A single 4" steel test plug for use with air test kits.
These steel test plugs block pipework to test air tightness. Will fit pipework 94 - 108mm ID with a 37.5mm minimum insertion profile. Zinc-plated to provide 90 hours of salt spray test corrosion resistance.
It is the responsibility of the installer/operator to ensure the maximum allowable back pressure is not exceeded.
To fit pipework: 95 - 108mm ID (internal diameter)
Maximum allowable back pressure: 10psi