---
product_id: 49281527
title: "30998010 1/2-Inch 15 mm 99T Plastic Bottom Entry Adjustable Telescopic Inlet Float Valve - Multi-Colour"
brand: "siamp"
price: "1798045₫"
currency: VND
in_stock: true
reviews_count: 8
url: https://www.desertcart.vn/products/49281527-30998010-1-2-inch-15-mm-99t-plastic-bottom-entry
store_origin: VN
region: Vietnam
---

# Precise water fill control Quiet operation Adjustable telescopic height 30998010 1/2-Inch 15 mm 99T Plastic Bottom Entry Adjustable Telescopic Inlet Float Valve - Multi-Colour

**Brand:** siamp
**Price:** 1798045₫
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with precision and quiet confidence!

## Quick Answers

- **What is this?** 30998010 1/2-Inch 15 mm 99T Plastic Bottom Entry Adjustable Telescopic Inlet Float Valve - Multi-Colour by siamp
- **How much does it cost?** 1798045₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/49281527-30998010-1-2-inch-15-mm-99t-plastic-bottom-entry)

## 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

- • **Durable & Reliable:** High-quality plastic build resists wear and guarantees years of hassle-free use
- • **Space-Smart Design:** Compact and slim profile fits even the tightest cisterns without interference
- • **Precision Water Control:** Telescopic design ensures exact water fill level every time, no guesswork needed
- • **Custom-fit Compatibility:** Adjustable 1/2-inch inlet fits most bottom entry toilet cisterns effortlessly
- • **Whisper-Quiet Performance:** Engineered for silent operation, eliminating noisy refills and disruptions

## Overview

The Siamp 30998010 is a multi-colour, plastic 1/2-inch bottom entry adjustable telescopic inlet float valve designed for versatile compatibility with various toilet cisterns. Its compact, quiet, and easy-to-install design ensures precise water fill control, making it a reliable upgrade for modern bathrooms.

## Description

99T bottom entry inlet valve from Siamp is an excellent value, reliable solution. Available with both a 1/2 inch and 3/8 inch thread to fit almost any water supply and with it's adjustable height design, this valve should be compatible with a variety of bottom entry toilet cisterns. Manufacturers Code: 30998010

Review: Easy to fit and worked without adjustment - Have a slimline en-suit bathroom fitted and the cistern filler was a mare to adjust and was possibly not the right one for the job... the unit was large inside a slimline plastic cistern that had strengthening braces further restricting available space... after many years of use, it failed.. as did the overflow system and flooded the place. Bought this to replace the old (also replaced the overflow/flush mechanism) but this unit is smaller than original one and fitted perfectly into the cistern and did not foul on anything inside. Took about 20minutes to remove old and replace with this. The instructions were clear enough and some marking and measuring is advised to assist with a very simple setting of this unit's height prior to installing.. takes a few minutes only and worth it. First fill was spot on to what I needed and the unit needed no further adjustment of water fill level... flushed and it filled spot on.. quieter than the old one and no slower. Several weeks later.. it still fills to exactly the right level.
Review: Toilet cistern water valve. - Works great

## Features

- Model Number: 30998010
- Material(s) Plastic.
- Suitability: Suitable for a variety of bottom entry toilet cisterns
- Package Dimensions: 10.4 L x 7.2 H x 36.8 W (centimeters)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NGMJULY |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 6,067 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 16 in Float Valves |
| Colour | Multi-colour |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,082) |
| Date First Available | 30 Jun. 2014 |
| Finish | Polished |
| Handle material | Plastic |
| Included Components | 1 x Siamp 99T Bottom Entry Adjustable Telescopic Inlet Float Valve 1/2 inch 15mm Plastic 30998010 |
| Item Package Quantity | 1 |
| Item Weight | 249 g |
| Item model number | 30998010 |
| Manufacturer | Siamp |
| Material | Plastic |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part Number | 30998010 |
| Product Dimensions | 7.5 x 5.5 x 33 cm; 249.48 g |
| Shape | Straight |
| Size | 1/2 inch |
| Special Features | Quiet |
| Style | Modern |

## Product Details

- **Brand:** SIAMP
- **Exterior finish:** Plastic
- **Global Trade Identification Number:** 03247230071272
- **Inlet connection type:** 1/2" BSP Male thread
- **Item dimensions L x W x H:** 7.5 x 5.5 x 33 centimetres
- **Manufacturer:** Siamp
- **Material:** Plastic
- **Number of ports:** 2

## Images

![30998010 1/2-Inch 15 mm 99T Plastic Bottom Entry Adjustable Telescopic Inlet Float Valve - Multi-Colour - Image 1](https://m.media-amazon.com/images/I/41hkoqJ1jgL.jpg)

## Questions & Answers

**Q: What is the total length from the bottom of the thread to the top of the unit?**
A: The. Unit is adjustable

**Q: Can this be split where the black nut is?  I want to use my existing threads as I cannot get underneath the toilet to remove them.**
A: Yes it can, I have done the same too in the past, it has a clip that pulls down I seem to remember so you don’t have to screw it off and on again as no room to turn inside the toilet

**Q: Does the water supply need to be turned off to install this?**
A: Yes. Hopefully there is an in-line valve to isolate the water supply to the cistern, but if not then the water needs to be turned off otherwise you will have a flood when you disconnect the pipe from the bottom of this inlet valve assembly.

**Q: is there a filter on the bottom part of the valve stem ?....i have a blockage....its either the water inlet pipe or the inlet valve stem if there is a**
A: There is not a filter the only thing that goes wrong with these is the diaphragm which is easy to change the diaphragm splits and gives the impression that there is a blockage is slow fill

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to fit and worked without adjustment
*by A***E on 3 January 2023*

Have a slimline en-suit bathroom fitted and the cistern filler was a mare to adjust and was possibly not the right one for the job... the unit was large inside a slimline plastic cistern that had strengthening braces further restricting available space... after many years of use, it failed.. as did the overflow system and flooded the place. Bought this to replace the old (also replaced the overflow/flush mechanism) but this unit is smaller than original one and fitted perfectly into the cistern and did not foul on anything inside. Took about 20minutes to remove old and replace with this. The instructions were clear enough and some marking and measuring is advised to assist with a very simple setting of this unit's height prior to installing.. takes a few minutes only and worth it. First fill was spot on to what I needed and the unit needed no further adjustment of water fill level... flushed and it filled spot on.. quieter than the old one and no slower. Several weeks later.. it still fills to exactly the right level.

### ⭐⭐⭐⭐⭐ Toilet cistern water valve.
*by G***D on 23 July 2025*

Works great

### ⭐⭐⭐⭐ inlet float
*by P***H on 16 May 2021*

excellent, fitted in a very short time, easy to follow instructions, most of fitting common sense. loo now working properly.

## Frequently Bought Together

- Siamp 99T Bottom Entry Adjustable Telescopic Inlet Float Valve 1/2 inch 15mm Plastic 30998010, Multi-Colour
- 2 x SIAMP Diaphragm Inlet Float Valve Washer, Rubber, 95 95L 99T 99B 99 Duravit Laufen Twyford
- Pack of 3 Replacement Rubber Ball Valve Washers - Fits All Siamp Fill Valves

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-20*