On Nov 17, 6:44*pm, "N_Cook" wrote:
Which method is more effective at clearing blockage ?
Which method would produce longer interval before a repeat plungering?
upwards power stroke, downwards power stroke , equal up and down

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Diverse Devices, Southampton, England


An overpowerful downstroke could perhaps blow apart the plastic
compression fittings somewhere along the route. In fact you might
even think you cleared the blockage when in fact the sink now
discharges under the floor. I'd go for a hard suck and gentle push.

Robert