Compression Washer (Jumper Valve)
Also known as: tap washer, jumper valve, rubber washer
The rubber washer that seals against the tap seat in older compression taps. When the tap is turned, the washer is pressed against the seat to stop water flow.
Inside older pillar taps and outdoor taps, at the bottom of the tap spindle.
Small rubber disc, typically 12 mm or 3/4 inch diameter, black or red. Held onto a brass jumper plate by a small nut.
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Always turn off the water supply before replacing any part. If in doubt, consult a qualified plumber. Gas components must only be worked on by a Gas Safe registered engineer. Unvented (pressurised) hot water systems must be worked on by a G3-qualified engineer. Prices shown are indicative — check retailers for current pricing.