Hydronics

Hydronic heating systems rely on water as the primary medium for heat transfer, providing efficient and even heating throughout a home or commercial space. To keep your hydronic system operating at peak performance, it’s essential to use quality components that ensure smooth, uninterrupted function. For effective air removal, our vent assemblies help purge trapped air and reduce system contamination, while air eliminators work to control dirt and debris, minimizing air vent fouling and preserving system health.

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Showing 1249–1296 of 1711 resultsSorted by popularity

VFD 2-Line 16-Character Display with Cable for BurnerLogiX Systems

Fireye

SKU: BLV512
$666.38
MSRP: $766.34
You save 15%
Fireye BLV512 VFD Display 2-Line 16 Character with Cable BurnerLogiX Interface quantity
24-Inch Ionization Flame Rod with 1/2-Inch NPT Mount for Gas Burners

Fireye

SKU: 69ND1-1000K8
$208.59
MSRP: $714.10
You save 71%
Fireye 69ND1-1000K8 24 Inch Flame Rod 1/2 Inch NPT Gas Flame Sensor quantity
Pressure Transducer, 0–300 PSI, 1/4″ NPT, 4–20 mA Linear Output

Fireye

SKU: BLPS-300
$620.96
MSRP: $714.10
You save 15%
Fireye BLPS-300 Pressure Transducer 0–300 PSI 1/4" NPT 4–20 mA quantity
Flame Rod, 12 Inch Length, 1/2″ NPT Threaded Mount

Fireye

SKU: 69ND1-1000K4
$150.39
MSRP: $172.95
You save 13%
Fireye 69ND1-1000K4 Flame Rod 12 Inch 1/2" NPT Mount quantity
NEXUS Integrated Burner Management Controller with Flame Safeguard

Fireye

SKU: NX6100
$3,161.41
MSRP: $3,635.62
You save 13%
Fireye NX6100 NEXUS Integrated Burner Management Controller quantity
Solid-state pressure transducer with 4–20 mA output, 0–200 PSI range

Fireye

SKU: BLPS-200
$550.41
MSRP: $632.97
You save 13%
Fireye BLPS-200 Pressure Transducer 0–200 PSI quantity
2-Line 16-Character LCD Display & Keypad Interface for BurnerLogiX Systems

Fireye

SKU: BLL510
$632.14
MSRP: $726.96
You save 13%
Fireye BLL510 LCD Display 2-Line 16 Character with Cable BurnerLogiX Interface Module quantity
Self-Checking Ultraviolet Flame Scanner for Industrial Burners

Fireye

SKU: 45UV5-1101
$8,265.76
MSRP: $10,655.62
You save 22%
Fireye 45UV5-1101 Self-Checking UV Flame Scanner quantity
CANbus Servo Motor with Magnetic Position Feedback, 40 Nm

Fireye

SKU: NXC40M
$1,973.26
MSRP: $2,269.25
You save 15%
Fireye NXC40M CANbus Servo Motor with Magnetic Position Feedback, 40 Nm quantity
UV Self-Check Flame Scanner with 8 Ft Lead & 1 In NPT Mount

Fireye

SKU: 45UV5-1009
$2,033.34
MSRP: $2,338.34
You save 15%
Fireye 45UV5-1009 UV Self-Check Flame Scanner 8 Ft Lead 1 In NPT Mount quantity
CANbus servo motor with magnetic position feedback, 20 Nm torque output

Fireye

SKU: NXC20M
$1,044.96
MSRP: $1,201.70
You save 15%
Fireye NXC20M CANbus Servo Motor with Magnetic Position Control, 20 Nm quantity
CANbus Servo Motor with Magnetic Position Feedback for Burner Systems

Fireye

SKU: NXC12M
$896.18
MSRP: $1,030.61
You save 15%
Fireye NXC12M Servo Motor Magnetic Position Sensor (CANbus Actuator) quantity
2-1/2″ Dial Thermometer with 1/2″ NPT Brass Thermowell, 32–250°F

Resideo

SKU: GT162
$23.16
MSRP: $26.63
You save 15%
Resideo GT162 2-1/2 Inch Dial Thermometer with 1/2 Inch NPT Well 32–250°F quantity
Dual-function pressure & temperature gauge, 75 PSI, 60–320°F

Resideo

SKU: TD-090
$30.48
MSRP: $35.05
You save 15%
Resideo TD-090 Tridicator Gauge 1/4 in. NPT 75 PSI 60–320°F quantity
3/4 In. Threaded Straight Body Valve for T104 Thermostatic Actuator

Resideo

SKU: V110D1008
$79.75
MSRP: $91.71
You save 15%
Resideo V110D1008 3/4 In. Threaded Straight Body Valve for T104 Actuator quantity
1/2″ Threaded Horizontal Angle Thermostatic Radiator Valve Body

Resideo

SKU: V110F1002
$97.33
MSRP: $111.93
You save 15%
Resideo V110F1002 1/2" Threaded Horizontal Angle Thermostatic Radiator Valve Body quantity
1/2″ Union NPT Thermostatic Mixing Valve, 70–145°F Temperature Range

Resideo

SKU: AM100-UT-1LF
$156.73
MSRP: $180.24
You save 15%
Resideo AM100-UT-1LF 1/2" Union NPT Thermostatic Mixing Valve 70–145°F quantity
3/4″ NPT Horizontal Angle Thermostatic Radiator Valve Body

Resideo

SKU: V110F1010
$139.80
MSRP: $160.77
You save 15%
Resideo V110F1010 3/4" NPT Horizontal Angle Radiator Valve Body quantity
86 Gallon Heavy Duty Expansion Tank, 1-1/4″ NPT, 100 PSI, 240°F

Resideo

SKU: XPS-160V
$1,075.95
MSRP: $1,237.34
You save 15%
Resideo XPS-160V 86 Gallon Expansion Tank 1-1/4" NPT 100 PSI 240°F Heavy Duty quantity
14-Gallon Heavy-Duty Hydronic Expansion Tank, 1″, 100 PSI, 240°F

Resideo

SKU: XPS-030V
$312.33
MSRP: $359.18
You save 15%
Resideo XPS-030V 14 Gallon Expansion Tank 1 Inch 100 PSI 240°F Heavy Duty quantity
1/8″ NPT Thermostatic Radiator Valve for 1-Pipe Steam Systems with Air Vent

Resideo

SKU: V2043HSL10
$138.19
MSRP: $158.92
You save 15%
Resideo V2043HSL10 1/8" NPT 1-Pipe Steam Thermostatic Radiator Valve with SA123A Air Vent quantity
AM-1 Series Standard Range Thermostatic Mixing Valve Repair Kit

Resideo

SKU: AM-1-025RP
$54.89
MSRP: $63.12
You save 15%
Resideo AM-1-025RP AM-1 Thermostatic Mixing Valve Standard Range Repair Kit quantity
AM1-B/C Thermostatic Mixing Valve Element Repair Kit

Resideo

SKU: AM-1-020RP
$52.79
MSRP: $60.71
You save 15%
Resideo AM-1-020RP AM1-B/C Thermostatic Mixing Valve Element Repair Kit quantity
3/4″ NPT Vertical Angle Thermostatic Radiator Valve, 2.7 Cv

Resideo

SKU: V2040ESL20
$86.06
MSRP: $98.97
You save 15%
Resideo V2040ESL20 3/4" NPT Vertical Angle Thermostatic Radiator Valve quantity
1/2″ NPT Angle Body Thermostatic Radiator Valve with Tailpiece

Resideo

SKU: V2040ESL15
$42.21
MSRP: $48.54
You save 15%
Resideo V2040ESL15 1/2" NPT Angle Body Thermostatic Radiator Valve with Tailpiece quantity
1-Inch NPT Straight Body Thermostatic Radiator Valve

Resideo

SKU: V2040DSL25
$100.41
MSRP: $115.47
You save 15%
Resideo V2040DSL25 1" NPT Straight Body Thermostatic Radiator Valve quantity
3/4 In. NPT Straight Body Thermostatic Radiator Valve

Resideo

SKU: V2040DSL20
$46.63
MSRP: $53.62
You save 15%
Resideo V2040DSL20 3/4 In. NPT Straight Body Thermostatic Radiator Valve quantity
1/2″ NPT Straight Body Thermostatic Radiator Valve with 2.5 Cv

Resideo

SKU: V2040DSL15
$42.21
MSRP: $48.54
You save 15%
Resideo V2040DSL15 1/2" NPT Straight Body Thermostatic Radiator Valve quantity
Replacement top assembly and float for PV Series SuperVent air eliminators

Resideo

SKU: PV-020RP
$75.06
MSRP: $86.32
You save 15%
Resideo PV-020RP Top Assembly and Float Horizontal Mount for SuperVent Air Eliminators quantity
3-Inch End Cover Gasket for EA, ER, 3A, 3R, L & NR Series Compressors

Copeland

SKU: 020-0054-00
$16.05
MSRP: $18.46
You save 15%
Copeland 020-0054-00 End Cover Gasket 3 Inches quantity
2-Gallon Thermal Expansion Tank with 3/4 Inch NPT Male Connection

Resideo

SKU: TX-5
$84.98
MSRP: $97.73
You save 15%
Resideo TX-5 2-Gallon Thermal Expansion Tank, 3/4 Inch NPT quantity
4.4 Gallon 3/4″ NPT Thermal Expansion Tank with Butyl Diaphragm

Resideo

SKU: TX-12
$117.33
MSRP: $134.93
You save 15%
Resideo TX-12 4.4 Gallon 3/4" Thermal Expansion Tank quantity
14-Gallon Hydronic Heating Expansion Tank, 1/2″ NPT, 100 PSI, 240°F

Resideo

SKU: TK300-90
$243.95
MSRP: $280.54
You save 15%
Resideo TK300-90 14-Gallon Hydronic Heating Expansion Tank | 1/2" NPT | 100 PSI | 240°F quantity
Sleeve-Type Coupler Assembly, 5/8″ x 5/8″, for S&H & 1060 Series Pumps

Armstrong Fluid Technology

SKU: 816665-000
$201.20
MSRP: $231.38
You save 13%
Armstrong Fluid Technology 816665-000 Coupler Assembly, 5/8" x 5/8", S&H & 1060 Series quantity
Size 11E coupler insert replacement for Armstrong pump systems

Armstrong Fluid Technology

SKU: 975000-809
$899.99
MSRP: $1,034.99
You save 15%
Armstrong Fluid Technology 975000-809 Coupler Insert 11E quantity
Astro 2 250SS Stainless Steel Circulator Pump, 3/4″ to 1-1/2″ Connection

Armstrong Fluid Technology

SKU: 110223-308
$546.81
MSRP: $628.83
You save 13%
Armstrong Fluid Technology 110223-308 Astro 2 250SS Stainless Steel Circulator Pump, 3/4" to 1-1/2" quantity
Stainless Steel Shaft Sleeve Spacer for Armstrong Series 4380 Pumps

Armstrong Fluid Technology

SKU: 425868-005
$56.70
MSRP: $65.21
You save 15%
Armstrong Fluid Technology 425868-005 Stainless Steel Shaft Sleeve Spacer – Series 4380 quantity
Armstrong Fluid Technology Replacement Pump Body

Armstrong Fluid Technology

SKU: 816338-841
$2,484.68
MSRP: $2,857.38
You save 13%
Armstrong Fluid Technology Pump Body | 816338-841 quantity
Buna O-Ring, 0.75″ Inner Diameter – Reliable Industrial Sealing

Armstrong Fluid Technology

SKU: 961131-210
$4.90
MSRP: $8.05
You save 39%
Armstrong Fluid Technology 961131-210 Buna O-Ring – 0.75" Inner Diameter quantity
Seal and Gasket Kit for Fluid System Maintenance and Repairs

Armstrong Fluid Technology

SKU: 89975001-81702K
$368.76
MSRP: $424.07
You save 13%
Armstrong Fluid Technology Seal and Gasket Kit | 89975001-81702K quantity
4.75″ Impeller Kit for Armstrong S-55 & 1050-2B Series Pumps

Armstrong Fluid Technology

SKU: 816304-321K
$517.96
MSRP: $595.65
You save 15%
Armstrong Fluid Technology 816304-321K Impeller Kit 4.75" for S-55 & 1050-2B Pumps quantity
5.25″ Replacement Impeller Kit for Armstrong Series H & 1050 Pumps

Armstrong Fluid Technology

SKU: 816303-317K
$466.59
MSRP: $536.58
You save 15%
Armstrong Fluid Technology 816303-317K 5.25" Impeller Kit for Series H & 1050 Pumps quantity
5.25″ Impeller Kit for Armstrong Series 1050 & Series H Pumps

Armstrong Fluid Technology

SKU: 816302-317K
$441.25
MSRP: $507.44
You save 13%
Armstrong Fluid Technology 816302-317K 5.25" Impeller Kit for NCO-816302 Pumps quantity
Armstrong Fluid Technology 5″ Impeller Replacement Kit

Armstrong Fluid Technology

SKU: 816302-319K
$511.63
MSRP: $588.37
You save 13%
Armstrong Fluid Technology 5" Impeller Kit | Model 816302-319K quantity
10″ Nitrile Casing Gasket for Armstrong Series 4030, 4280, 4300 & 4380

Armstrong Fluid Technology

SKU: 8426401-004
$81.20
MSRP: $93.38
You save 15%
Armstrong Fluid Technology 8426401-004 10" Nitrile Pump Casing Gasket quantity
AX-40V Expansion Tank for Closed Heating & Chilled Water Systems

Armstrong Fluid Technology

SKU: 572005-099
$4,647.55
MSRP: $5,344.68
You save 15%
Armstrong Fluid Technology AX-40V Expansion Tank | Model 572005-099 quantity
Compass H SS Wet-Rotor Circulator Pump, 115V — Residential & Commercial

Armstrong Fluid Technology

SKU: 180203-687
$741.83
MSRP: $853.10
You save 15%
Armstrong Fluid Technology 180203-687 Compass H Stainless Steel Wet-Rotor Circulator Pump 115V quantity
Mechanical Seal Kit 1.125″ G30 C-SSC for Armstrong Commercial Pumps

Armstrong Fluid Technology

SKU: 8975000-962
$2,496.83
MSRP: $2,871.35
You save 15%
Armstrong Fluid Technology Mechanical Seal Kit 1.125" G30 C-SSC (8975000-962) quantity