








🚿 Upgrade your flush game with silent precision and certified durability!
The SIAMP 30992110 1/2" BSP 99T Brass Thread Bottom Inlet Valve is a WRAS-approved, brass and plastic valve designed for easy replacement in ceramic or plastic cisterns. Featuring telescopic height adjustment and a quiet hydraulic closure, it operates efficiently across a wide pressure range (0.1 to 10 bar). Compact and reliable, it comes with all necessary fittings and a 10-year guarantee, making it the smart choice for modern plumbing upgrades.
| ASIN | B00M2VW7HO |
| Best Sellers Rank | 18,556 in DIY & Tools ( See Top 100 in DIY & Tools ) 52 in Toilet Parts |
| Brand | SIAMP |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,040) |
| Exterior Finish | Brass,Plastic |
| Global Trade Identification Number | 03247230069521 |
| Included Components | Inlet valve; nut; seal; washer; instruction |
| Inlet Connection Size | 1/2" Inches |
| Inlet Connection Type | Brass Thread |
| Item Dimensions | 8.5 x 6 x 33 centimetres |
| Item Type Name | 99T ½”Brass LP Inlet Valve 30992110 |
| Item Weight | 249 g |
| Manufacturer | SIAMP |
| Manufacturer Warranty Description | 10 year. |
| Material | Brass, Plastic |
| Maximum Pressure | 10 Bars |
| Model Number | 30992110 |
| Number of Pieces | 1 |
| Number of Ports | 1 |
| Outlet Connection Size | 2 Inches |
| Outlet Connection Type | BSP |
| Specification Met | WRAS |
| Thread Size | 1/2 inch |
| Thread Type | Type |
| Unit Count | 1.0 count |
| Valve Type | bottom inlet valve |
R**E
DOES THE JOB INTENDED
Bought this as a replacement for the same part which had been broken. This one had a metal threaded lower part which was an improvement. Now fitted and does the job intended. Plumbing supply merchants online wanted a hefty postage charge, whereas Amazon Prime is free - no brainer! Happy with my purchase.
D**E
Good quality
Bought this to replace a fairly decent one that had a plastic fitting. It had started to leak (washer had deformed slightly, I think) and in removing it the thread on the plastic fitting got ripped to pieces. Decided to replace it with one with a brass fitting. This one was a good price, but worked very well. It's quiet and simple.
S**T
Value for money
That's twice i've bought SIAMP valves this way and it's quicker and simpler than finding the right one in a plumbers merchant. Valves appear good quality and very simple to fit/adjust.
D**H
Quick and simple replacement
The old one became insanely slow to fill the cistern. This was an inexpensive, good quality, easy to fit, part for part replacement.
L**G
Hiccup at first but working perfectly now.
Easy to install and positively silent to fill the cistern. Which is a joy after our last noisy, slow one. One slight issue was that the float mechanism wasn’t working at first, and it seemed to stick, which meant it didn’t shut of the inlet valve and water continually drained down into the pan. Anyway, having followed the fitting instructions to the tea, I asked a question to the community and had great support and suggestions. So if you have the same issue- try checking that mechanism isn’t catching anywhere, and has room all around it, secondly lift the float manually and see if the shut of valve works, if it does just give it a bit of a jiggle, and move up and down a few times, it seemed to work for me and just released what ever was catching it. If the shut off valve doesn’t work when you lift it manually, you can assume you have a faulty unit. All else fails ask the community for advise. Goodluck.
A**G
Drop-in replacement
A drop-in replacement for an older and faulty one that arrived in a day. Comes simply in a plastic bad with all fittings and a simple manual. Though no paperwork is needed, super easy to fit. Wanted to go with a brass thread to make sure I could undo the connection if needed. It could be a bit trickier with a plastic one once tightened.
G**2
Inlet valve!
Can't fault the seller for this, as any issues I had are really from the manufacturer! Firstly after fitting I had leak, had to refit with my old washer, which had twice the diameter of the one supplied, leak fixed, secondly, it would flush but not refill, had to change the the diagram supplied to my old one, problem solved, think its to do with flow rate? hence I bought this inlet valve because it states, low and high water pressure! Eventually got it working, now 100% but because of the issues only 4 stars, no fault of the seller, it even arrived 6 days before stated delivery date!
D**K
Works fine.
Removing old one was a faff as the retaining nut on the plastic feed pipe was difficult to unscrew down the thread and in resrricted space. Buying the brass replacement probably worth the extra couple of quid. Didn't make any adjustment to the height, just fitted as it came out of the box. With the gauze filter left in place it takes forty five seconds to fill.
R**T
Lo compre de ocasion para aprovechar solo piezas de la parte superior y reparar el mio que de otra manera hubiera tenido que desmontar el WC del suelo ya que la entrada de agua es por abajo y es inaccesible. Tema solucionado!
G**A
Prodotto di qualità! Lo consiglio.
E**E
très bon produit, réglage facile, montage encore plus facile. un excellent appareil
Y**S
RAS
J**M
Attention c’est du 15/21 ce n’est pas un flotteur pour la France