32mm MDPE DZR Stopcock

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Given that we're planning to run two showers off a combi I guess we should probably reduce to 28 mm instead of 22 mm, run that to the 1st floor bathroom and then reduce to 22 mm for the en suite on 2nd floor? dynamic pressure ~ voltage at non-zero current (i.e. under the effects of "upstream" supply resistance).

Philmac Stopcock 32mm Black - Jewson

Bathrooms Bathroom Taps Basin Taps Bath Taps Bidet Taps Tap Spares Basins Countertop Basins Wall Hung Basins Semi-Recessed Basins Pedestal Basins Semi-Pedestal Basins Basin Taps Basin Wastes Kitchen Kitchen Taps Kitchen Mixer Taps Instant Hot Water Taps Kitchen Spray Taps Kitchen Pillar Taps This is the problem with having lots of different threads on closely related subjects: I'm fairly sure Shevek said something about his lot wanting their own meter for monitoring purposes separate from the water company's one but maybe it was somebody else and I, for one, can't be bothered to search.Was 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. Includes– Base Plate, Surface Box Munting Plate, Surface Box (embossed with letter “W” and 700mm Tube I think we'll then change to copper (not sure what size yet, probably determined by what kind of meter and softener we can get), then a drain off valve, then the meter. Are non-return valves still needed at the point of entry to the property? I know that there are now a load of reg for non-return valves near things like showers over baths (or more-so if near toilets), but I was under the impression that the requirement had been dropped for NR valves next to the stop tap (except in the case of a shared main - like in flats for example).

32 mm stopcock - Green Building Forum 32 mm stopcock - Green Building Forum

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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. Not so much the location as the material - joints for isolation valves, meters etc are a lot more expensive for MDPE than they are for copper.

STOPCOCK 32X28 | Wolseley PRESTEX PL59A GUNMETAL STOPCOCK 32X28 | Wolseley

Unvented Cylinders Direct Unvented Cylinders Indirect Unvented Cylinders Horizontal Unvented Cylinders Pre-Plumbed Unvented Cylinders Slimline Unvented Cylinders Solar Unvented Cylinders FloPlast's WRAS approved MDPE Systems are suitable for use below ground on cold water services with polyethylene pipes manufactured in accordance with the requirements of BS EN 12201 - 2 (BLUE). FloPlast's manufactures a comprehensive range of polyethylene pipes and fittings for use in potable and non-potable applications.It would seem even stranger to then carry on with 28 mm water pipe after the boiler if the inlet is only 15 mm. Radiators Central Heating Radiators Column Radiators Vertical Column Radiators Horizontal Column Radiators Designer Radiators Vertical Designer Radiators Horizontal Designer Radiators Shower Trays Rectangular Shower Trays Square Shower Trays Quadrant Shower Trays Offset Shower Trays Wet Room Shower Trays Pentangle Shower Trays Shower Tray Accessories

Stopcock Chamber – 20-32mm Stopcocks TALBOT Underground Stopcock Chamber – 20-32mm Stopcocks

Fast, easy installation even in confined spaces, with no tools or dismantling needed. No adjustments required after fitting. Reliable, leakproof connection with collet for high resistance to pull-out. Will not support biological growth. Can be used above ground. These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment. It is possible to have one thread that cover just about everything, there are a few on here, the M one and the W ones spring to mind 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 ! The boiler requires a minimum gas pressure at the gas valve inlet to satisfy the boiler when its on full powerSorry, after the original post, I've moved this to the "Plumbing: how to calculate appropriate sized pipes for dead legs" thread, where its more directly relevant... But for all of this, you need to know your static and dynamic mains pressures, demand sizes, and do some pressure loss calcs, otherwise you're shooting in the dark (and may make your life difficult + waste money by over-sizing stuff). Solar PV Solar PV Panels Solar Panel Inverters Solar Panel Batteries Solar Panel Mounting Solar Panel Accessories re. water supply , not sure why you'd need 28mm but makes sense not to starve/reduce potential flow to the combi DHW cold feed as djh says , to other take offs . so using a larger bore up to boiler would priorities the DHW cold feed. On domestic jobs I general do it in 22mm up to combi boiler.