The Monument Dry Testing Drain Plug in 48mm x 62mm size is the larger option in this range, ideal for medium to larger diameter pipes during testing and repair work. This versatile plug features a convenient 1/2 in BSP outlet, adding extra functionality for professional applications. Operation is simple and effective—place the plug in the pipe end being repaired or replaced and turn the wing nut knob. This depresses the flexible rubber cone, causing it to expand and form a secure watertight seal
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