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View Details Taco 5004-HX-P3-G 1" PEX Union 5004 Heating Only Mixing Valve w/ Gauge | Blackhawk Supply
5004-HX-P3-G | 1" PEX Union 5004 Heating Only Mixing Valve w / Gauge | Taco
Brand: Taco
SKU: 5004-HX-P3-G
$224.38 each
View Details Taco 409-3 3/4" Commercially Rated Brass Vent | Blackhawk Supply
409-3 | 3 / 4" Commercially Rated Brass Vent | Taco
Brand: Taco
SKU: 409-3
$502.24 each
View Details Taco SFL-125S-0012 1-1/4" Sweat Shut-Off Brass Freedom Swivel-Flange Set for 0012-F4, 2400-30 & 2400-40 (Low Lead) | Blackhawk Supply
SFL-125S-0012 | 1-1 / 4" Sweat Shut-Off Brass Freedom Swivel-Flange Set for 0012-F4, 2400-30 & 2400-40 (Low Lead) | Taco
Brand: Taco
SKU: SFL-125S-0012
$203.44 each
View Details Taco 437-1 4" Air Scoop | Blackhawk Supply
437-1 | 4" Air Scoop | Taco
Brand: Taco
SKU: 437-1
$719.21 each
View Details Midland Metal Mfg. 46048 1/8 MIP MULTI PURPOSE AIR VENT, Brass Fittings, Needle Valves, Multi Purpose Air Vent | Blackhawk Supply
46048 | 1 / 8 MIP MULTI PURPOSE AIR VENT, Brass Fittings, Needle Valves, Multi Purpose Air Vent | Midland Metal Mfg.
Brand: Midland Metal Mfg.
SKU: 46048
$3.38 each
View Details Taco 5124-C2-G 1" Sweat Union 5124 Mixing Valve w/ Gauge (Low Lead) | Blackhawk Supply
5124-C2-G | 1" Sweat Union 5124 Mixing Valve w / Gauge (Low Lead) | Taco
Brand: Taco
SKU: 5124-C2-G
$210.31 each
View Details Taco 49MD-150C-2 Separator | Dirt | Threaded | 1-1/2" | 150 PSI | Bronze | In-Line | Blackhawk Supply
49MD-150C-2 | Separator | Dirt | Threaded | 1-1 / 2" | 150 PSI | Bronze | In-Line | Taco
Brand: Taco
SKU: 49MD-150C-2
$281.56 each
View Details Taco 400-4 1/8" Hy-Vent | Blackhawk Supply
400-4 | 1 / 8" Hy-Vent | Taco
Brand: Taco
SKU: 400-4
$23.29 each
View Details Taco 194-2124F FREEDOM FLANGE SET | IRON | 2" NPT | Blackhawk Supply
194-2124F | FREEDOM FLANGE SET | IRON | 2" NPT | Taco
Brand: Taco
SKU: 194-2124F
$93.95 each
View Details Taco 110-524BSFL FREEDOM FLANGE SET | 1" SWEAT | BRONZE (LOW LEAD) | Blackhawk Supply
110-524BSFL | FREEDOM FLANGE SET | 1" SWEAT | BRONZE (LOW LEAD) | Taco
Brand: Taco
SKU: 110-524BSFL
$76.88 each
View Details Taco ACT02F-125 Air Separator (Tangential) | 2" | Threaded | 125PSI | Strainer | Blackhawk Supply
ACT02F-125 | Air Separator (Tangential) | 2" | Threaded | 125PSI | Strainer | Taco
Brand: Taco
SKU: ACT02F-125
View Details
View Details Taco 49MD-125T-2 Separator | Dirt | Threaded | 1-1/4" | 125 PSI | Bronze | In-Line | Blackhawk Supply
49MD-125T-2 | Separator | Dirt | Threaded | 1-1 / 4" | 125 PSI | Bronze | In-Line | Taco
Brand: Taco
SKU: 49MD-125T-2
$221.25 each
View Details Taco 49MD-100C-2 Separator | Dirt | Sweat | 1" | 150 PSI | Bronze | In-Line | Blackhawk Supply
49MD-100C-2 | Separator | Dirt | Sweat | 1" | 150 PSI | Bronze | In-Line | Taco
Brand: Taco
SKU: 49MD-100C-2
$159.38 each
View Details Taco 418-4 1/2" FNPT x 3/4" MNPT Hy-Vent | Blackhawk Supply
418-4 | 1 / 2" FNPT x 3 / 4" MNPT Hy-Vent | Taco
Brand: Taco
SKU: 418-4
$66.22 each
View Details Taco 414-1 1/4" NPT Waste Connector | Blackhawk Supply
414-1 | 1 / 4" NPT Waste Connector | Taco
Brand: Taco
SKU: 414-1
$16.59 each
View Details Taco 110-522BSFL FREEDOM FLANGE SET | 1/2" SWEAT | BRONZE (LOW LEAD) | Blackhawk Supply
110-522BSFL | FREEDOM FLANGE SET | 1 / 2" SWEAT | BRONZE (LOW LEAD) | Taco
Brand: Taco
SKU: 110-522BSFL
$76.88 each
View Details Taco 110-254SF FREEDOM FLANGE SET | 1-1/2" NPT | STAINLESS STEEL | Blackhawk Supply
110-254SF | FREEDOM FLANGE SET | 1-1 / 2" NPT | STAINLESS STEEL | Taco
Brand: Taco
SKU: 110-254SF
$76.88 each
View Details Graco D05211 KIT,515/716M/P AC,PT,PT,PF-PT | Blackhawk Supply
D05211 | KIT, 515 / 716M / P AC, PT, PT, PF-PT | Graco
Brand: Graco
SKU: D05211
$738.38 each
View Details Honeywell 14003300-001 REBUILD KIT FOR 3/4" VP525A WITH 7/8" O.D. SOLDER BODY. W/ TOP AND INSE RT ASSY, VALVE SEAT, FTGS, SPRINGS. REUSE EXISTING VALVE BODY. | Blackhawk Supply
14003300-001 | REBUILD KIT FOR 3 / 4" VP525A WITH 7 / 8" O.D. SOLDER BODY. W / TOP AND INSE RT ASSY, VALVE SEAT, FTGS, SPRINGS. REUSE EXISTING VALVE BODY. | Honeywell
Brand: Honeywell
SKU: 14003300-001
$345.86 each
View Details J/B Industries SAE Fittings CCLS-60 Charging Hose Set Secure Seal 60 Inch Kevlar Red/Yellow/Blue 800 Pounds per Square Inch | Blackhawk Supply
CCLS-60 | Charging Hose Set Secure Seal 60 Inch Kevlar Red / Yellow / Blue 800 Pounds per Square Inch | J / B Industries SAE Fittings
Brand: J/B Industries SAE Fittings
SKU: CCLS-60
$153.46 each
View Details RESIDEO PV125S/U Air Eliminator Super Vent 1-1/4 Inch Bronze Sweat 125 Pounds per Square Inch 240 Degrees Fahrenheit | Blackhawk Supply
PV125S / U | Air Eliminator Super Vent 1-1 / 4 Inch Bronze Sweat 125 Pounds per Square Inch 240 Degrees Fahrenheit | RESIDEO
Brand: RESIDEO
SKU: PV125S/U
$236.64 each
View Details RESIDEO PV150/U Air Eliminator Super Vent 1-1/2 Inch Bronze Female NPT 125 Pounds per Square Inch 240 Degrees Fahrenheit | Blackhawk Supply
PV150 / U | Air Eliminator Super Vent 1-1 / 2 Inch Bronze Female NPT 125 Pounds per Square Inch 240 Degrees Fahrenheit | RESIDEO
Brand: RESIDEO
SKU: PV150/U
View Details
View Details RESIDEO PV125/U Air Eliminator Super Vent 1-1/4 Inch Bronze Female NPT 125 Pounds per Square Inch 240 Degrees Fahrenheit | Blackhawk Supply
PV125 / U | Air Eliminator Super Vent 1-1 / 4 Inch Bronze Female NPT 125 Pounds per Square Inch 240 Degrees Fahrenheit | RESIDEO
Brand: RESIDEO
SKU: PV125/U
$237.79 each
View Details RESIDEO PV100/U Air Eliminator Super Vent 1 Inch Bronze Female NPT 125 Pounds per Square Inch 240 Degrees Fahrenheit | Blackhawk Supply
PV100 / U | Air Eliminator Super Vent 1 Inch Bronze Female NPT 125 Pounds per Square Inch 240 Degrees Fahrenheit | RESIDEO
Brand: RESIDEO
SKU: PV100/U
$175.39 each
Type
Accuracy
Application
Body Pattern
Connection Type
Connection Details
Connection Method
Connection Size
Description
Dimensions
Finish
Fitting
Flow Capacity (Cv)
Gauge Size
Length
Material
Max Flow (GPM)
Max Pressure (PSI)
Max Temp (F)
Measuring Range
Min Temp (F)
Mounting Type
Option
Part Number
Pressure
Pressure Rating
Product Type
Section
Separator Type
Series
Shape
Size
Temperature
Temperature Range (F)
Thread Type
Thread Size
Used With
Used on

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Hydronic Plumbing

Enhance your building's heating and cooling performance with Blackhawk Supply's hydronic plumbing parts. Specializing in precision-engineered components, our range supports dependable operation in hydronic systems that use hot, chilled or conditioned water.

Types of Hydronic Plumbing Parts We Offer

Find all the hydronic plumbing supply parts you need for installation, upgrades or repairs:

  • Air separators and vents: Remove trapped air to prevent noise, corrosion and circulation problems in hydronic plumbing systems.
  • Hydronic accessories: Complete your system with essential parts like gauges, thermostats and mounting hardware for reliable operation.
  • Expansion tanks: Absorb pressure changes as water heats and cools, and protect pipes and equipment.
  • Air elimination: Remove unwanted air from hydronic plumbing systems to deliver quiet operation, prevent corrosion and maintain optimal water circulation.

Our hydronic plumbing solutions are designed for seamless integration, enabling precise zoning, reducing maintenance requirements and optimizing thermal efficiency. 

With components from trusted brands, expert support and fast shipping, Blackhawk Supply helps you build quieter, smarter and more sustainable hydronic systems. Shop our hydronic plumbing products today.

Check out other plumbing supplies and products like:

Committed to customer satisfaction
as experts in Hydronics
(847) 773-0645
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Belimo LF24 US Damper Actuator | 35 in-lb | Spg Rtn | 24V | On/Off | Blackhawk Supply
LF24 US | Damper Actuator | 35 in-lb | Spg Rtn | 24V | On/Off | Belimo
Brand: Belimo
SKU: LF24 US
$246.60 each
Belimo ARX24-MFT Valve Actuator | Non-Spg | 24V | MFT | Blackhawk Supply
ARX24-MFT | Valve Actuator | Non-Spg | 24V | MFT | Belimo
Brand: Belimo
SKU: ARX24-MFT
$413.56 each
Danfoss 065B8900 ESBE ATA Thermostatic Draft Regulator, 3/4" FNPT, 2.2 Pound-force (10N) | Blackhawk Supply
065B8900 | ESBE ATA Thermostatic Draft Regulator, 3/4" FNPT, 2.2 Pound-force (10N) | Danfoss
Brand: Danfoss
SKU: 065B8900
$142.87 each
Veris H221 Split Core | Span Adj. | Range: 0-300AAC | Output: 4-20mA | Loop | Blackhawk Supply
H221 | Split Core | Span Adj. | Range: 0-300AAC | Output: 4-20mA | Loop | Veris
Brand: Veris
SKU: H221
$189.45 each
Contemporary Controls EISK8-100T 8-port 10BASE-T/100BASE-TX Skorpion switch, DIN-rail mount | Blackhawk Supply
EISK8-100T | 8-port 10BASE-T/100BASE-TX Skorpion switch, DIN-rail mount | Contemporary Controls
Brand: Contemporary Controls
SKU: EISK8-100T
$174.38 each
Siemens QAA2280.FWSC Room Temp Sensor, Full Feature, Siemens Logo, Tool Port, TEC Controllers | Blackhawk Supply
QAA2280.FWSC | Room Temp Sensor, Full Feature, Siemens Logo, Tool Port, TEC Controllers | Siemens
Brand: Siemens
SKU: QAA2280.FWSC
$171.48 each
Viconics VT7652B5031 Thermostat | Roof | 2 Heat Cntct | 2 Cool Cntct | Programmable | Blackhawk Supply
VT7652B5031 | Thermostat | Roof | 2 Heat Cntct | 2 Cool Cntct | Programmable | Viconics
Brand: Viconics
SKU: VT7652B5031
$167.46 each
Contemporary Controls EISK16-100T Skorpion 16-Port 10/100Mbps Switch | Blackhawk Supply
EISK16-100T | Skorpion 16-Port 10/100Mbps Switch | Contemporary Controls
Brand: Contemporary Controls
SKU: EISK16-100T
$329.07 each
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