The 400mm Drain Stopper is part of a large range of steel drain plugs manufactured from high quality zinc plated steel. The centre locking drain plugs are expanded by the wing nut for pressure testing of drains and sewers. The 400mm Drain Stopper has a 13mm blanking cap that can be replaced with a 13mm Drain Nipple for connecting to pressure testing equipment.

16" Steel Drain Plug - maximum permissible back pressure is 5psi

Pipe Size Internal Nominal Diameter    Will Fit Pipes with Internal Diameter      Metric              Imperial                          Minimum             Maximum                      400mm            16"                                   390mm                 430mm

We ship all of our packages via courier recorded delivery and are happy to provide next working day delivery* of your items. Orders intended for destinations other than the mainland** UK should refrain from ordering online and contact us to arrange your order and delivery costs.

You can find more information on our delivery policy page.