Solder Ring Reducing Coupler 10mm to 54mm

A Solder Ring Reducing Coupler steps copper pipe down a size in a straight line, and we carry fifteen sizes from 10mm x 8mm up to 54mm x 42mm.

Where it goes

Use it wherever a run changes size, such as dropping 22mm to 15mm for a basin.

Sizes available

• 10mm x 8mm for microbore changes.
• 15mm x 8mm for microbore radiator tails.
• 15mm x 10mm for microbore and small feeds.
• 15mm x 12mm for older 12mm pipework.
• 22mm x 15mm the most common house reducer.
• 28mm x 15mm for a big drop in one fitting.
• 28mm x 22mm for primaries down to 22mm.
• 35mm x 15mm for commercial runs.
• 35mm x 22mm for commercial runs.
• 35mm x 28mm for commercial runs.
• 42mm x 22mm for plant room pipework.
• 42mm x 28mm for plant room pipework.
• 42mm x 35mm for plant room pipework.
• 54mm x 35mm for large mains.
• 54mm x 42mm for large mains.

Fitting tips

Clean and flux both pipes and sockets, push each fully home, and heat the larger end first as it takes longer. Stop when solder shows round both mouths.

Solder ring fittings from our Glasgow counter

Find more in our solder ring fittings range. Collect from Plumb Parts, 555 South Street, Glasgow G14 0QX, or order online. Open Mon-Fri 8am-5pm, Sat-Sun 8am-1pm.

Specification

• Material: Copper
• Connection: Solder ring both ends
• Sizes: 10mm x 8mm, 15mm x 8mm, 15mm x 10mm, 15mm x 12mm, 22mm x 15mm, 28mm x 15mm, 28mm x 22mm, 35mm x 15mm, 35mm x 22mm, 35mm x 28mm, 42mm x 22mm, 42mm x 28mm, 42mm x 35mm, 54mm x 35mm, 54mm x 42mm
• Suitable for: Copper pipe on hot and cold water and heating

Common Questions

How do I fit a solder ring reducing coupler? Check your pipe sizes, clean the pipe ends and the inside of the fitting, flux them and push the pipes fully home. Heat evenly until the solder flows, then let it cool naturally before testing.

Are solder ring reducing couplers any good? Yes, the built-in solder gives a consistent joint without feeding extra solder. This coupler is WRAS approved for drinking water and handles up to 110°C, so it suits heating too.

Can I use a solder ring reducing coupler on gas? This page lists it for copper water and heating pipework. Any gas pipework must be done by a Gas Safe registered engineer, who will choose fittings that suit the job.

What are solder ring fittings? They’re copper fittings with a ring of solder already built into each end. You clean, flux and heat the joint and that solder seals it, so there’s nothing extra to add.

What sizes do solder ring reducing couplers come in? They run from 10mm x 8mm up to 54mm x 42mm, including the everyday 22mm x 15mm and 28mm x 22mm.

How do I choose the right size reducing coupler? Measure the outside diameter of both pipes. The bigger one sets the large end of the coupler and the smaller one sets the reduced end.

Plumb Parts Glasgow

555 South Street
Glasgow
G14 0QX
Tel: 0141 404 5128
Open 7 days
Mon to Fri 8am to 5pm
Sat and Sun 8am to 1pm