Wisa 2016 / 2136 Flush Valve Seal Diaphragm — Syphon Washer (8035885920)
Genuine-Fit Replacement DIY Friendly Stops Leaks / Weak Flush Cost-Effective Fix
Replacement diaphragm seal (syphon washer) for Wisa 2016 and Wisa 2136 flush valves. An easy, low-cost repair to restore a proper seal and cure running or weak flush issues without replacing the whole valve. Part code: 8035885920.
Compatibility: Designed for Wisa 2016 and Wisa 2136 concealed/cistern flush valves. Check your valve label/stamp and compare the old diaphragm before ordering.
Key features
- Replacement diaphragm/seal for Wisa 2016 / 2136
- DIY fit — simple swap of the worn washer
- Fixes continuous running and weak/slow flush
- Cheaper than a full valve replacement
- Durable elastomer material for a reliable seal
Size & format
- Brand/Series: Wisa 2016 / 2136
- Type: Flush valve diaphragm (syphon washer)
- Part code: 8035885920
- Material: Elastomer/rubber
What’s included
- 1 × Diaphragm seal (syphon washer) — 8035885920
Flush valve body, buttons/plates and other parts are not included.
Check before you buy
- Your cistern uses a Wisa 2016 or Wisa 2136 flush valve
- Your fault is a perished or hardened diaphragm (running/weak flush)
- You only need the seal, not the complete valve
FAQs
Will this fit other Wisa valves?
It is intended for 2016 and 2136. For other models, please check the part code or contact us for advice.
Is it difficult to replace?
Usually a DIY swap: isolate water, remove the valve top, change the diaphragm, reassemble and test. Time varies by cistern access.
Will this stop a constantly running toilet?
If the cause is a worn diaphragm, yes. If not, you may need to inspect the valve seat, inlet valve or debris in the mechanism.