Item Description
SIAMP Bayonet Strainer with Nut & Seal — 1½″ — 34233907
Genuine SIAMP 1½″ Bayonet Seal & Nut Included
Genuine SIAMP bayonet strainer assembly supplied with the matching back nut and sealing washer. This 1½″ set refreshes the bayonet connection at the base of the flush valve and restores a reliable, watertight seal.
Compatibility: For SIAMP flush valves that use a 1½″ bayonet base. Common applications include: Storm 33A, Skipper 45, Optima 49, Optima 50, Optima S. Please verify your valve family and outlet size before ordering.
Specification
- Size: 1½″ bayonet
- Male thread (approx.): 47.8 mm
- Part code (MPN): 34233907
- Brand: SIAMP
- FTB code: FTB13752
Pack contents
- 1 × Bayonet strainer (1½″)
- 1 × Back nut
- 1 × Sealing washer
Valve body and any additional fixings are not included.
What it fixes
- Leaks at the flush valve base caused by a worn strainer, nut or seal
- Weeping around the cistern outlet after servicing or age-related hardening
Check before you buy
- Your valve is SIAMP and uses a bayonet base (not screw/clip types)
- The outlet size is 1½″ (SIAMP also produce a 2″ version — part 34233307)
Technical summary
| Brand | SIAMP |
| Part / MPN | 34233907 |
| Size / type | 1½″ bayonet base (approx. 47.8 mm male thread) |
| Typical families | Storm 33A, Skipper 45, Optima 49, Optima 50, Optima S |
| Package | Strainer, back nut, sealing washer |
| FTB code | FTB13752 |
FAQs
Is this compatible with 2″ outlets?
No — this listing is for 1½″. The 2″ version is typically 34233307.
Do I need any sealant?
The set includes a sealing washer. Fit clean and dry; use sealant only if specified by your cistern manufacturer.
Will this fix water trickling into the pan?
If the leak is at the base connection, this can help. If water continues to trickle after a flush, the issue may be the internal diaphragm or fill valve level.
Need help figuring out if this product is right for your setup?
Send us your best bathroom selfies (or, you know, just your bathroom setup pics) to [email protected] or WhatsApp 07359 625424 us, and we'll help you flush your confusion away!