Free shipping on orders over $99
●
Your Zip:
20147
ORDER STATUS
Your Zip:
20147
HELP
MENU
CONTACT & SUPPORT
Live Chat Offline:
Email Us
SIGN IN
0
CART
×
SIGN IN
Shop by Category
Plumbing
Heating
HVAC
PEX
Fittings
Valves
Thermostats
Electrical
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
Filters
Hide Filters
21 items
Reset
SORT
Top Sellers
Default
Price ▲
Price ▼
Product Availability
–
Show
In Stock Only
(10)
Size
–
3/4" (13)
1" (7)
CSA Rating (BTU/HR)
–
100,000 - 199,999 (1)
200,000 - 299,999 (10)
400,000 - 499,999 (3)
500,000 - 599,999 (3)
ASME Rating (BTU/HR)
–
1,000,000 - 1,499,999 (11)
2,000,000 - 2,499,999 (6)
Pressure Set Point
–
125 (2)
150 (18)
Thermostat Length
–
2" (3)
3" (3)
4" (1)
5" (6)
6" (1)
7" (2)
8" (4)
Review Score
–
(7)
Price Range
–
$10 to $15 (1)
$100 to $200 (3)
$200 to $300 (4)
$300 to $400 (7)
$400 to $500 (2)
$500 to $600 (2)
$600 to $700 (1)
$1000 to $1500 (1)
Home
Heating Supplies & Parts
Relief Valves
Temperature & Pressure Relief Valves
Watts 40L & 40XL T&P Relief Valves
Watts 40L & 40XL T&P Relief Valves
Need a little help?
View our Resources
21 items
FILTER
Grid
List
Sort: Default
Order
items
today,
receive
Tuesday
See Details
Resources
Other Resources
Submittal Sheet
Questions?
Closed Now:
Hours
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
Available
9am
Available
9am
Available
9am
Response
by Tue
or check out our
Support Center
Compare
3/4" 40XL-5 Lead Free T&P Relief Valve w/ Flood Sensor Connectivity (125 psi)
SKU:
F556015
Watts
SKU:
F556015
Brand:
Watts
(1)
–
+
$527.60
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
3/4" LF40L-3 Lead Free T&P Relief Valve w/ Flood Sensor Connectivity (150 psi)
SKU:
F121406
Watts
SKU:
F121406
Brand:
Watts
–
+
$365.76
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
3/4" 40XL-5 T&P Relief Valve w/ Flood Sensor Connectivity (125 psi)
SKU:
F156481
Watts
SKU:
F156481
Brand:
Watts
–
+
$349.39
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
3/4" LLL40XL T&P Relief Valve, Lead Free w/ Flood Sensor Connectivity (150 psi)
SKU:
F163803
Watts
SKU:
F163803
Brand:
Watts
–
+
$606.46
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
3/4" 40L-3 T&P Relief Valve (150 psi)
SKU:
0153614
Watts
SKU:
0153614
Brand:
Watts
–
+
$189.84
each
ADD TO CART
Add to List
Get 3 by
Wed, Dec 6
More Available
Inventory Details
Get 3 by
Wed, Dec 6
More Available
Inventory Details
Add to List
Compare
3/4" 40XL-5 Lead Free T&P Relief Valve (150 psi)
SKU:
0556016
Watts
SKU:
0556016
Brand:
Watts
(10)
–
+
$253.44
each
ADD TO CART
Add to List
Get 52 by
Wed, Dec 6
More Available
Inventory Details
Get 52 by
Wed, Dec 6
More Available
Inventory Details
Add to List
Compare
3/4" 40XL-5 T&P Relief Valve (150 psi)
SKU:
0156731
Watts
SKU:
0156731
Brand:
Watts
(10)
–
+
$145.94
each
ADD TO CART
Add to List
Get 4 by
Wed, Dec 6
Get 4 by
Wed, Dec 6
Add to List
Compare
3/4" 40XL-5 T&P Relief Valve w/ Flood Sensor Connectivity (150 psi)
SKU:
F156731
Watts
SKU:
F156731
Brand:
Watts
(10)
–
+
$138.26
each
ADD TO CART
Add to List
Get 15 by
Wed, Dec 6
More Available
Inventory Details
Get 15 by
Wed, Dec 6
More Available
Inventory Details
Add to List
Compare
3/4" 40XL-8 T&P Relief Valve w/ Flood Sensor Connectivity (150 psi)
SKU:
F158774
Watts
SKU:
F158774
Brand:
Watts
–
+
$260.84
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
3/4" LF40XL-8 Lead Free T&P Relief Valve w/ Flood Sensor Connectivity (150 psi)
SKU:
F121421
Watts
SKU:
F121421
Brand:
Watts
–
+
$338.03
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
3/4" 40XL-8 T&P Relief Valve (150 psi)
SKU:
0158774
Watts
SKU:
0158774
Brand:
Watts
–
+
$260.84
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
3/4" 40XL-8 Lead Free T&P Relief Valve (150 psi)
SKU:
0121421
Watts
SKU:
0121421
Brand:
Watts
–
+
$348.72
each
ADD TO CART
Add to List
Get 17 by
Wed, Dec 6
Get 17 by
Wed, Dec 6
Add to List
Compare
3/4" 40XL-M15 Lead Free T&P Relief Valve (150 psi)
SKU:
0121429
Watts
SKU:
0121429
Brand:
Watts
–
+
$577.28
each
ADD TO CART
Add to List
Get 5 by
Wed, Dec 6
More Available
Inventory Details
Get 5 by
Wed, Dec 6
More Available
Inventory Details
Add to List
Compare
1" LF40XL-4 Lead Free T&P Relief Valve (150 psi)
SKU:
0556008
Watts
SKU:
0556008
Brand:
Watts
(3)
–
+
$297.22
each
ADD TO CART
Add to List
Get 17 by
Wed, Dec 6
More Available
Inventory Details
Get 17 by
Wed, Dec 6
More Available
Inventory Details
Add to List
Compare
1" LF40L-2 Lead Free T&P Relief Valve w/ Flood Sensor Connectivity (150 psi)
SKU:
F121409
Watts
SKU:
F121409
Brand:
Watts
–
+
$471.70
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
1" 40L-2 T&P Relief Valve (150 psi)
SKU:
0154830
Watts
SKU:
0154830
Brand:
Watts
–
+
$357.15
each
ADD TO CART
Add to List
Get 1 by
Thu, Dec 7
Get 1 by
Thu, Dec 7
Add to List
Compare
1" 40L-2 T&P Relief Valve w/ Flood Sensor Connectivity (150 psi)
SKU:
F154830
Watts
SKU:
F154830
Brand:
Watts
–
+
$357.15
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
1" 40XL-7 T&P Relief Valve (150 psi)
SKU:
0163765
Watts
SKU:
0163765
Brand:
Watts
(1)
–
+
$321.68
each
ADD TO CART
Add to List
Get 12 by
Wed, Dec 6
More Available
Inventory Details
Get 12 by
Wed, Dec 6
More Available
Inventory Details
Add to List
Compare
1" LF40XL-7 Lead Free T&P Relief Valve (150 psi)
SKU:
0121428
Watts
SKU:
0121428
Brand:
Watts
(1)
–
+
$440.77
each
ADD TO CART
Add to List
Get 22.1 by
Wed, Dec 6
More Available
Inventory Details
Get 22.1 by
Wed, Dec 6
More Available
Inventory Details
Add to List
Compare
1" LFLL40XL Automatic Reseating T&P Relief Valve, Lead Free w/ Flood Sensor Connectivity (150 psi)
SKU:
F121431
Watts
SKU:
F121431
Brand:
Watts
–
+
$1,094.64
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
Compare
100DT 3/4" Drain Tube for Side-Mounted T&P Relief Valves
SKU:
0066125
Watts
SKU:
0066125
Brand:
Watts
–
+
$10.54
each
ADD TO CART
Add to List
Get it by
Thu, Jan 4 - Thu, Feb 1
Get it by
Thu, Jan 4 - Thu, Feb 1
Add to List
FAQs, Manuals & Videos
View Resources
Didn't find what you're looking for?
Let us know
.
Filter & Sort
21 items
Reset
SORT
Top Sellers
Default
Price ▲
Price ▼
Product Availability
–
Show
In Stock Only
(10)
Size
–
3/4" (13)
1" (7)
CSA Rating (BTU/HR)
–
100,000 - 199,999 (1)
200,000 - 299,999 (10)
400,000 - 499,999 (3)
500,000 - 599,999 (3)
ASME Rating (BTU/HR)
–
1,000,000 - 1,499,999 (11)
2,000,000 - 2,499,999 (6)
Pressure Set Point
–
125 (2)
150 (18)
Thermostat Length
–
2" (3)
3" (3)
4" (1)
5" (6)
6" (1)
7" (2)
8" (4)
Review Score
–
(7)
Price Range
–
$10 to $15 (1)
$100 to $200 (3)
$200 to $300 (4)
$300 to $400 (7)
$400 to $500 (2)
$500 to $600 (2)
$600 to $700 (1)
$1000 to $1500 (1)
Clear All
CLOSE
×
Video