Centre locking drain test plug (drain test bung) with brass wing nut and rubber sleeve. Mechanical expansion design for temporary sealing, water & air pressure testing of drainage, sewer and plumbi
Centre locking drain test plug (drain test bung) with brass wing nut and rubber sleeve. Mechanical expansion design for temporary sealing, water & air pressure testing of drainage, sewer and plumbi
Centre locking drain test plug with brass wing nut and rubber sleeve. Mechanical expansion design for temporary sealing, water & air pressure testing of drainage, sewer and plumbing pipes. Mechanical centre‑locking design, fast on‑site installation, no air pump required, reusable for repeated pipe leak and pressure testing. Solid brass knurled knob & wing nut, anti‑rust and wear‑resistant; zinc‑coated steel pressure plates resist deformation under compression. Suitable for
