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⚡ Upgrade your plumbing game with Caleffi’s pressure relief valve—fast, reliable, and built to last!
The Caleffi Pressure Relief Valve 311501 is a high-quality, stainless steel valve designed to protect plumbing systems by releasing pressure up to 6 bars. It features a 3/4" loose nut to 1/2" BSP connection, allowing quick and easy installation with just one tool. Trusted by professionals and DIYers alike, it comes with a 12-month warranty and is a top-rated solution for efficient pressure regulation in residential and commercial water systems.
| ASIN | B01GFTLTG8 |
| Best Sellers Rank | 48,522 in DIY & Tools ( See Top 100 in DIY & Tools ) 64 in Water Heaters & Parts |
| Brand | Caleffi |
| Customer Reviews | 4.6 out of 5 stars 138 Reviews |
| Exterior Finish | Stainless Steel |
| Exterior finish | Stainless Steel |
| Inlet Connection Size | 1/2 Inches |
| Inlet Connection Type | Female Iron Pipe |
| Inlet connection size | 1/2 Inches |
| Inlet connection type | Female Iron Pipe |
| Manufacturer | Caleffi |
| Manufacturer Warranty Description | 12 months. |
| Material | Metal |
| Maximum Pressure | 6 Bars |
| Model Number | 311501 |
| Number of Ports | 6 |
| Outlet Connection Type | BSPT |
| Outlet connection type | BSPT |
| Part Number | 311501 |
| Size | 3/4 inches |
| Specification Met | CE |
| Thread Size | 3/4 inches |
| Thread Type | NPT |
| Unit Count | 1.0 count |
| Valve Type | Pressure Relief Valve |
A**S
Quick and easy to fit direct replacement.
Genuine quality item. Caleffi Pressure Relief Valve 6-Bar. Ensure your water is off at the main stopcock and the pressure has released from your system - we opened the cold taps to ensure this. plenty of towels at the ready around the area "just in case" but there was only a minor trickle when I removed the original defective unit. Cleaned the surface of the pipework to make sure the 2 would create a seal. Joined and tightened on both sides. Gently brought the water back up to normal pressure and checked for [no] drips. Job done! Allow an hour, but it could be done within 20 mins. Only One tool required for the job. I used an adjustable Wide-Jaw wrench/spanner similar to this one https://amzn.eu/d/j3FKatZ As a Prime member it arrived the same day!
J**.
Cost effective solution
Good solution to replace failed valve without having to change the full valve assembly
A**R
Does the job
Arrived promptly and straightforward to fit. Had worked reliably for over a year now.
D**.
Good quality
Value for money
R**S
Perfect and quite a bit cheaper than local plumbers merchant
Did the job and I think it was half the price of my local plumbers merchant for the exact same thing. Crazy!
G**P
Straight swap for existing
This was very easy to fit since it's identical to the original. Finding which PRV is leaking into the tundish is more difficult !
W**3
PRV
Good value and easy to install. Good quality product.
D**S
Loose nut fitting!
Replaced the leaking one. Was a simple swap. Wasn’t so sure on the loose nut fitting looking at the pictures, description mentioned it was so took a punt on it and it was exactly what was needed.
Trustpilot
3 weeks ago
2 weeks ago