Stopcock Lockshield DZR Compression x Compression 20mm to 32mm

The Stopcock Lockshield DZR Compression x Compression is a stop valve with a lockshield head instead of a handle, so it is turned with a key. The body is DZR brass, and both ends are Compression joints.

Where a Stopcock Lockshield DZR Compression x Compression fits

Sizes like 20mm, 25mm and 32mm match MDPE water pipe, while 15mm and 22mm match copper. That means mixed sizes such as 15X20mm and 22X25mm can join an incoming MDPE main straight onto internal copper at the stop valve. The lockshield head stops casual tampering, which helps in communal areas, schools and commercial buildings.

• Mixed sizes: 15X20mm, 15X25mm and 22X25mm
• Equal sizes: 20X20mm, 25X25mm and 32X32mm
• DZR brass body, key operated
• Compression ends

On the MDPE side, push a liner into the pipe before making the joint, because the soft pipe needs support under the olive. Fit it with the flow arrow pointing into the building, and keep the key where the occupier can find it. DZR brass suits buried or chamber locations better than ordinary brass. For other stopcocks, browse our Stopcocks.

Lockshield stopcocks in Glasgow

Lockshield stopcocks can be collected from 555 South Street, Glasgow G14 0QX. Plumb Parts opens Mon-Fri 8am-5pm and Sat-Sun 8am-1pm, with online orders as well.

Specification

• Material: DZR brass
• Connection: Compression both ends
• Sizes: 15X20mm, 15X25mm, 20X20mm, 22X25mm, 25X25mm and 32X32mm
• Suitable for: Mains water supplies where only a key holder should operate the stopcock

Common Questions

Why are there 20mm, 25mm and 32mm sizes?

Those sizes match plastic MDPE water pipe, often used for underground supplies. Mixed sizes such as 15X25mm join an incoming plastic main to copper inside.

Do I need inserts for plastic pipe?

Yes, fit a pipe insert into the plastic pipe so it cannot squash when the Compression nut is tightened. Without one the joint can pull out or leak.

What is a lockshield stopcock for?

It has no handle, so only someone with the key can turn it. That suits shared buildings, rented flats and public spaces.