--- product_id: 49915371 title: "32500007 Optima 50 Flushing Mechanism, White" brand: "siamp" price: "£27.75" currency: GBP in_stock: true reviews_count: 13 category: "Siamp" url: https://www.desertcart.co.uk/products/49915371-32500007-optima-50-flushing-mechanism-white store_origin: GB region: United Kingdom --- # Adjustable height & overflow for perfect fit Universal fit, no cistern removal needed Dual flush valve for water efficiency 32500007 Optima 50 Flushing Mechanism, White **Brand:** siamp **Price:** £27.75 **Availability:** ✅ In Stock ## Summary > 🚽 Upgrade your flush game—effortless, efficient, essential! ## Quick Answers - **What is this?** 32500007 Optima 50 Flushing Mechanism, White by siamp - **How much does it cost?** £27.75 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/49915371-32500007-optima-50-flushing-mechanism-white) ## Best For - siamp enthusiasts ## Why This Product - Trusted siamp brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tailored Fit:** Adjust height and overflow settings to customize performance for your toilet model. - • **Built to Last:** WRAS approved with a 10-year warranty—durability you can trust. - • **Effortless Upgrade:** Swap your flush valve in minutes without removing the cistern—no plumber needed. - • **Eco-Smart Dual Flush:** Save water and reduce bills with precision dual flush technology. - • **Universal Compatibility:** Pre-fitted in top brands like Vitra, Twyford, and Roca for seamless integration. ## Overview The Siamp 32500007 Optima 50 is a WRAS-approved dual flush valve designed for easy replacement without removing the cistern. Compatible with major brands, it features adjustable height and overflow settings for a perfect fit, ensuring water efficiency and long-lasting performance backed by a 10-year warranty. ## Description From the manufacturer SIAMP Optima 50, 470mm Cable Can be installed into plastic or ceramic cisterns Push button: dual flush Actuation effort below 20N For lid holes ranging from 16 to 50mm, with or without collar depending on diameter Cable operated: allows an actuation at distance, lateral or head-on position Overflow can be cut in increments of 4mm Adjustable small flush from 2l to 4.5l Adjustable dead water level High flush rate of 3.5l / s Foam pan seal supplied for compensating pan irregularity Review: Sorry plumbers - Saved a fortune. Watched a clip on how to replace the toilet valve , ordered the valve and fitted it myself. All very easy and saved myself a large plumbers bill. Good product, well made and reasonably priced. Review: Perfect purchase - I didn't want to break the toilet bowl and tank. Perfect, fits perfectly! Great that I found it! ## Features - WRAS Approved - Flush valve pre-fitted in products by Vitra, Twyford, Lecico, Roca and many more - Replace an existing Siamp flush valve with ease, without the need to remove the cistern from the wc pan - Dual flush - Adjustable height & overflow ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00VX68DIG | | Best Sellers Rank | 5,662 in DIY & Tools ( See Top 100 in DIY & Tools ) 12 in Toilet Parts | | Brand | SIAMP | | Country of Origin | France | | Customer Reviews | 4.5 out of 5 stars 2,411 Reviews | | Exterior Finish | Plastic | | Exterior finish | Plastic | | Included Components | 1 x Flushing Mechanism | | Inlet Connection Size | 1.5 Inches | | Inlet Connection Type | Female Iron Pipe | | Inlet connection size | 1.5 Inches | | Inlet connection type | Female Iron Pipe | | Item Dimensions | 9 x 12 x 27.5 centimetres | | Item Type Name | Siamp 32500007 Optima 50 Flushing Mechanism | | Item dimensions L x W x H | 9 x 12 x 27.5 centimetres | | Manufacturer | SIAMP | | Manufacturer Warranty Description | 10 year. | | Material | Ceramic , Plastic | | Model Number | 03247230071302 | | Number of Pieces | 1 | | Number of Ports | 3 | | Outlet Connection Size | 1.5 Inches | | Outlet Connection Type | FNPT | | Part Number | 32500007 | | Size | 27.5 cm | | Thread Size | 38mm | | Thread Type | BSP | | Unit Count | 1.0 count | | Valve Type | Dual Flush Valve | ## Product Details - **Brand:** SIAMP - **Exterior finish:** Plastic - **Inlet connection size:** 1.5 Inches - **Inlet connection type:** Female Iron Pipe - **Item dimensions L x W x H:** 9 x 12 x 27.5 centimetres - **Material:** Ceramic, Plastic - **Number of Packs:** 1 - **Number of ports:** 3 - **Outlet connection size:** 1.5 Inches - **Outlet connection type:** FNPT ## Images ![32500007 Optima 50 Flushing Mechanism, White - Image 1](https://m.media-amazon.com/images/I/51NWVoFGXBL.jpg) ![32500007 Optima 50 Flushing Mechanism, White - Image 2](https://m.media-amazon.com/images/I/71Aez-4RBDL.jpg) ![32500007 Optima 50 Flushing Mechanism, White - Image 3](https://m.media-amazon.com/images/I/815cnjGCYfL.jpg) ![32500007 Optima 50 Flushing Mechanism, White - Image 4](https://m.media-amazon.com/images/I/71xvRfnjIPL.jpg) ![32500007 Optima 50 Flushing Mechanism, White - Image 5](https://m.media-amazon.com/images/I/71axH-mkyUL.jpg) ## Questions & Answers **Q: Water keeps pouring into pan stopping it from filling up** A: I have only just bought this, and this is exactly the problem I am having. After flushing, the overflow pipe gets stuck in the up position and water keeps pouring into the pan. I don't really want to remove the strainer to return the part, as that means taking the whole cistern off again. Is it possible to just get a replacement for the outlet valve or cable, as a brand new product really should be working? **Q: I need to know if outlet is 2"bsp, without adaptor?** A: I can confirm thread on bottom of adaptor is 2" BSP, hope this helps **Q: can you explain the reason and adjustment for dead water valve and short flush cursor** A: Download the manual 5496_Notice 50+Robinet_GB from this site: http://www.leagrave.net/file/siamp_optima_50_instructions.PDF, this explains the function of the dead water valve which controls the amount of residual water remaining after a long flush. It also explains the setting of the slide valve that controls the amount of water consumed in the short flush. **Q: Will this fit most toilets. My system is older button And its faulty?** A: If it looks the same it will fit. It is very easy to fit with just a twist to remove then a twist to fit. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Sorry plumbers *by M***N on 4 May 2026* Saved a fortune. Watched a clip on how to replace the toilet valve , ordered the valve and fitted it myself. All very easy and saved myself a large plumbers bill. Good product, well made and reasonably priced. ### ⭐⭐⭐⭐⭐ Perfect purchase *by M***B on 17 April 2026* I didn't want to break the toilet bowl and tank. Perfect, fits perfectly! Great that I found it! ### ⭐⭐⭐⭐ Good but need instructions *by A***R on 12 May 2026* Great. Easy to fit, unless your cistern is all boxed in without easy access like mine. Why no instructions with it? Don't know how to alter the flush volumes. ## Frequently Bought Together - Siamp 32500007 Optima 50 Flushing Mechanism, White - Pack of 3 Replacement Rubber Ball Valve Washers - Fits All Siamp Fill Valves - SIAMP 99B Bottom Entry Inlet Float Valve 1/2 inch 15mm Plastic 30996007, White --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/49915371-32500007-optima-50-flushing-mechanism-white](https://www.desertcart.co.uk/products/49915371-32500007-optima-50-flushing-mechanism-white) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-31*