOUNT TEMPERATURE & PRESSURE GAUGE 1/4" MPT 40 - 200F

$ 21.86

TEMPERATURE AND PRESSURE GAUGE 1/4" MPT - BOTTOM MOUNT
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LEGEND HYDRONICS 800-705 LZV-2 SERIES 2-WAY ZONE VALVE 1" SWEAT CONNECTION WITH END SWITCH

$ 98.75

LZV-2 Series Motorized Valves – 2-Way Zone Valve, normally closed
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LEGEND HYDRONICS 830-805 M-8300 STAINLESS AIR & WATER PURGE ADAPTER

$ 39.95

Air & Water Purge Adapter – For M-8300 Stainless manifolds. Includes automatic air vent and fill & purge valve. Converts the M-8300 to the M-8300P.
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LEGEND HYDRONICS 800-141 MANIFOLD PORT CAP

$ 2.35

Manifold Port Cap – Used to close and seal unused ports on M-8000, M-8100 and M-8200 manifolds. Includes EPDM O-ring.
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Caleffi NAS10006 StarMax Tilt Mounting kit

$ 97.57

Tilt mounting brackets and hardware allows tilt mounting of collectors.
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Caleffi NA15017 VFS 5-100 Grundfos Flow/Temperature Sensor

$ 270.75

VFS Grundfos analog flow / temperature sensor. Requires NA15028 cable. Temperature measurement range: 32-210°F. Max. fluid temperature: 250°F Flow measurement accuracy: 1.5% Flow response time: Brass or stainless in-line body....
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Caleffi NA15014 RPS Grundfos Analog Pressure/Temperature Sensor

$ 102.97

RPS Grundfos analog pressure/ temperature sensor. In-line body. Requires NA15028 cable. Pressure measuring range: 0-150 psi. Temperature measurement range: 32-210°F. Max. fluid temperature: 250°F Maximum Glycol: 50%. Connection: 1" male...
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Caleffi F61008 1" Union Nut, low-lead brass

$ 2.41

Union nut fits 5213, 521 & 2521 series. Low lead brass.
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Caleffi F59650 Autofill 553 Series Replacement Cartridge

$ 19.39

AutoFill™ 553 series replacement cartridge
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Caleffi 69294A Repair Kit For 3/4" NPT & All 1" Z2, Z3 Valves

$ 9.25

Two-way and three-way zone valve body repair kit. Includes valve stem paddle with O-rings, C clip and one bottom cap O-ring. Click to View Spec Sheet
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Caleffi 680504A Model 680 Universal Pex Fitting For 1/2" Nominal PEX

$ 5.24

Construction Details There is a large variety of PEX and PEX-AL-PEX pipes available with a wide range of permissible tolerances. This fitting is designed to adapt to several pipe diameters...
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Caleffi 656304 Model 6563 Thermo-Electric Actuator TWISTOP 24V w/manual opening

$ 58.16

TwisTop™ thermo-electric actuator for use with return manifolds. Twist the top to manually open. Power supply: 24 V AC/DC. Initial current draw: 800 mA. Power consumption: 3 W. Rating of...
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Tekmar 013 24 V(ac) Transformer - 96 VA, includes mounting box

$ 72.36

The 24 V (ac) Transformer 013 has a 115 V (ac) primary and a 24 V (ac) secondary with a capacity of 96 VA. A resettable circuit breaker protects the...
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Bell & Gossett 1BN327 Steel HFT-30 Diaphragm Expansion Tank

$ 53.06

Bell & Gossett HFT expansion tanks are designed to absorb the force of thermal expansion in hydronic heating systems. Series HFT tanks for hydronic heating systems are available in sizes...
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Bell & Gossett 109423 ZONETROL AZ-1A Snap-On Pump Relay

$ 79.20

The ZONETROL II AZ-1A snap on relay box is an easy to install single zone pump controller that mounts directly on any Bell & Gossett wet rotor circulator NRF/NBF or...
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LuxPro WP567 THERMOSTAT WALL PLATE

$ 2.26

Use this wallplate (optional) with Lux Thermostats TX500U, TX1500U, TX9100U, TX100E and TX9600TS. Dimensions are 6.5"W x 4.75"H x .188"D. Attractive Trim Plate Covers larger holes behind thermostats. Color is...
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Legend 101-982 1/4" - 1/2" Ss Handle & Nut 1002

$ 7.58

AISI 304 stainless steel handle and nut. Accessory for models 1002, 901,1102.
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LEGEND HYDRONICS 800-662 T-825 REAR MOUNT TEMPERATURE & PRESSURE GAUGE 1/4" MPT 40 - 200F

$ 21.86

TEMPERATURE AND PRESSURE GAUGE 1/4" MPT - REAR MOUNT
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LEGEND HYDRONICS 800-704NE LZV-2 SERIES 2-WAY ZONE VALVE 3/4" SWEAT CONNECTION WITHOUT END SWITCH

$ 82.93

LZV-2 Series Motorized Valves – 2-Way Zone Valve, normally closed
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LEGEND HYDRONICS 830-815 1" M-8300 MANIFOLD UNION

$ 6.03

Manifold Union – Connects any two M-8300 Stainless manifolds to increase circuit capacity.
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LEGEND HYDRONICS 800-856T 1-1/4" MANIFOLD ISOLATION VALVE WITH THERMOMETER - PAIR

$ 163.05

Isolation Valves with Thermometer – For M-8000, M-8100 and M-8200 manifolds, also used as loop isolation valve on M-8220 high capacity manifolds. Sold as red and blue handled pairs.
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LEGEND HYDRONICS 800-856R 1-1/4" MANIFOLD ISOLATION VALVE - RED HANDLE

$ 62.15

1-1/4" MANIFOLD ISOLATION VALVE - RED HANDLE
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LEGEND HYDRONICS 800-332 MANIFOLD AUTOMATIC AIR VENT

$ 10.61

Automatic Air Vent – Replacement air vent for precision adapter & integrated adapter valve.
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Caleffi NA545355 DIRTMAG 3/4" Union NPT Composite Body Magnetic Dirt Separator w/ Isolation Valves

$ 134.66

Dirt separator with magnet. Brass mounting housing. Composite PA66G30 body. Max. working pressure: 45 psi. Working temperature range: 32-195°F. Particle separation capacity: to 5 _m (0.2 mil). Magnetite removal efficiency:...
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Caleffi NA15028 VFS & RPS Molded Plug Cable, 10'

$ 11.11

Cable for connecting Grundfos VFS & RPS with molded plug to BX controller with molded plug.
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Caleffi NA15015 VFS 1-12 Grundfos Flow/Temperature Sensor

$ 141.29

VFS Grundfos analog flow / temperature sensor. Requires NA15028 cable. Temperature measurement range: 32-210°F. Max. fluid temperature: 250°F Flow measurement accuracy: 1.5% Flow response time: Brass or stainless in-line body....
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Caleffi NA12168 Wilo Star S21 - 3 speed 120V,

$ 143.61

Optional pumps fits solar pump stations 255 & 256. 3 speed 120 V, 1" male union thread.
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Caleffi NA10103 Pre-Mixed High Temperature Non-Toxic Glycol, 5 Gallon Bucket

$ 106.78

Pre-mixed 50% high temperature non toxic glycol, FDA reference: 21 CRF 182.1666, Gosselin TOXICITY INDEX 1, Generally recognized as safe for use as direct food additives. NSF listed, Category Code:...
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Caleffi F69590 Replacement Shutoff Valve For 668 S1 Return Manifold

$ 12.24

Replacement shut-off valve fits 668 S1 series manifold.
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Caleffi F39807 Replacement Internal Valve Assembly For Radiator Valves

$ 31.94

Replacement cover and float 99x series fits DISCAL¨ brass 551, NA551 series and DISCALDIRT¨ brass 546 series. Vent cap sold separately.
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Caleffi 861527A CST Model 861 GeoGrip 3/4" x 3/4" Male NPT Pipe Fitting

$ 10.56

GeoGrip™ polyethylene pipe fittings. For joining polyethylene pipe to 132 series QuickSetter™ or NA139 ball valves.
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Caleffi 69293A Repair Kit For All 1/2" & 3/4" Sweat Z2, Z3 Valves

$ 9.25

Two-way and three-way zone valve body repair kit. Includes valve stem paddle with O-rings, C clip and one bottom cap O-ring. Click to View Spec Sheet
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Caleffi 546308A Brass Model 5463 Brass Magnetic DIRTMAG 1-1/2" NPT Magnetic Dirt Separator

$ 250.05

The versatile DIRTMAG¨ magnetic dirt separator removes both magnetic and nonmagnetic particles continuously. In addition to removing sand and rust is ferrous with a glass-reinforced nylon internal element in a...
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Caleffi 538402 FD Brass Model 538 Drain Valve 1/2" NPT fits 1" - 1 1/4" 120 Series

$ 8.20

Drain valves for field installation in blow-down-port connection of the 120 series Y-strainer. Brass body. With 3/4" garden hose connection. Max. working pressure: 150 psi. Max: working temperature: 250°F.
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Caleffi 502015A Brass Model 5020 Minical 1/8" Automatic Air Vent

$ 9.55

Automatic air vent. Brass body. Max. working pressure: 150 psi. Max. discharge pressure: 40 psi. Max. discharge rate: 1.75 SCFM. Max. working temperature: 250°F. Click to View Spec Sheet
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Caleffi 257204A Model 257 iSolar DL3 Datalogger

$ 798.29

iSolar™ DL3 intelligent web enabled datalogger / BACnet IP gateway connects to VBus data terminals on six iSolar™ controllers. VBus input terminals: 6. Pt1000 sensor inputs: 3. Current loop input:...

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