450 x 25 mm Centre Locking Drain Stopper Plug Steel

Centre locking plug required for leak testing undergeround pipework prior to them being infilled as per regulations. · · · Expanded from central locking wing nut · · Thrustwashers fitted as standard on all plugs 9 (225mm) & above. · · Zinc plated corrosion resistant to 90 hours salt spray test. · · Combines the economy of price with the strength of steel. · · Carries the Horobin name quality guaranteed. · · Will Fit Pipes With Internal Diameter Minimum :- 448mm Maximum :- 495mm · · Minimum Insertion into Pipe :- 100mm · · Maximum allowable back pressure :- 5 p.s.i.