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 :- 296mm Maximum :- 320mm
• · Minimum Insertion into Pipe :- 85mm
• · Maximum allowable back pressure :- 7 p.s.i.