PPM Nylon Expanding Pipe Stoppers, also known as drain plugs, are essential tools designed to temporarily seal the end of a pipe or opening for various testing and blocking applications. They 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 comprehensive range of pipe stoppers in different styles and sizes to suit numerous applications. Custom-made pipe stoppers are also available upon request for specific pressure testing requirements. How It Works: The pipe stopper consists of a central spindle/shaft on which two plates are fitted with a natural rubber tyre (ring) between them. A wing nut on the shaft moves the two plates together, compressing the tyre and making the seal in the pipe. These stoppers can also be supplied with a hollow shaft version for screwing on standard hose connections or for using fixed or free nipple caps. Nylon Plugs: The Nylon Expanding Pipe Stopper 1.5" (NES38) is the standard choice for testing the leak tightness of foul water lines at the time of installation. Its versatile design makes it ideal for a number of other applications in the water and gas industries, as well as in all other industries where pipes are used or where holes need to be blocked. The Nylon Expanding Pipe Stopper series is available in sizes ranging from 1.5 - 6" (38 - 150 mm). Specifications for NES38: • Nominal Pipe Size: 1.5" / 38 mm • Internal Pipe Diameter Range: 1.49 - 1.65" / 38 - 42 mm • Minimum Insertion Length: 1.4" / 36 mm • Overall Length: 58 mm • Waterway Diameter: n/a solid • Maximum Allowable Back Pressure: 15 psi / 1 bar • Weight: 1 lbs / 0.05 kg All PPM Nylon Expanding Pipe Stoppers conform to British Standards BS8005 for low pressure testing and sealing of pipes.
