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The Caleffi Multibloc Cold Water Control Valve 533112CST is a high-quality copper pressure valve designed for unvented hot water cylinders. Featuring a 3.0 bar pressure reducing valve and a 6.0 bar pressure relief valve, it ensures optimal pressure regulation and system safety. With 22mm copper connections and compliance with CE, RoHS, and EN standards, it offers a durable, easy-to-install replacement solution trusted by professionals.
| ASIN | B07SPFB6CK |
| Best Sellers Rank | 18,472 in DIY & Tools ( See Top 100 in DIY & Tools ) 123 in Central Heating System Accessories |
| Brand | Caleffi |
| Connector Type | Compression |
| Country of Origin | United Kingdom |
| Customer Reviews | 4.7 out of 5 stars 167 Reviews |
| Exterior Finish | Copper |
| Exterior finish | Copper |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | Cutting Ring |
| Inlet connection size | 0.5 Inches |
| Inlet connection type | Cutting Ring |
| Manufacturer | Caleffi |
| Material | Copper |
| Maximum Pressure | 6 Bars |
| Model Number | 533112CST |
| Number of Items | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.5 Inches |
| Outlet Connection Type | Compression |
| Outlet connection type | Compression |
| Part Number | 533112CST |
| Set Name | Multibloc |
| Size | 0.5 inches |
| Specification Met | CE, RoHS, EN 1074-1, EN 1074-2 |
| Thread Size | 22mm |
| Thread Type | BSP |
| UPC | 708747448535 |
| Unit Count | 1.0 count |
| Valve Type | Pressure Relief Valve |
D**R
good product
it was a direct replacement and fitted exactly and worked well
T**T
no more leaks
a perfect like for like replacement for my dripping valve . It has been reconfigured from the original in that the 15mm outflow pipe is an easier connection due to it now being a swivel connector. Since there are three 22mm pipes to hook up and the 15mm outflow you would probably otherwise need a 'union' to be able to make the connection to the tundish. Worked great and an easy fit ......
E**.
COLD WATER CONTROL VALVE
GOOD JOB REPLACEMENT, FAST DELIVERY
R**D
Part worked ok
It did work ok
C**M
Replaced leaking unit like for like - system watertight again
Original 533112CST lasted about 5 years before starting to leak, as observed in the tundish. It turns out the plumber had installed the old unit with the pressure relief valve circlip facing the wall so had little choice but to buy a complete new unit in order to get the water back on sharpish. FYI on inspecting the original unit it looks like limescale buildup was the cause and could have been repaired with just a new PRV (if you could access the circlip) which would've been just over half price OR, if you're up for a gamble, disassemble the old PRV, descale, reassemble, whack it back in and see what happens...
H**N
Genuine Part
Bought this to replace a valve on the central heating that developed a leak. An exact replacement that’s well engineered. Great product
G**G
Works well
Good bit of kit for half the price of some alternatives and does the same job Pleased
A**R
super fast service works perfectly
Updated: the valve is NOT the issue, the issue is my water tank that has a built in expansion that has issues so seems like every year for now I need to replace this valve. So my previous feedback was incorrect. Thank you for the item again and super fast delivery already installed too.
Trustpilot
2 weeks ago
4 days ago