A contractors pack containing 50 x 15mm isolating valves and 50 x 15mm washing machine valves. Ideal for plumbers working across multiple properties or carrying out volume installations.
This contractors pack gives you 50 x 15mm isolating valves and 50 x 15mm washing machine valves in a single purchase, making it a practical choice for plumbers who cover multiple jobs and do not want to run short mid-week. The 15mm isolating valves are a staple on any domestic or light commercial plumbing job, and buying them in bulk at trade quantity keeps your van stocked without the constant reordering.
Isolating valves at 15mm are used wherever you need a local shut-off without turning off the whole system. Under every sink, beside every toilet, feeding every dishwasher or fridge connection, there will be at least one. On a busy domestic retrofit or a new-build plot, the numbers add up quickly. Having a contractor-quantity pack means you can price jobs confidently, knowing you have the stock to complete them.
15mm Washing Machine Valves in Contractor Quantities
The 15mm washing machine valves in this pack are the standard quarter-turn type used to feed washing machines and dishwashers. They are designed for the kind of repeated use that appliance connections see over their lifetime, and they give the end user a simple local isolation point without needing a plumber back for routine appliance changes.
Washing machine valves are one of those fittings you will always need more of than you think. They go in on every kitchen fit, every utility room, every student flat refurb. Running out of them on a Friday afternoon is a situation best avoided, which is exactly the problem this pack is designed to solve.
Stocking Up for Multiple Properties or Planned Works
Property maintenance contractors, social housing plumbers, and new-build subcontractors all benefit from keeping valve stock at this level. If you are servicing a block of flats or working through a development of houses, having 50 of each on the van means you are not making trips to the merchant between every second job. The pack pricing reflects the trade volume, so the cost per fitting comes down compared to buying in small quantities.
The 15mm size covers the vast majority of domestic pipework in the UK, where 15mm copper or plastic pipe is the standard for appliance and sanitary connections. Both valve types in this pack are compatible with standard 15mm compression fittings, which keeps installation straightforward with no specialist tooling required.
Whether you are kitting out a new van, topping up your workshop stores, or pricing a large maintenance contract, this contractors pack gives you a reliable quantity of two of the most commonly used valves in domestic plumbing, at a price that makes sense when you are buying at volume.
Pro Tip: When fitting isolating valves under sinks or in tight spaces, keep the handle orientation in mind before tightening the compression nut, as rotating the valve body afterwards is a pain you do not need.
15mm isolating valves are fitted throughout domestic and light commercial properties wherever a local shut-off point is needed on a water supply. Common locations include under-sink supplies, toilet cistern feeds, basin taps, radiator circuits, and appliance connections. Washing machine valves are used on every washing machine and dishwasher connection, providing a dedicated isolation point for appliance servicing or replacement.
This pack is particularly useful for volume plumbing work: new-build housing developments, social housing maintenance contracts, buy-to-let property refurbishments, kitchen and bathroom fitting programmes, and planned maintenance schemes across multiple units. Having 50 of each fitting available reduces procurement time and keeps jobs moving without unnecessary delays.
Best For
New-build housing developments
Social housing and property maintenance contracts
Kitchen and bathroom installation programmes
Multi-property landlord refurbishments
Van stock replenishment for plumbing contractors
Compatible With
15mm copper pipe
15mm plastic push-fit and compression systems
Standard UK domestic water supply pipework
Washing machines and dishwashers
Basin, sink, and toilet cistern supplies
Pack Contents
50 x 15mm isolating valves
50 x 15mm washing machine valves
100 fittings total
Standard compression connections
Quarter-turn operation
Not suitable for: Not suitable for 22mm or larger pipework connections. Not intended for gas supply isolation.
Both valve types in this pack use standard 15mm compression connections. Cut the pipe cleanly and squarely, slide on the compression nut and olive, insert the pipe fully into the valve body, and tighten the nut by hand before applying approximately one and a quarter turns with a spanner. Do not overtighten, as this can deform the olive and cause a weeping joint that is awkward to fix once the fitting is in place.
Isolating valves should be installed with the handle accessible, as they will need to be turned off at some point, whether for maintenance or appliance changes. Washing machine valves are typically installed at the rear of the appliance space, so a short service loop in the hose connection is worth allowing for. Check for leaks at working pressure before boxing in or tiling over any pipework.
Turn off the water supply to the section of pipework being worked on and drain down as needed.
Cut the 15mm pipe cleanly and squarely using a pipe slice or pipe cutter.
Deburr the cut end of the pipe to avoid damaging the olive or valve seat.
Slide the compression nut and olive onto the pipe before inserting it into the valve body.
Push the pipe fully into the valve body and hand-tighten the compression nut.
Tighten with a spanner approximately one and a quarter turns, holding the valve body steady with a second spanner to avoid stressing the pipework.
Restore the water supply and check all compression joints for leaks at working pressure before completing the installation.
How many valves are included in this contractors pack?
The pack contains 50 x 15mm isolating valves and 50 x 15mm washing machine valves, giving you 100 fittings in total.
Are these valves compatible with plastic push-fit pipe systems as well as copper?
The valves use standard 15mm compression connections, which are compatible with both 15mm copper pipe and most 15mm plastic pipe systems. Check the plastic pipe manufacturer's guidance on compression fittings if you are unsure, as some plastic pipe types require a liner insert to prevent the olive from deforming the pipe wall.
Can these isolating valves be used on both hot and cold supplies?
Yes, standard 15mm isolating valves of this type are suitable for both hot and cold domestic water supplies. They are not rated for gas supply isolation or high-pressure industrial applications.
The 15mm isolating valves in this pack are quarter-turn ball valves with compression ends, designed for domestic water supply pipework. The washing machine valves are similarly quarter-turn operated and provide a dedicated shut-off for appliance supply hoses via a standard washing machine hose connector. Both valve types are manufactured to suit standard UK 15mm pipe dimensions and are compatible with compression fittings using standard brass olives.
Pipe Size
15mm
Connection Type
Compression
Operation
Quarter-turn
Pack Quantity
50 x isolating valves, 50 x washing machine valves
Total Pack Count
100 fittings
Application
Domestic hot and cold water supply
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