Standard Brass Concealed Stop Cock 1/2 Inch Water Isolation Valve

Standard Concealed Stop Cock

The Standard Brass Concealed Stop is a professional-grade isolation valve engineered for recessed wall installations in domestic and commercial plumbing systems. This 1/2-inch (15mm) fitting allows for localized water control, enabling maintenance on specific fixtures without disrupting the broader network. Its heavy-duty brass construction provides superior resistance to dezincification and internal scaling, ensuring a long service life even in areas with hard water. The unit is designed to integrate seamlessly with standard plumbing rough-ins.

Built for the Job

Site supervisors and plumbing contractors specify this valve for projects requiring a clean, minimalist aesthetic. The internal body remains hidden behind the finished wall, with only the handle and flange visible to the user. This configuration is standard in modern bathrooms, hotels, and high-end residential developments. It provides a reliable shut-off mechanism that withstands high-pressure cycles common in multi-story buildings. The valve body is robust enough to handle the stresses of installation within masonry or timber stud walls.

• Shower system isolation for individual unit maintenance in apartments.

• Concealed cistern water supply control for wall-hung toilets.

• Main shut-off points for vanity units and kitchen sink installations.

Product Highlights

Durable Construction

Cast from high-quality brass to prevent leaks and structural failure under constant water pressure.

Precision Threading

• Features standard 1/2″ BSP female threads for universal compatibility.
• Deep thread engagement ensures a secure, leak-proof connection with pipe adapters.

Technical Specifications

What’s Included

• 1 x 1/2 Inch Concealed Stop Cock Body

• 1 x Decorative Flange/Cover Plate

• 1 x Control Handle

On-Site & Workshop Notes

• When installing this component, verify the depth of the rough-in relative to the finished tile line to ensure the handle engages properly.

• Always perform a static pressure test before closing the wall to confirm there are no leaks at the threaded joints.

• Keep the protective plastic sleeve on the valve during plastering to prevent cement or grout from fouling the internal spindle threads.

• Apply industrial-grade PTFE tape or an approved pipe jointing compound to all threaded connections for a secure seal.