Caleffi - 22mm Inlet Control Multibloc Valve Group 533002CST

Product Information

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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). li>

Technical data:

• Brand - Altecnic
• Product Type - Inlet Control Group Valve Unvented
• Diameter - 22mm
• Connection - 22mm Copper To Copper
• Length - 97mm
• Height - 110mm
• Maximum Working Temp - 65DegreeC
• Pressure Reducing Valve Setting - 3.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.

  Specification Part Number 533112CST, F0001223 gtin 8016615624090 Maximum working Temp 65°C Max Inlet Pressure On Application 12.I presume this safety valve it in case the pressure on the domestic side increases too high for some reason? Unvented heating system has a caleffi pressure reducing valve, 3 bar with 6 bar safety release valve. Read more about the condition New other (see details): An item in excellent, new condition with no wear. The charge in the expansion vessel should be the same as the incoming pressure that is set/ controlled by the pressure reducing valve.

  Comprised of a pressure reducing valve, a pressure relief valve a check valve and filter all included in a single Monobloc valve.Specially shaped diaphragm to give accurate pressure regulation in response to changes in downstream pressure.

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• Specially shaped diaphragm to give accurate pressure regulation in response to changes in downstream pressure. 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. 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. 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.
  
  This includes a specific connection for a balanced cold water take offs and a dedicated connection for an expansion vessel.