The PPM Nylon Expanding Pipe Stopper 3.5" (NES88) is an essential tool designed for temporarily sealing pipe ends or openings in various testing and blocking applications. These robust drain plugs are primarily used to seal off water, gases, and foreign objects in newly installed pipes or during repairs of existing pipe work systems. PPM offers a diverse range of pipe stoppers, available in multiple styles and sizes to suit a wide array of applications, with custom-made options also available for specific pressure testing requirements. This expandable test plug features a clever design consisting of a central spindle/shaft with two fitted plates, sandwiching a natural rubber tyre (ring). A wing nut on the shaft allows for the compression of these plates, which in turn expands the rubber tyre to create a secure and leak-tight seal within the pipe. For enhanced versatility, some stoppers, including this model, can be supplied with a hollow shaft version, enabling connections for standard hoses or the use of fixed or free nipple caps. The Nylon Expanding Pipe Stopper 3.5" is the standard choice for testing the leak tightness of foul water lines during installation. Its extensive range of sizes makes these plugs ideal for numerous applications across the water, gas, and other industries where pipes are utilized or where openings need to be blocked. All PPM Nylon Expanding Pipe Stoppers conform to British Standards BS8005 for low pressure testing and sealing of pipes. SPECIFICATIONS: • Manufacturer Catalog Number: NES88 • Nominal Pipe Size: 3.5" / 88 mm • Internal Pipe Diameter Range: 3.22 - 3.77" / 82 - 96 mm • Minimum Insertion Length: 1.4" / 36 mm • Overall Length: 110 mm • Waterway Diameter: 0.5" bsp • Maximum Allowable Back Pressure: 10 psi / 0.7 bar • Product Weight: 1 lbs / 0.10 kg
