Expansion Plugs
BES stocks a wide selection of expansion plugs and drain testing solutions for reliable pipe sealing, pressure testing, and maintenance work. Whether you're a professional plumber or contractor, you'll find the right size and type of drain test plug, stopper plug or complete kit to suit your needs.
From durable nylon drain plugs and rubber test plugs with integrated test points to complete drain pressure test kits, we’ve got it all! All at competitive prices with fast UK delivery!
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Choose The Right Plug For The Job
We offer expansion plugs in various diameters and configurations to support domestic and commercial drainage work. Our products are designed for secure sealing and ease of use during system testing or isolation.
Our drain pressure test plugs are ideal for verifying pipework integrity. Available in sizes from 15mm up to 150mm, with either 10mm or 1/2" test points, these plugs provide a tight seal for testing new or existing pipe runs and are suitable for use in water and air pressure testing. Popular options include: Drain Test Plug – 2" (50mm) 1/2" Test Point, Drain Test Plug – 4" (110mm) 1/2" Test Point and Drain Test Plug – 1.1/2" (40mm) 1/2" Test Point.
Perfect for sealing off sections of pipe temporarily, stopper plugs are available in standard pipe sizes from 15mm to 40mm. These are ideal for maintenance, repair, or when pressure testing isn’t required.
Looking for a complete solution? Our kits contain all the key parts for carrying out drain pressure tests. Great for plumbers who need reliable tools for domestic or light commercial jobs. Top choices in the range include the Drain Pressure Test Kit – 43 Piece Set and Domestic Plumber's Drain Test Plug Kit.
Used in conjunction with expansion plugs or for connecting gauges and equipment, drain test nipples are available in multiple sizes, including 1/2", 1", and 2", plus swivel nut options for added flexibility.
Why Shop At BES
With over five decades of experience supplying the trade, BES is trusted for delivering high-quality plumbing and heating products backed by expert knowledge and reliable service.
Order Expansion Plugs & Test Equipment from BES
At BES, we have everything you need to carry out drain testing. All our expanding plugs and testing equipment are sourced from trusted manufacturers and available with next working day delivery.