Description
The Geberit Type 380 Fill Valve Diaphragm Seal (ref: 240.771.00.1) is the genuine Geberit service part for restoring correct operation to a Type 380 side inlet fill valve. Over time, the diaphragm can harden or calcify, causing the cistern to run continuously, refill slowly, or shut off inconsistently. Replacing this small component is a fast, cost-effective fix that avoids a full valve replacement. Genuine Geberit part — exact fit guaranteed.
Key Features
- Genuine Geberit service part — exact fit for Type 380 side inlet fill valves
- Resolves continuously running or overfilling cisterns
- Fixes slow or incomplete refill after flushing
- Eliminates noisy or erratic fill valve operation caused by a hardened or calcified diaphragm
- Cost-effective repair — extends the life of your existing fill valve
- Geberit part reference: 240.771.00.1
Technical Specification
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Brand: Geberit
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Compatible With: Geberit Type 380 Side Inlet Fill Valve
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Part Reference: 240.771.00.1
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Part Type: Diaphragm Seal
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Genuine Geberit Part: Yes
Complete the Repair
If the diaphragm alone doesn't resolve the issue, you may need to replace the full fill valve:
Frequently Asked Questions
How do I know if this is the right part?
This diaphragm seal is for the Geberit Type 380 side inlet fill valve only. Check your existing valve for the Type 380 marking or refer to your cistern documentation. The Geberit part reference is 240.771.00.1.
Will this fix a continuously running cistern?
In many cases, yes — a hardened or calcified diaphragm is a common cause of a running cistern. Replacing the diaphragm is the recommended first step before replacing the full valve.
Is this a genuine Geberit part?
Yes — this is a genuine Geberit service component, ensuring exact fit and compatibility with Type 380 fill valves.
Can I order if the item shows as out of stock?
Yes — we can still take your order and will advise on lead times. Contact us at customerservice@bubblegumbathrooms.co.uk or call 01603 381095.
