20mm MDPE to 15mm Copper Stopcock – Brass Water Main Valve with Pipe Liner

20mm MDPE to 15mm Copper Stopcock – Brass Water Main Valve with Pipe Liner

Features

The 20mm x 15mm brass stopcock provides a heavy-duty transition solution designed specifically to connect a standard 20mm blue MDPE water main directly to a 15mm copper supply pipe. Manufactured from solid, high-grade brass and fully WRAS approved, this stopcock tap ensures safe, reliable control of your mains water supply while meeting strict UK drinking water standards. Furthermore, it features compression fittings with copper olives on both ends for a secure mechanical grip, and includes a dedicated 20mm pipe liner to reinforce the plastic MDPE pipe against distortion under compression. Because you receive a complete, ready-to-install valve kit, you can easily bridge underground MDPE pipes to indoor copper plumbing runs. As a result, you achieve a professional, highly reliable, and leak-free mains water connection.

• Direct MDPE to Copper Transition: Precision-engineered to link a 20mm blue MDPE water supply pipe directly to standard 15mm copper pipework. Therefore, it guarantees a snug, accurate cross-system connection.
• WRAS Approved for Complete Peace of Mind: Fully certified and approved by the Water Regulations Advisory Scheme (WRAS). Consequently, it complies with UK water safety regulations for wholesome drinking water systems.
• Solid Brass Construction: Manufactured from high-strength, durable solid brass. Moreover, it resists corrosion, frost damage, and high water pressure for long-lasting performance.
• Includes 20mm Pipe Liner: Supplied with an essential plastic insert stiffener to reinforce the 20mm MDPE pipe before compression. As a result, it prevents the pipe from collapsing and ensures a permanent watertight seal.
• Reliable Isolation Valve: Features a built-in lever/tap mechanism for easy water flow control and shut-off during maintenance or emergencies. Furthermore, it provides dependable long-term operation.

Technical

• Brand(s): Navigator MSL / Plasson
• MPN(s): BBFST-2015 / 079500020
• Product Type: MDPE to Copper Stopcock / Isolation Valve
• Connection Type: Compression Fit with Copper Olives
• Size Compatibility: 20mm Blue MDPE Water Main to 15mm Copper Pipe
• Material Construction: Solid Brass
• Certification: WRAS Approved
• Included Accessories: 20mm Pipe Liner / Insert Stiffener

Details

Transitioning an incoming underground 20mm blue MDPE water main into an indoor 15mm copper plumbing system requires a robust, certified stopcock that can handle mains pressure without slipping or leaking. Moreover, failing to reinforce plastic MDPE pipe under compression can lead to joint failure over time.

Fortunately, this 20mm to 15mm brass stopcock solves the problem with professional efficiency. Because it combines a solid WRAS-approved brass body, secure compression olives, and a dedicated 20mm pipe liner insert, it locks the MDPE and copper pipes together safely. Consequently, you achieve a clean, secure, and permanent mains water shut-off valve installation.