Using a common body and only two sets of interchangeable components, Talbot Pushfit will connect to metric PE pipes and their imperial equivalents It does seem a little strange to go all the way to the boiler in 28mm (or 22mm) only to reduce it on the boiler input to 15mm. but this is common .I presume this last restriction is not considered to have that much effect as long as the main run is sized correctly

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Shower Trays Rectangular Shower Trays Square Shower Trays Quadrant Shower Trays Offset Shower Trays Wet Room Shower Trays Pentangle Shower Trays Shower Tray Accessories jamiehamy was there a reason for using a 32 mm MDPE supply instead of 25mm? Broadly the 25 MDPE pipe has the same internal diameter as 22 copper, and 32 MDPE as 28 copper. You aren't really supposed to expose MDPE to direct sunlight, so you'd normally go from MDPE to copper on entering the house. No, but why give yourself extra work by reducing before the stop-tap? Some utilities want the service MDPE to go in one length from stop tap to stop tap. Boiler Flues & Accessories Boiler Flues Filling Loops Low Loss Headers Flue Guards Plume Kits Flashing Kits Boiler Spares Boiler Filters Commercial Boilers

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Posted By: borpinI went from 32mm to 22 but wish I had gone to 28mm before splitting to H&C of 22mm. Includes– Base Plate, Surface Box Munting Plate, Surface Box (embossed with letter “W” and 700mm Tube Cylinders Vented Cylinders Direct Vented Cylinders Indirect Vented Cylinders Combination Cylinders Stainless Steel Vented Cylinders Copper Vented Cylinders Solar Vented CylindersWas he aware you were using a main pressure DHW combi , I presume he was referring to pipe sizing for a gravity fed/main presuure HW tank of similar.

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say 28kW , so as to create a safe burn , as with all pipework , you get a reduction in pressure relative to friction, resistance . So length of runs , number of bends etc. from gas supply point to boiler need to be calculated and pipes sized accordingly. Posted By: ShevekJames, it's the water pipes I'm referring to (rather than the gas). I presume that in your second paragraph.It would seem even stranger to then carry on with 28 mm water pipe after the boiler if the inlet is only 15 mm. sorry , saw boiler , thought gas !Kitchen Kitchen Taps Kitchen Mixer Taps Instant Hot Water Taps Kitchen Spray Taps Kitchen Pillar Taps