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Dhw Pressure Differential Valve
Dhw Pressure Differential Valve. They react as soon as the water tap is opened and maintain a low and constant differential pressure across the thermostatic control valve. Discussion in 'plumbing and central heating' started by chef, 14 nov 2005.

Fits potterton performa 24 & 28 boilers. This particular boiler has a preheat function which stores preheated hot water in a store build into expansion vessel. Always silicone grease any push rods during reassembly.
Baxi 248734 Valve Differential Dhw.
New (2) from £54.11 & free delivery. It is due to a pressure differential switch design and a part required for repair is sold in a kit called ‘domestic hot water diaphragm kit’ baxi, potterton or main number 5111137. It allows the hot water to be redirected to the heating system (radiators, etc.) or to the domestic hot water system (taps, etc.).
Ensure The Dhw Pressure Differential Valve Is Securely Screwed Back On To The 3 Way Valve (2 Grub Screws).
For bigger flows, avtb thermostats can be used both for instantaneous dhw and heating. Baxi 248734 valve differential dhw. Client described problem as follows:
Dhw Flow Temperatures And Flow Rates Shall Be Controlled.
The diaphragm in the dhw pressure differential valve is the first (easy) item to exchange. Baxi / main / potterton domestic hot water pressure differential valve. This boiler has a dhw pressure differential valve and 3 way diverter operated by electric actuator.
Discussion In 'Plumbing And Central Heating' Started By Chef, 14 Nov 2005.
Motor black/white inc clip baxi part n o. Fits baxi combi 105e & 105he boilers. This particular boiler has a preheat function which stores preheated hot water in a store build into expansion vessel.
The Differential Valve Obviously Isn't Getting Enough Pressure Differential, Which Must Mean The Restrictor Isn't Restricting Enough, And Yet The Restrictor Looks To Be In Good Condition.
The main combi 30he boiler diverter valve is a valve that opens and closes to supply hot water to go to either the central heating radiators or the domestic hot water systems taps and showers. So that the solution is as you have suspected. Optimum idle temperature control is ensured.
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