Polypipe Polyfast BSP Threaded Reducing Bush (Black) 1.5" x 1" - 4701121

The Polypipe 4701121 is a high-quality polypropylene reducing bush designed to connect 1½″ BSP female threads to 1″ BSP male threads in MDPE water supply systems. Offering excellent resistance to corrosion and chemicals, this lightweight fitting delivers a secure and leak-free connection without the need for welding or adhesives. Ideal for use in potable water, irrigation, and light commercial applications, it ensures fast, reliable installation with WRAS-certified safety.

• Enables direct thread-size reduction from 1½″ BSP female to 1″ BSP male
• Durable polypropylene body – resistant to corrosion, impact, and chemicals
• Easy threaded installation – no specialist tools, sealants, or heat required
• Suitable for cold water mains, sprinkler setups, and agricultural pipelines
• WRAS-approved – safe for use in drinking water systems