Caleffi - 22mm Inlet Control Multibloc Valve Group 533002CST

Product Information

I presume this safety valve it in case the pressure on the domestic side increases too high for some reason? It incorporates pressure reducing valve, pressure relief valves, check valve, and filter in a single valve design.

But thought best to change the whole thing, and now 6 months later dripping again, to my knowledge not been activated, so annoying faulty again after such short period? They help us to identify popular products and understand your browsing habits so we can display relevant adverts to you. These Caleffi inlet control groups are designed to control the pressure on the mains supply of an unvented hot water cylinder. Or, could your PRV be allowing some flow-by during the night or day when there's no-one running water, and it's allowing the pressure on the domestic side to creep up to the point it drips out the safety valve?Unvented heating system has a caleffi pressure reducing valve, 3 bar with 6 bar safety release valve. Comprised of a pressure reducing valve, a pressure relief valve a check valve and filter all included in a single Monobloc valve.

This multibloc is comprised of a pressure reducing valve, a pressure relief valve, and an internal check valve. I would imagine the safety release valve same as the one on the actual hot water tank are there to act if pressure goes to high. Do you have a anti-'water-hammer' vessel fitted in a place where it could get really hot during the day, enough to cause the pressure to climb?

I'm struggling to think of anything that would cause the 'trapped' domestic side to increase like this.

Caleffi is a decent make, I understand, but these fellows - well, the safety-release-valves - are prone to allowing a drip through after they've been activated. Pressure reducing valves are devices which, when installed on a private plumbing system, reduce and stabilise the inlet pressure from the water mains. Specification Part Number 533112CST, F0001223 gtin 8016615624090 Maximum working Temp 65°C Max Inlet Pressure On Application 12.

Read more about the condition New other (see details): An item in excellent, new condition with no wear. This inlet pressure, in general, is too high and variable for domestic systems to operate correctly. It is designed to protect the unvented cylinder by controlling the main supply pressure that goes to the tank and is not designed to regulate the pressure of the entire property. Another possibility that I forgot to mention is that the expansion vessel could be undersized - if the EV cannot cope with the amount of hot water expansion in the system it will then have to go somewhere else (the PRV).