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🛠️ Upgrade your system with Watts — where safety meets precision!
The Watts Sea 66100 100XL-4 is a premium 3/4" bronze T&P relief valve designed for water heaters, offering a maximum operating pressure of 150 psi. Made in the USA, it features a threaded NPT connection for seamless OEM replacement, ensuring reliable pressure relief and long-lasting durability. With a compact design and strong customer approval (4.7/5 stars), it’s the go-to choice for professionals seeking safety and performance.
| ASIN | B002QYIRN0 |
| Best Sellers Rank | #57,397 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #33 in Relief Valves |
| Brand | Watts |
| Brand Name | Watts |
| Connector Type | Threaded |
| Customer Reviews | 4.7 out of 5 stars 164 Reviews |
| Exterior Finish | Bronze |
| Included Components | Watts Sea 66100 100XL-4 3/4" 150 Psi 100Xl-4 T & P Relief Valve |
| Item Dimensions | 1 x 1 x 1 inches |
| Item Type Name | Watts Sea 66100 100XL-4 3/4" 150 Psi 100Xl-4 T & P Relief Valve |
| Item Weight | 4.8 ounces |
| Item dimensions L x W x H | 1 x 1 x 1 inches |
| Manufacturer | Watts Sea |
| Manufacturer Part Number | 66100100XL4 |
| Manufacturer Warranty Description | Warranty |
| Material | Bronze |
| Material Type | Bronze |
| Maximum Operating Pressure | 150 psi |
| Maximum Pressure | 150 psi |
| Model Number | 66100 100XL-4 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 100 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.75 inches |
| Outlet Connection Type | FNPT |
| Set Name | 100XL-4 |
| Size | No Size |
| Specification Met | oem |
| Thread Size | 3/4 in |
| Thread Type | NPT |
| UPC | 098268000016 |
| Unit Count | 1 Count |
| Valve Type | Pressure Relief Valve |
C**N
Good
Worked great. Would buy again.
L**Y
Replaced the relief and it's working well.
This was the replacement that I needed and is working well. Tks I would recommend this item.
G**.
perfect for my RV water heater
It was a perfect fit for my RV water heater and it doesn't leak
A**R
Perfect
Perfect fit. Exact replacement. Leaks after a season. Mainly because its the only way to bleed air from water heater. Cheap item to have for a spare
D**G
Relief Valve
Very easy to install. Great quality.
J**L
Exact fit
Part was exactly what I was wanting to replace my old valve.
B**H
Works fine
It was a replacement and works fine.
N**R
Nice quality, but too short for my water heater
Solid construction, but not long enough for my water heater (mine requires a valve that is 2 inches long to get past the insulation in the side of the tank. This one only extends 1 inch past the corner. Head's up to buy the right one. I'll be looking to return this one. No issues with quality. Just not long enough to reach the threads in the heater.
M**S
It works
It worked
C**N
Awesome
It was exactly what I was looking for. Very prompt delivery. And the price was good too.
Trustpilot
5 days ago
1 week ago