Skip to accessibility statement
Free shipping on orders over $99
●
Your Zip:
43230
ORDER STATUS
Your Zip:
43230
HELP
MENU
CONTACT & SUPPORT
Live Chat Offline:
Email Us
SIGN IN
0
CART
×
SIGN IN
Shop by Category
Plumbing
Heating
HVAC
Electrical
PEX
Fittings
Valves
Tools
Resources
Our Team
Account
Order History
Returns
Customer Support
Give Us Feedback
Tools
Reorder
Quick Order
Saved Carts
Lists
Resources
PEX Plumbing
PEX Tools
Radiant Heat
Boiler Room
Plumbing Supplies
Air Conditioning
Video Library
Project Calculators
Find Parts For Your Unit
Filter menu expanded
Filters
Hide Filters
5,231 items
Reset
SORT
Top Sellers
Default
Price ▲
Price ▼
Product Availability
–
Show In Stock Only</strong> Filter (2908)
Show
In Stock Only
(2908)
Brand
–
American Standard Filter (1)
American Standard (1)
Amtrol Filter (14)
Amtrol (14)
AO Smith Filter (1)
AO Smith (1)
Apollo Valves Filter (249)
Apollo Valves (249)
Argo Filter (1)
Argo (1)
Armstrong International Filter (4)
Armstrong International (4)
Armstrong Pumps Filter (1)
Armstrong Pumps (1)
Asco Filter (270)
Asco (270)
Asco RedHat Filter (439)
Asco RedHat (439)
Axiom Filter (1)
Axiom (1)
See More
Product Type
–
Accessory Filter (1)
Accessory (1)
Actuator Filter (15)
Actuator (15)
Adapter Kit Filter (2)
Adapter Kit (2)
Adapter Set Filter (12)
Adapter Set (12)
Air Eliminator Filter (186)
Air Eliminator (186)
Air Flow Switch Filter (2)
Air Flow Switch (2)
Air Scoop Filter (17)
Air Scoop (17)
Air Valve Filter (13)
Air Valve (13)
Air Vent Filter (9)
Air Vent (9)
Airtrol Fitting Filter (9)
Airtrol Fitting (9)
See More
Review Score
–
5 Filter (1010)
(1010)
4 Filter (138)
(138)
3 Filter (31)
(31)
2 Filter (7)
(7)
1 Filter (9)
(9)
Price Range
–
Under $1 Filter (2)
Under $1 (2)
$1 to $5 Filter (27)
$1 to $5 (27)
$5 to $10 Filter (28)
$5 to $10 (28)
$10 to $15 Filter (62)
$10 to $15 (62)
$15 to $20 Filter (88)
$15 to $20 (88)
$20 to $25 Filter (79)
$20 to $25 (79)
$25 to $30 Filter (34)
$25 to $30 (34)
$30 to $35 Filter (45)
$30 to $35 (45)
$35 to $40 Filter (55)
$35 to $40 (55)
$40 to $45 Filter (57)
$40 to $45 (57)
See More
Home
Heating Supplies & Parts
Relief Valves
Hydronic Valves, Controls & Parts
Hydronic Valves, Controls & Parts
5231 items
FILTER
Grid
List
Sort: Top Sellers
34-NR3XLDUPEXF1960 Compare Checkbox
Compare
3/4" Lead Free FNPT Double Union Pressure Reducing Valve w/ ASTM F1960 Male Barbed PEX Tailpiece
SKU:
34-NR3XLDUPEXF1960
Zurn
SKU:
34-NR3XLDUPEXF1960
Brand:
Zurn
–
+
$234.82
each
ADD TO CART
Add to List
In Stock
Get 27 by
Wed, Sep 23
In Stock
Get 27 by
Wed, Sep 23
Add to List
75006 Compare Checkbox
Compare
1-1/2" Air Separator (Sweat)
SKU:
75006
Webstone
SKU:
75006
Brand:
Webstone
–
+
$400.04
each
ADD TO CART
Add to List
In Stock
Get 227 by
Thu, Sep 24 - Fri, Sep 25
In Stock
Get 227 by
Thu, Sep 24 - Fri, Sep 25
Add to List
8210G100-24V Compare Checkbox
Compare
2" General Purpose Solenoid Valve (24v)
SKU:
8210G100-24V
Asco RedHat
SKU:
8210G100-24V
Brand:
Asco RedHat
–
+
$1,335.72
each
ADD TO CART
Add to List
In Stock
Get 2 by
Tue, Sep 22
Total Available: 33
In Stock
Get 2 by
Tue, Sep 22
Total Available: 33
Add to List
H-72274W Compare Checkbox
Compare
1" Female NPT Thermostatic Mixing Valve w/ Check Valve, For High Temp (Lead Free)
SKU:
H-72274W
Webstone
SKU:
H-72274W
Brand:
Webstone
–
+
$215.28
each
ADD TO CART
Add to List
In Stock
Get 1 by
Thu, Sep 24 - Fri, Sep 25
In Stock
Get 1 by
Thu, Sep 24 - Fri, Sep 25
Add to List
ZU0008 Compare Checkbox
Compare
1/2" NPT Backflow Prevention
SKU:
ZU0008
Zilmet
SKU:
ZU0008
Brand:
Zilmet
–
+
$87.37
each
ADD TO CART
Add to List
In Stock
Get 256 by
Fri, Sep 25 - Mon, Sep 28
In Stock
Get 256 by
Fri, Sep 25 - Mon, Sep 28
Add to List
V4295A1130 Compare Checkbox
Compare
Solenoid, Normally Closed Gas Valve, 1-1/4" NPT Pipe Size, 5 PSI Rated
SKU:
V4295A1130
Honeywell
SKU:
V4295A1130
Brand:
Honeywell
–
+
$877.05
each
ADD TO CART
Add to List
In Stock
Get 2 by
Tue, Sep 22
Total Available: 114
In Stock
Get 2 by
Tue, Sep 22
Total Available: 114
Add to List
4120-00 Compare Checkbox
Compare
7/8" ODF Normally Closed Secondary Coolant Valve (5 Cv)
SKU:
4120-00
Parker Hannifin
SKU:
4120-00
Brand:
Parker Hannifin
–
+
$375.35
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 18
In Stock
Get 1 by
Tue, Sep 22
Total Available: 18
Add to List
519709A Compare Checkbox
Compare
1-1/4" NPT Differential Bypass Valve with Sweat Outlet
SKU:
519709A
Caleffi
SKU:
519709A
Brand:
Caleffi
(1)
–
+
$228.15
each
ADD TO CART
Add to List
In Stock
Get 6 by
Tue, Sep 22
Total Available: 8
In Stock
Get 6 by
Tue, Sep 22
Total Available: 8
Add to List
272852 Compare Checkbox
Compare
Power Cord Kit with Adjustable Electronic Timer
SKU:
272852
Asco RedHat
SKU:
272852
Brand:
Asco RedHat
–
+
$45.65
each
ADD TO CART
Add to List
In Stock
Get 1 by
Thu, Sep 24
In Stock
Get 1 by
Thu, Sep 24
Add to List
H-7-5104W-WP Compare Checkbox
Compare
1" Sweat x G1 Brass Union (Lead Free)
SKU:
H-7-5104W-WP
Webstone
SKU:
H-7-5104W-WP
Brand:
Webstone
–
+
$20.94
each
ADD TO CART
Add to List
In Stock
Get 7 by
Tue, Sep 22
Total Available: 10
In Stock
Get 7 by
Tue, Sep 22
Total Available: 10
Add to List
903072P Compare Checkbox
Compare
LAC-5-210 5/8" x 5/8" x 5/8" ODF Head Pressure Control Valve (210 psi)
SKU:
903072P
Parker Hannifin
SKU:
903072P
Brand:
Parker Hannifin
–
+
$590.38
each
ADD TO CART
Add to List
In Stock
Get 3 by
Wed, Sep 23
In Stock
Get 3 by
Wed, Sep 23
Add to List
521333A Compare Checkbox
Compare
3/8" Compression Union Scald Protection 3-Way Thermostatic Mixing Valve, 2 CV (Lead Free)
SKU:
521333A
Caleffi
SKU:
521333A
Brand:
Caleffi
–
+
$112.24
each
ADD TO CART
Add to List
In Stock
Get 1 by
Wed, Sep 23
In Stock
Get 1 by
Wed, Sep 23
Add to List
8214G251-12VDC Compare Checkbox
Compare
1" 2-Way Normally Closed Gas Solenoid Valve (12 VDC)
SKU:
8214G251-12VDC
Asco RedHat
SKU:
8214G251-12VDC
Brand:
Asco RedHat
–
+
$465.02
each
ADD TO CART
Add to List
In Stock
Get 2 by
Wed, Sep 23
In Stock
Get 2 by
Wed, Sep 23
Add to List
H-78203W-Y Compare Checkbox
Compare
3/4" Press Y-Pattern Thermostatic Mixing Valve w/ Gauge
SKU:
H-78203W-Y
Webstone
SKU:
H-78203W-Y
Brand:
Webstone
–
+
$164.59
each
ADD TO CART
Add to List
In Stock
Get 2 by
Wed, Sep 23
In Stock
Get 2 by
Wed, Sep 23
Add to List
M3056 Compare Checkbox
Compare
O-Ring Kit - for 3/4" to 1-1/4" Brass Valves
SKU:
M3056
Tekmar
SKU:
M3056
Brand:
Tekmar
–
+
$43.01
each
ADD TO CART
Add to List
In Stock
Get 2 by
Tue, Sep 22
Total Available: 6
In Stock
Get 2 by
Tue, Sep 22
Total Available: 6
Add to List
5122-008KIT Compare Checkbox
Compare
1/2" NPT Female Union for 5120 Water Temperature Mixing Valve with Gauge (Set of 3)
SKU:
5122-008KIT
Taco
SKU:
5122-008KIT
Brand:
Taco
–
+
$23.08
each
ADD TO CART
Add to List
In Stock
Get 9 by
Fri, Sep 25 - Mon, Sep 28
In Stock
Get 9 by
Fri, Sep 25 - Mon, Sep 28
Add to List
H-75404 Compare Checkbox
Compare
1" Sweat Hydraulic Separator
SKU:
H-75404
Webstone
SKU:
H-75404
Brand:
Webstone
–
+
$707.64
each
ADD TO CART
Add to List
In Stock
Get 1 by
Thu, Sep 24 - Fri, Sep 25
In Stock
Get 1 by
Thu, Sep 24 - Fri, Sep 25
Add to List
08FS3C2340ACF Compare Checkbox
Compare
1/2" Gold Ring Series 2-Way Normally Closed Pilot Operated Solenoid Valve (4 Cv)
SKU:
08FS3C2340ACF
Parker Hannifin
SKU:
08FS3C2340ACF
Brand:
Parker Hannifin
–
+
$274.41
each
ADD TO CART
Add to List
In Stock
Get 2 by
Wed, Sep 23
In Stock
Get 2 by
Wed, Sep 23
Add to List
88006878 Compare Checkbox
Compare
1" LFN45BM1-DU-PR Pressure Reducing Valve (Press)
SKU:
88006878
Watts
SKU:
88006878
Brand:
Watts
–
+
$373.55
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Add to List
626009 Compare Checkbox
Compare
Replacement Paddle Assembly for 626 Universal Flow Switch (Stainless Steel)
SKU:
626009
Caleffi
SKU:
626009
Brand:
Caleffi
–
+
$22.28
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 5
In Stock
Get 1 by
Tue, Sep 22
Total Available: 5
Add to List
310468P Compare Checkbox
Compare
PKC-1-24DC Solenoid Coil for Normally Closed Refrigeration Solenoid Valves (24 VDC)
SKU:
310468P
Parker Hannifin
SKU:
310468P
Brand:
Parker Hannifin
–
+
$137.07
each
ADD TO CART
Add to List
In Stock
Get 7 by
Wed, Sep 23
Total Available: 12
In Stock
Get 7 by
Wed, Sep 23
Total Available: 12
Add to List
V6EPB-B-S-LF Compare Checkbox
Compare
1/2" NPT Low-Flow Flotect Explosion-Proof Mini-Size Brass SPDT Flow Switch, w/ Brass Tee
SKU:
V6EPB-B-S-LF
Dwyer
SKU:
V6EPB-B-S-LF
Brand:
Dwyer
–
+
$379.52
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 3
In Stock
Get 1 by
Tue, Sep 22
Total Available: 3
Add to List
31403-FD Compare Checkbox
Compare
1-1/4" Sweat Tailpiece for 548097A
SKU:
31403-FD
Caleffi
SKU:
31403-FD
Brand:
Caleffi
–
+
$56.15
each
ADD TO CART
Add to List
In Stock
Get 4 by
Tue, Sep 22
Total Available: 14
In Stock
Get 4 by
Tue, Sep 22
Total Available: 14
Add to List
HOLBY2000LT Compare Checkbox
Compare
2" Bronze Thermostatic Tempering Valve (Low Temp)
SKU:
HOLBY2000LT
Holby
SKU:
HOLBY2000LT
Brand:
Holby
(1)
–
+
$1,985.68
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 5
In Stock
Get 1 by
Tue, Sep 22
Total Available: 5
Add to List
24F24C2180AAFR Compare Checkbox
Compare
24F24C2180AAFR Gold Ring Solenoid Valve Repair Kit
SKU:
24F24C2180AAFR
Parker Hannifin
SKU:
24F24C2180AAFR
Brand:
Parker Hannifin
–
+
$236.29
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Add to List
82100 Compare Checkbox
Compare
1/2" ProPress Manual Balancing Valve, Flow Range (GPM): 0.27-0.71
SKU:
82100
Viega
SKU:
82100
Brand:
Viega
–
+
$150.58
each
ADD TO CART
Add to List
In Stock
Get 2 by
Wed, Sep 23
In Stock
Get 2 by
Wed, Sep 23
Add to List
1725D1A-INVERTED Compare Checkbox
Compare
Inverted Fixed Point Manifold Mixing Station w/ UPS15-58FC Pump (4 Loops)
SKU:
1725D1A-INVERTED
Caleffi
SKU:
1725D1A-INVERTED
Brand:
Caleffi
–
+
$1,300.34
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 7
In Stock
Get 1 by
Tue, Sep 22
Total Available: 7
Add to List
5002-T3-G Compare Checkbox
Compare
1/2" NPT Union 5002 Mixing Valve w/ Gauge (Low Lead)
SKU:
5002-T3-G
Taco
SKU:
5002-T3-G
Brand:
Taco
–
+
$157.63
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Add to List
5123-C2-G Compare Checkbox
Compare
3/4" Sweat Union 5123 Mixing Valve w/ Gauge (Low Lead)
SKU:
5123-C2-G
Taco
SKU:
5123-C2-G
Brand:
Taco
–
+
$181.84
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Add to List
23449-CASH-ACME Compare Checkbox
Compare
PRV Tailpiece Kit, Lead Free (3/4" NPT)
SKU:
23449-CASH-ACME
Cash-Acme
SKU:
23449-CASH-ACME
Brand:
Cash-Acme
–
+
$6.69
each
ADD TO CART
Add to List
In Stock
Get 1 by
Thu, Sep 24
In Stock
Get 1 by
Thu, Sep 24
Add to List
MBP-AB-050RF050F0.50 Compare Checkbox
Compare
1/2" FNPT AB Automatic Flow Control Balancing Valve (0.50 GPM)
SKU:
MBP-AB-050RF050F0.50
Macon Balancing
SKU:
MBP-AB-050RF050F0.50
Brand:
Macon Balancing
–
+
$166.72
each
ADD TO CART
Add to List
In Stock
Get 3 by
Tue, Sep 22
Total Available: 5
In Stock
Get 3 by
Tue, Sep 22
Total Available: 5
Add to List
H-78544-A Compare Checkbox
Compare
1" Press Angled Differential Pressure By-Pass Valve
SKU:
H-78544-A
Webstone
SKU:
H-78544-A
Brand:
Webstone
–
+
$110.81
each
ADD TO CART
Add to List
In Stock
Get 2 by
Tue, Sep 22
Total Available: 3
In Stock
Get 2 by
Tue, Sep 22
Total Available: 3
Add to List
304-394 Compare Checkbox
Compare
Valve Repair Kit for 8220 Series
SKU:
304-394
Asco
SKU:
304-394
Brand:
Asco
–
+
$393.54
each
ADD TO CART
Add to List
In Stock
Get 4 by
Wed, Sep 23
In Stock
Get 4 by
Wed, Sep 23
Add to List
1061516 Compare Checkbox
Compare
1" FNPT x 1-1/4" FNPT RVW61 3,381,000 BTU Bronze Hot Water Relief Valve (80 psi)
SKU:
1061516
Apollo Valves
SKU:
1061516
Brand:
Apollo Valves
–
+
$424.18
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Add to List
H-73273W Compare Checkbox
Compare
3/4" Expansion PEX Brass Thermostatic Mixing Valve w/ Check Valve, For High Temp (Lead Free)
SKU:
H-73273W
Webstone
SKU:
H-73273W
Brand:
Webstone
–
+
$171.46
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 2
In Stock
Get 1 by
Tue, Sep 22
Total Available: 2
Add to List
1725D1AHE-INVERTED Compare Checkbox
Compare
Fixed Point Inverted Manifold Mixing Station w/ Alpha 25-55U Pump (4 Loops)
SKU:
1725D1AHE-INVERTED
Caleffi
SKU:
1725D1AHE-INVERTED
Brand:
Caleffi
–
+
$1,298.48
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 4
In Stock
Get 1 by
Tue, Sep 22
Total Available: 4
Add to List
0009391 Compare Checkbox
Compare
1-1/4" C x FNPT LF25AUB-S-Z3 Water Pressure Reducing Valve, 25-75 psi (Lead Free)
SKU:
0009391
Watts
SKU:
0009391
Brand:
Watts
–
+
$829.95
each
ADD TO CART
Add to List
In Stock
Get 12 by
Tue, Sep 22
Total Available: 13
In Stock
Get 12 by
Tue, Sep 22
Total Available: 13
Add to List
8262H212 Compare Checkbox
Compare
1/4" NPT Normally Closed 2-Way Solenoid Valve (120/60AC)
SKU:
8262H212
Asco RedHat
SKU:
8262H212
Brand:
Asco RedHat
–
+
$200.88
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 9
In Stock
Get 1 by
Tue, Sep 22
Total Available: 9
Add to List
TP1100AE-3C-150C Compare Checkbox
Compare
T&P Relief Valve, MNPT x FNPT, 3" Probe, Set at 150
SKU:
TP1100AE-3C-150C
Zurn
SKU:
TP1100AE-3C-150C
Brand:
Zurn
–
+
$47.99
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
In Stock
Get 1 by
Tue, Sep 22
Add to List
DS06-104-SUP-LF Compare Checkbox
Compare
1-1/2" DS06 DialSet Pressure Regulating Valve w/ Single Union Press Fittings (Lead Free)
SKU:
DS06-104-SUP-LF
Resideo Braukmann
SKU:
DS06-104-SUP-LF
Brand:
Resideo Braukmann
–
+
$488.91
each
ADD TO CART
Add to List
In Stock
Get 8 by
Tue, Sep 22
Total Available: 13
In Stock
Get 8 by
Tue, Sep 22
Total Available: 13
Add to List
F29636 Compare Checkbox
Compare
Thermostatic Sensor Cartridge - 160°F
SKU:
F29636
Caleffi
SKU:
F29636
Brand:
Caleffi
–
+
$31.04
each
ADD TO CART
Add to List
In Stock
Get 4 by
Wed, Sep 23
In Stock
Get 4 by
Wed, Sep 23
Add to List
V11HBA-100 Compare Checkbox
Compare
3-Way Solenoid Air Valve (220/240V)
SKU:
V11HBA-100
Johnson Controls
SKU:
V11HBA-100
Brand:
Johnson Controls
–
+
$357.53
each
ADD TO CART
Add to List
In Stock
Get 5 by
Wed, Sep 23
In Stock
Get 5 by
Wed, Sep 23
Add to List
AH2E112A Compare Checkbox
Compare
Standard Watertight Fast Opening Hydramotor Actuator (110/120V)
SKU:
AH2E112A
Asco RedHat
SKU:
AH2E112A
Brand:
Asco RedHat
–
+
$5,098.42
each
ADD TO CART
Add to List
In Stock
Get 1 by
Wed, Sep 23
In Stock
Get 1 by
Wed, Sep 23
Add to List
8215B50-24V Compare Checkbox
Compare
1" Aluminum Solenoid Air Valve, 1,119,000 BtuH Max (24v)
SKU:
8215B50-24V
Asco RedHat
SKU:
8215B50-24V
Brand:
Asco RedHat
–
+
$602.59
each
ADD TO CART
Add to List
In Stock
Get 16 by
Wed, Sep 23
In Stock
Get 16 by
Wed, Sep 23
Add to List
R31981 Compare Checkbox
Compare
1/2" NPT Male Tail Piece
SKU:
R31981
Caleffi
SKU:
R31981
Brand:
Caleffi
–
+
$9.42
each
ADD TO CART
Add to List
In Stock
Get 1 by
Fri, Sep 25
In Stock
Get 1 by
Fri, Sep 25
Add to List
F278480 Compare Checkbox
Compare
2" 174A Relief Valve w/ Flood Sensor Connectivity (125 psi)
SKU:
F278480
Watts
SKU:
F278480
Brand:
Watts
(5)
–
+
$1,249.09
each
ADD TO CART
Add to List
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Backorder
Get it by
Tue, Oct 20 - Tue, Nov 17
Add to List
523166A Compare Checkbox
Compare
1" Press MixCal High Flow 3-Way Thermostatic Mixing Valve
SKU:
523166A
Caleffi
SKU:
523166A
Brand:
Caleffi
–
+
$1,344.73
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 5
In Stock
Get 1 by
Tue, Sep 22
Total Available: 5
Add to List
4061-00 Compare Checkbox
Compare
1-1/8" ODF ME35S190-HP Normally Closed Solenoid Valve Less Coil
SKU:
4061-00
Sporlan
SKU:
4061-00
Brand:
Sporlan
–
+
$740.73
each
ADD TO CART
Add to List
In Stock
Get 1 by
Tue, Sep 22
Total Available: 10
In Stock
Get 1 by
Tue, Sep 22
Total Available: 10
Add to List
1
...
45
46
47
...
109
Refresh
×
Video