Genuine Siamp Diaphragm Inlet Valve Washer — 34951307
The Siamp 34951307 is the most essential maintenance spare for modern toilet cisterns. As the official diaphragm for the 95, 95L, 99T, and 99B ranges, this washer is the standard component found in high-end suites from Duravit, Laufen, Vitra, and Roca. If your cistern is slow to fill or won't stop running, replacing this 28mm diaphragm is the quickest and most effective fix.
Universal Fitment Guide
- Siamp 95 & 95L
- Siamp 99T & 99B
- All Siamp Ball Valves
- Bottom & Side Inlet Valves
- Duravit & Laufen Suites
- Vitra & Roca Cisterns
- Twyford & Lecico Models
- Standard Siamp Fill Valves
Specifications
- Diameter: 28mm (Overall)
- Depth: 15mm
- Material: High-grade EPDM Rubber
- Part Number: 34951307
Repair vs. Replacement
There is no need to replace the entire inlet valve if it begins to leak. Over time, limescale and debris can perish the rubber diaphragm, preventing a tight seal. Swapping the washer takes less than 5 minutes and saves the cost and hassle of a full valve installation.
Pro Installer Tip: Before fitting the new washer, ensure you rinse out any grit or debris from the valve head. A clean surface ensures the new diaphragm creates an immediate, silent seal.
