375mm / 15 inch expanding double seal steel pipe stopper, with an expansion range from 370-415mm and a back pressure rating of up to 7psi. This pipe stopper has a 1 inch outlet, and is supplied with a blanking cap as standard.
Double seal steel expanding pipe stoppers are available from stock in a wide range of sizes and they insert further into the pipe offering greater stability when in use also assisting with the centralisation of the stopper in the pipe being tested.
Please see the details of the minimum and maximum pipe internal diameters and back pressure that each size of stopper is suitable for on our download below
Available to purchase with a 1" brass test nipple or a complete air test kit (contains 1/2"/1" brass test nipples). Please select from the options above.
| Nominal Stopper Size | 375mm / 15 Inches |
| Range | 370-415 mm |
| Outlet/Test Nipple Size | 1 inch |
| Back Pressure Rating | 7 psi |
