The Stopcock MDPE Poly Brass VSP (25mm x 15mm) is an essential utility control valve designed to provide a secure transition and shut-off point between an external 25mm MDPE (Medium Density Polyethylene) underground water supply pipe and internal 15mm copper or plastic plumbing. Ideal for domestic boundary boxes, main water entry points, and utility rooms, this valve allows installers to reliably isolate the main water supply to a building when required for maintenance, repairs, or emergencies.
 
Manufactured from high-grade, corrosion-resistant brass with robust compression and grip ring mechanisms, the fitting complies with relevant water supply industry regulations (such as WRAS-approved specifications). It features a secure compression connection on the 25mm MDPE side—complete with a supportive plastic pipe liner to prevent the polyethylene tube from collapsing under pressure—and a standard compression joint on the 15mm side, ensuring a watertight, high-pressure seal without the need for specialized welding.
 
Engineered for durability and ease of operation by professional plumbers and certified utility installers, the stopcock incorporates a smooth-turning manual handle or spindle mechanism. Whether you are connecting a new-build property to the main water supply, stepping down an incoming utility line to feed an isolated internal circuit, or upgrading a domestic water intake system, this trade-quality brass stopcock delivers dependable flow control, excellent longevity, and complete regulatory compliance.