

♨️ Elevate your system with Watts — where power meets precision!
The Watts 3/4LFN36-M2 0556031 is a compact, lead-free vacuum relief valve crafted from durable brass. Designed for professional-grade plumbing, it supports steam pressures up to 15 psi and temperatures up to 250°C, ensuring reliable performance in demanding environments. With a sleek low-profile design and top-tier certifications, it’s the trusted choice for millennial managers who value efficiency and safety.









| ASIN | B007VHIEMG |
| ASIN | B007VHIEMG |
| Batteries Included? | No |
| Batteries Required? | No |
| Customer Reviews | 4.9 4.9 out of 5 stars (97) |
| Customer reviews | 4.9 4.9 out of 5 stars (97) |
| Date First Available | 14 August 2013 |
| Date First Available | 14 August 2013 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 113 g |
| Item model number | Watts LFN36-M1 |
| Item model number | Watts LFN36-M1 |
| Manufacturer | Watts |
| Manufacturer | Watts |
| Material | Brass |
| Part number | 556031 |
| Product Dimensions | 2.54 x 2.54 x 2.54 cm; 113.4 g |
| Product Dimensions | 2.54 x 2.54 x 2.54 cm; 113.4 g |
| Size | 0.75 Inch |
| Specification met | CSA, ANSI Z21.22 |
K**.
This low-profile vacuum relief valve was exactly what I needed for my water heater setup. It installed easily, sealed tightly, and immediately gave me peace of mind knowing the pressure relief is working as it should. The compact, low-profile design is great for tight spaces and doesn’t get in the way. No leaks, no issues, just solid performance. Great quality and a small but important upgrade for any tank system!
T**R
Good quality, happy with its function.
J**A
Simple screw in installation once you have your line teed. Allows air to enter to ensure water doesn't leave the tank and so far appears to do it's job. I bought a spare to keep around as I feel it's one of those things that may decide to go bad at some point and it doesn't appear you can buy this at any of the box or hardware stores around me
R**Y
I drove all over town to find one of these but none of the pluming supply stores had one in stock. I came home and found this one on Amazon and had it the next morning. This solved my leak problem.
G**Y
as described, prompt delivery would buy again
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