Siamp Compact 99T BP Telescopic Bottom-Entry WC Filling Valve - 1/2in Brass
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The Siamp Compact 99T BP is a bottom entry WC filling valve with a 1/2 in brass connection. It controls cistern refill using a quiet hydraulic closure and is intended for replacement or original-equipment installation in compatible ceramic or plastic cisterns. Check the inlet position, connection and internal clearance before ordering.
| Brand | Siamp |
| Model | Compact 99T BP |
| Entry position | Bottom entry |
| Connection size | 1/2 in brass |
| Operating pressure | 0.1 to 10 bar |
| Flow rate | 0.23 l/s at 3 bar |
| Dimensions (H × W × D) | 235 to 344 mm high |
| WRAS approved | Yes |
| Manufacturer part no. | 30992110 |
| Pack quantity | 1 |
Set the telescopic height first so the valve top sits below the cistern lid, then fit with the inlet rubber washer inside the cistern. Hand-tighten the backnut to the ceramic and add no more than a quarter turn — over-tightening damages the valve and is not covered by Siamp’s warranty. Use no sealing paste or compound, and no limescale or chlorine cleaners in the cistern. Tap connector not supplied; Siamp requires an approved check valve at the supply connection. Set the water level 20 mm below the overflow with the grey adjusting screw.
Specification sheet (PDF) · Installation manual (PDF) · See related WC cistern parts.
