Know a trades student? We're giving away $2,500 scholarships - have them apply today!
Filter menu expanded

Filters

5,222 items
Reset

SORT

Product Availability
–

Show In Stock Only (2894)

Brand
–

American Standard (1)
Amtrol (14)
AO Smith (1)
Apollo Valves (249)
Argo (1)
Armstrong International (4)
Armstrong Pumps (1)
Asco (270)
Asco RedHat (439)
Axiom (1)

Product Type
–

Accessory (1)
Actuator (15)
Adapter Kit (2)
Adapter Set (12)
Air Eliminator (185)
Air Flow Switch (2)
Air Scoop (17)
Air Valve (13)
Air Vent (9)
Airtrol Fitting (9)

Review Score
–

(1015)
(138)
(50)
(6)
(9)

Price Range
–

Under $1 (2)
$1 to $5 (27)
$5 to $10 (28)
$10 to $15 (61)
$15 to $20 (88)
$20 to $25 (74)
$25 to $30 (38)
$30 to $35 (40)
$35 to $40 (58)
$40 to $45 (52)

Hydronic Valves, Controls & Parts

5222 items
Grid
List
Compare
Product Image of 2" NPT Aluminum 2-Way Normally Open Solenoid Valve w/ Jun/Ct Box 60 Cv (2,924,50 BTU)
2" NPT Aluminum 2-Way Normally Open Solenoid Valve w/ Jun/Ct Box 60 Cv (2,924,50 BTU)
SKU: JB821483CSA
Asco RedHat
SKU: JB821483CSA
Brand: Asco RedHat
$1,268.67 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1/2", 2 Way Outdoor Reset I-Series Mixing Valve w/ Sensor
1/2", 2 Way Outdoor Reset I-Series Mixing Valve w/ Sensor
SKU: I050C2R-2
Taco
SKU: I050C2R-2
Brand: Taco
$711.05 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 3/4", 3 Way Setpoint I-Series NPT Mixing Valve (Threaded)
3/4", 3 Way Setpoint I-Series NPT Mixing Valve (Threaded)
SKU: I075T3S-1
Taco
SKU: I075T3S-1
Brand: Taco
$529.99 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1/2", 3 Way Outdoor Reset I-Series Mixing Valve w/ Sensor
1/2", 3 Way Outdoor Reset I-Series Mixing Valve w/ Sensor
SKU: I050C3R-1
Taco
SKU: I050C3R-1
Brand: Taco
$749.87 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 3/4", 2 Way Setpoint I-Series Mixing Valve w/ Sensor
3/4", 2 Way Setpoint I-Series Mixing Valve w/ Sensor
SKU: I075T2S-2
Taco
SKU: I075T2S-2
Brand: Taco
$522.40 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1" High Current Brass Flow Switch w/ Flexible Paddles
1" High Current Brass Flow Switch w/ Flexible Paddles
SKU: IFSH1BF-1
Taco
SKU: IFSH1BF-1
Brand: Taco
$222.76 each
In Stock
Get 1 by Thu, Nov 5
In Stock
Get 1 by Thu, Nov 5
Compare
Product Image of 1" High Current Stainless Steel Flow Switch NEMA1 w/ Flexible Paddles (Double Switch)
1" High Current Stainless Steel Flow Switch NEMA1 w/ Flexible Paddles (Double Switch)
SKU: IFSH2SF-1
Taco
SKU: IFSH2SF-1
Brand: Taco
$624.60 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Bonnet for 3/4" Holby Tempering Valve
Bonnet for 3/4" Holby Tempering Valve
SKU: HOL0750-BONNET
Holby
SKU: HOL0750-BONNET
Brand: Holby
$142.18 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Complete Bonnet & Gasket Assembly for 1-1/2" Holby Tempering Valve
Complete Bonnet & Gasket Assembly for 1-1/2" Holby Tempering Valve
SKU: HOL1500-ASSBLY
Holby
SKU: HOL1500-ASSBLY
Brand: Holby
$382.16 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Complete Bonnet & Gasket Assembly for 2-1/2" Holby Tempering Valve
Complete Bonnet & Gasket Assembly for 2-1/2" Holby Tempering Valve
SKU: HOL2500-ASSBLY
Holby
SKU: HOL2500-ASSBLY
Brand: Holby
$612.69 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1" High Temperature Normally Closed Solenoid Air and Water Valve w/ Viton
1" High Temperature Normally Closed Solenoid Air and Water Valve w/ Viton
SKU: HT8210G4V
Asco RedHat
SKU: HT8210G4V
Brand: Asco RedHat
$609.05 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1/2", 2 Way Setpoint I-Series Mixing Valve w/ Sensor
1/2", 2 Way Setpoint I-Series Mixing Valve w/ Sensor
SKU: I050C2S-2
Taco
SKU: I050C2S-2
Brand: Taco
(1)
$526.97 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 3/4", 2 Way Outdoor Reset I-Series Mixing Valve w/ Sensor
3/4", 2 Way Outdoor Reset I-Series Mixing Valve w/ Sensor
SKU: I075T2R-2
Taco
SKU: I075T2R-2
Brand: Taco
$676.38 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 3/8" 0-101# Normally-Closed Explosion-Proof Solenoid Valve (120 VDC)
3/8" 0-101# Normally-Closed Explosion-Proof Solenoid Valve (120 VDC)
SKU: EF8263H118T-12VDC
Asco RedHat
SKU: EF8263H118T-12VDC
Brand: Asco RedHat
$360.14 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1-1/4" N241X5 T&P Relief Valve w/ Flood Sensor Connectivity
1-1/4" N241X5 T&P Relief Valve w/ Flood Sensor Connectivity
SKU: F318825
Watts
SKU: F318825
Brand: Watts
$1,407.16 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1-1/4" x 1-1/2" Model 740 Boiler Pressure Relief Valve w/ Flood Sensor Connectivity (70 psi)
1-1/4" x 1-1/2" Model 740 Boiler Pressure Relief Valve w/ Flood Sensor Connectivity (70 psi)
SKU: F383482
Watts
SKU: F383482
Brand: Watts
(1)
$580.21 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Piston for 1-1/2" Holby Tempering Valve
Piston for 1-1/2" Holby Tempering Valve
SKU: HOL1500-PISTON
Holby
SKU: HOL1500-PISTON
Brand: Holby
$147.97 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Bonnet for 4" Holby Tempering Valve
Bonnet for 4" Holby Tempering Valve
SKU: HOL4000-BONNET
Holby
SKU: HOL4000-BONNET
Brand: Holby
$1,770.66 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 3" Bronze Thermostatic Tempering Valve (Low Temp)
3" Bronze Thermostatic Tempering Valve (Low Temp)
SKU: HOLBY3000LT
Holby
SKU: HOLBY3000LT
Brand: Holby
(1)
$4,678.57 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Bonnet for 1" Holby Tempering Valve
Bonnet for 1" Holby Tempering Valve
SKU: HOL1000-BONNET
Holby
SKU: HOL1000-BONNET
Brand: Holby
$142.18 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Piston for 1-1/4" Holby Tempering Valve
Piston for 1-1/4" Holby Tempering Valve
SKU: HOL1250-PISTON
Holby
SKU: HOL1250-PISTON
Brand: Holby
$127.63 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Piston for 2" Holby Tempering Valve
Piston for 2" Holby Tempering Valve
SKU: HOL2000-PISTON
Holby
SKU: HOL2000-PISTON
Brand: Holby
$213.79 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Piston for 2-1/2" Holby Tempering Valve
Piston for 2-1/2" Holby Tempering Valve
SKU: HOL2500-PISTON
Holby
SKU: HOL2500-PISTON
Brand: Holby
$423.20 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Screw for 2-1/2" Holby Tempering Valve
Screw for 2-1/2" Holby Tempering Valve
SKU: HOL2500-SCREW
Holby
SKU: HOL2500-SCREW
Brand: Holby
$103.60 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1/2" Bronze Thermostatic Tempering Valve
1/2" Bronze Thermostatic Tempering Valve
SKU: HOLBY0500
Holby
SKU: HOLBY0500
Brand: Holby
(1)
$781.43 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 240V Coil for 10E to 26E Normally Open/Normally Closed, and 34E Normally Open Valves
240V Coil for 10E to 26E Normally Open/Normally Closed, and 34E Normally Open Valves
SKU: CF5C15-R1021
Parker Hannifin
SKU: CF5C15-R1021
Brand: Parker Hannifin
$176.87 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of NPT Paddle Flow Switch w/ Conduit Electrical Connection
NPT Paddle Flow Switch w/ Conduit Electrical Connection
SKU: FS-2-CND
Dwyer
SKU: FS-2-CND
Brand: Dwyer
$94.10 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Free Floating Sewage Water SPDT Level Switch (20 ft Cable)
Free Floating Sewage Water SPDT Level Switch (20 ft Cable)
SKU: FSW2-DNPN-20
Dwyer
SKU: FSW2-DNPN-20
Brand: Dwyer
$146.28 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of CHPH15 240V Gold Ring Coil
CHPH15 240V Gold Ring Coil
SKU: CHPH15
Parker Hannifin
SKU: CHPH15
Brand: Parker Hannifin
$97.48 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1" FNPT Push Connect Pressure Regulating Valve for DS05 (LF)
1" FNPT Push Connect Pressure Regulating Valve for DS05 (LF)
SKU: DS05-102-SB-LF
Resideo Braukmann
SKU: DS05-102-SB-LF
Brand: Resideo Braukmann
$94.97 each
In Stock
Get 9 by Tomorrow, Nov 4
In Stock
Get 9 by Tomorrow, Nov 4
Compare
Product Image of 1/4" NPT Explosion Proof Brass Solenoid Air Valve, 3-Way NC, 10-200 PSI (24VAC)
1/4" NPT Explosion Proof Brass Solenoid Air Valve, 3-Way NC, 10-200 PSI (24VAC)
SKU: EF8321G1-24VDC
Asco RedHat
SKU: EF8321G1-24VDC
Brand: Asco RedHat
$922.26 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 3/8" 0-158# Normally-Closed Explosion-Proof Solenoid Valve (120V)
3/8" 0-158# Normally-Closed Explosion-Proof Solenoid Valve (120V)
SKU: EF8263H118T
Asco RedHat
SKU: EF8263H118T
Brand: Asco RedHat
$360.14 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Proof of Closure Hydramotor Actuator with Auxiliary Switch (120V)
Proof of Closure Hydramotor Actuator with Auxiliary Switch (120V)
SKU: H01B252A171
Asco RedHat
SKU: H01B252A171
Brand: Asco RedHat
$3,483.76 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Proof of Closure 2-Way General Purpose Oil Hydramotor Actuator with Auxiliary Switch, 5.5 Cv (120V)
Proof of Closure 2-Way General Purpose Oil Hydramotor Actuator with Auxiliary Switch, 5.5 Cv (120V)
SKU: H0V1B307T171
Asco RedHat
SKU: H0V1B307T171
Brand: Asco RedHat
$6,230.02 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 3/4" Differential Pressure By-Pass Valve - Body Only Install Kit w/ (2) G1 Union Fittings
3/4" Differential Pressure By-Pass Valve - Body Only Install Kit w/ (2) G1 Union Fittings
SKU: H-70530
Webstone
SKU: H-70530
Brand: Webstone
$80.04 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1" Angled Differential Pressure By-Pass Valve - Body Only Install Kit w/ (2) G1 Union Fittings
1" Angled Differential Pressure By-Pass Valve - Body Only Install Kit w/ (2) G1 Union Fittings
SKU: H-70540-A
Webstone
SKU: H-70540-A
Brand: Webstone
$98.69 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1/2" PEX Crimp Brass Thermostatic Mixing Valve w/ Check Valve, For High Temp (Lead Free)
1/2" PEX Crimp Brass Thermostatic Mixing Valve w/ Check Valve, For High Temp (Lead Free)
SKU: H-71272W
Webstone
SKU: H-71272W
Brand: Webstone
$167.20 each
In Stock
Get 1 by Fri, Nov 6 - Mon, Nov 9
In Stock
Get 1 by Fri, Nov 6 - Mon, Nov 9
Compare
Product Image of 3/4" Push-Fit x G1 Brass Union w/ Integral Check Valve (Lead Free)
3/4" Push-Fit x G1 Brass Union w/ Integral Check Valve (Lead Free)
SKU: H-7-6203W-WP
Webstone
SKU: H-7-6203W-WP
Brand: Webstone
$20.45 each
In Stock
Get 3 by Thu, Nov 5
In Stock
Get 3 by Thu, Nov 5
Compare
Product Image of 1/2" Female NPT Solar Thermostatic Mixing Valve w/ Check Valve (Lead Free)
1/2" Female NPT Solar Thermostatic Mixing Valve w/ Check Valve (Lead Free)
SKU: H-72262W
Webstone
SKU: H-72262W
Brand: Webstone
$145.89 each
In Stock
Get 1 by Fri, Nov 6 - Mon, Nov 9
In Stock
Get 1 by Fri, Nov 6 - Mon, Nov 9
Compare
Product Image of 3/4" Sweat x G1 Brass Union (Lead Free)
3/4" Sweat x G1 Brass Union (Lead Free)
SKU: H-7-5103W-WP
Webstone
SKU: H-7-5103W-WP
Brand: Webstone
$22.84 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 3/4" Sweat Vertical Brass Air Separator
3/4" Sweat Vertical Brass Air Separator
SKU: H-75003-V
Webstone
SKU: H-75003-V
Brand: Webstone
$273.79 each
In Stock
Get 1 by Fri, Nov 6 - Mon, Nov 9
In Stock
Get 1 by Fri, Nov 6 - Mon, Nov 9
Compare
Product Image of 24V Coil for 10E to 26E Normally Open/Normally Closed, and 34E Normally Open Valves
24V Coil for 10E to 26E Normally Open/Normally Closed, and 34E Normally Open Valves
SKU: CF5C01-R1021
Parker Hannifin
SKU: CF5C01-R1021
Brand: Parker Hannifin
$194.56 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 120V Coil for 10E to 26E Normally Open/Normally Closed, and 34E Normally Open Valves
120V Coil for 10E to 26E Normally Open/Normally Closed, and 34E Normally Open Valves
SKU: CF5C05-R1021
Parker Hannifin
SKU: CF5C05-R1021
Brand: Parker Hannifin
$176.90 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 208V Coil for 10E to 26E Normally Open/Normally Closed, and 34E Normally Open Valves
208V Coil for 10E to 26E Normally Open/Normally Closed, and 34E Normally Open Valves
SKU: CF5C10-R1021
Parker Hannifin
SKU: CF5C10-R1021
Brand: Parker Hannifin
$194.56 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of Proof of Closure 3-Way Oil Shutoff Hydramotor Actuator with Auxiliary Switch, 3 Cv (120V)
Proof of Closure 3-Way Oil Shutoff Hydramotor Actuator with Auxiliary Switch, 3 Cv (120V)
SKU: H0V13B167T171
Asco RedHat
SKU: H0V13B167T171
Brand: Asco RedHat
$7,580.47 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1/2" MIP x G1 Brass Union w/ Integral Check Valve (Lead Free)
1/2" MIP x G1 Brass Union w/ Integral Check Valve (Lead Free)
SKU: H-7-4202W-WP
Webstone
SKU: H-7-4202W-WP
Brand: Webstone
$17.23 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1/2" FNPT AL Low Lead Automatic Flow Control Balancing Valve (7.00 GPM)
1/2" FNPT AL Low Lead Automatic Flow Control Balancing Valve (7.00 GPM)
SKU: MBP-AL-050F050F07.00
Macon Balancing
SKU: MBP-AL-050F050F07.00
Brand: Macon Balancing
$144.79 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Compare
Product Image of 1/2" FNPT MB Venturi Style Manual Balancing Valve, 0.4-1.3 GPM (2.0 Cv)
1/2" FNPT MB Venturi Style Manual Balancing Valve, 0.4-1.3 GPM (2.0 Cv)
SKU: MBP-MB-050F050FL
Macon Balancing
SKU: MBP-MB-050F050FL
Brand: Macon Balancing
$71.16 each
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
Backorder
Get it by Thu, Dec 3 - Wed, Jan 6
×

Video