---
product_id: 86881421
title: "Plumb Thumbs 15mm & 22mm Radiator Capping Tool - Radiator Drain Down Tool"
brand: "jd brands"
price: "€ 27.63"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.gr/products/86881421-plumb-thumbs-15mm-and-22mm-radiator-capping-tool-radiator-drain
store_origin: GR
region: Greece
---

# Seals radiator, no spills Dual 15mm & 22mm sizes Speeds up radiator removal Plumb Thumbs 15mm & 22mm Radiator Capping Tool - Radiator Drain Down Tool

**Brand:** jd brands
**Price:** € 27.63
**Availability:** ✅ In Stock

## Summary

> 🔧 Cap it, carry it, conquer it – radiator removal made effortless!

## Quick Answers

- **What is this?** Plumb Thumbs 15mm & 22mm Radiator Capping Tool - Radiator Drain Down Tool by jd brands
- **How much does it cost?** € 27.63 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/86881421-plumb-thumbs-15mm-and-22mm-radiator-capping-tool-radiator-drain)

## Best For

- jd brands enthusiasts

## Why This Product

- Trusted jd brands brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Hands-Free Handling:** Allows safe, two-handed transport of radiators without leaks or mess.
- • **System-Friendly Design:** Prevents radiator drying and rusting, reducing repressurizing needs.
- • **Time-Saving Efficiency:** No need to drain radiators, cutting down job time significantly.
- • **Dual-Sized Precision Fit:** Fits both ½” (15mm) and ¾” (22mm) pipes for universal radiator compatibility.
- • **Mess-Free Radiator Removal:** Caps radiators fully sealed, eliminating spills and protecting your floors.

## Overview

The Plumb Thumbs Radiator Capping Tool is a dual-ended, quick-fit solution designed to seal 15mm and 22mm radiator pipes, enabling mess-free removal without draining. Its innovative design saves time, prevents spills, and protects heating systems from rust and repressurizing issues, making radiator maintenance safer and more efficient for professionals.

## Description

Radiator removal too many can prove to be a tricky task. It is well known that many of us have experienced dropping water or sludge from a radiator during the removal process onto floor coverings leaving the expense of a cleaning bill or worse still having to replace the flooring altogether.
Plumb Thumbs saves both time and money on any job! It allows you to cap off the radiator as a fully sealed unit without the need for draining down and also makes it safer to carry the radiator from A to B.

## Features

- Plumb Thumbs is a radiator capping tool which is quick and simple to use when carrying out radiator removal. It is a replacement for having to use fingers/thumbs over the radiator connections
- Double ended tool featuring both ½” (15mm) and ¾” (22mm). The threads for each size pipe will ensure every radiator can be removed was ease
- Eliminates the need to drain radiators for fast and easy radiator removal. The radiator can be removed still containing water as a fully sealed unit. Avoids the risk of spilling or trailing dirty water
- Plumb Thumbs makes the job much easier and safer! No mess, No Fuss! The radiator capping tools allow you to use both hands to carry the radiator from A to B
- Stops the radiator from drying out and rusting inside. The heating system requires very little repressuring when reconnecting the radiator because of Plumb Thumbs holding the water within the unit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B0721YL264 |
| Best Sellers Rank | 32,837 in DIY & Tools (See Top 100 in DIY & Tools) 210 in Central Heating System Accessories |
| Bit Compatibilities | ½ inch, ¾ inch |
| Bit Set Composition | Single Bit |
| Brand | JD Brands |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,275) 4.6 out of 5 stars |
| Drive Bit Application | automotive, construction |
| Drive System | Phillips and slotted |
| Finish | Polished |
| Included Components | Pair of Plumbthumbs |
| Item Type Name | Radiator Capping Tool |
| Manufacturer | Grakob |
| Material | Plastic |
| Model Number | 2021-01FU-4-38306 |
| Number Of Pieces | 1 |
| Part Number | RCT3 |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** JD Brands
- **Drive system:** Phillips and slotted
- **Finish type:** Polished
- **Material:** Plastic
- **Number of pieces:** 1

## Images

![Plumb Thumbs 15mm & 22mm Radiator Capping Tool - Radiator Drain Down Tool - Image 1](https://m.media-amazon.com/images/I/61lyd1lWVsL.jpg)
![Plumb Thumbs 15mm & 22mm Radiator Capping Tool - Radiator Drain Down Tool - Image 2](https://m.media-amazon.com/images/I/61ohP6Nx+wL.jpg)
![Plumb Thumbs 15mm & 22mm Radiator Capping Tool - Radiator Drain Down Tool - Image 3](https://m.media-amazon.com/images/I/71CkQvzEKDL.jpg)
![Plumb Thumbs 15mm & 22mm Radiator Capping Tool - Radiator Drain Down Tool - Image 4](https://m.media-amazon.com/images/I/71Li8G7ObDL.jpg)
![Plumb Thumbs 15mm & 22mm Radiator Capping Tool - Radiator Drain Down Tool - Image 5](https://m.media-amazon.com/images/I/71pQy9bR2GS.jpg)

## Available Options

This product comes in different **Size Name** options.

## Questions & Answers

**Q: How did you wind those on whilst so close to the wall**
A: You turn the radiator nut not the capping tool. Work very well.

**Q: This question was asked but answered incorrectly. How do you use these without water spilling out. Vaccuum doesnot hold all the water in the radiator.**
A: They screw on the threaded nuts on the radiator.

**Q: How do you stop the water from the feed going everywhere? Guessing you still need to drain that?**
A: Turn off the trv and lockshield then put a small container or heavy duty bag under the radiator, take the nut off from the radiator tail then tighten the plumb thumb onto it, do the same for the other side of the rad then lift it off and empty it outside. The flow and return won’t keep dripping if the valves are both off

**Q: you may as well just fit a blanking plug for 50 pence each**
A: if its nut and ring yes but if its 3/4 union face  you carn;t

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great tool, must have for apprentices.
*by  on Reviewed in the United Kingdom 8 July 2026*

Great for removing rads without emptying and carrying outside without drips. I got a pair for myself a few years ago and have since bought 2 more packs for apprentices as a must have tool. Plastic threads so watch out for the odd 3/4” trying to cross thread, apart from that, don’t go mental on them and they will last. Highly recommend.

### ⭐⭐⭐⭐⭐ The tool is made from high-quality plastic and is designed to withstand wear and tear.
*by  on Reviewed in the United Kingdom 16 December 2023*

The 15mm & 22mm Grakob RCT3 Plastic Plumb Thumbs Radiator Capping Tool is a versatile tool that can be used for a variety of plumbing tasks, including removing and installing radiator caps, as well as capping off pipes. It is made from high-quality plastic and is designed to be durable and long-lasting.Good:Versatility: The tool can be used for a variety of plumbing tasks, making it a versatile addition to any toolkit.Durability: The tool is made from high-quality plastic and is designed to withstand wear and tear.Easy to use: The tool is easy to use and can be operated by one person.Safe: The tool is designed to be safe for use and will not damage pipes or fittings.Affordable: The 15mm & 22mm Grakob RCT3 Plastic Plumb Thumbs Radiator Capping Tool is an affordable option for plumbers of all levels of experience.Light weight: The tool is lightweight and easy to carry, making it convenient to take with you to job sites.Bad:Not as durable as some other tools: The tool may not be as durable as some other tools, such as brass tools.May not be suitable for heavy-duty use: The tool is not designed for heavy-duty use and may not be suitable for use on older or corroded pipes.May not be as effective on some types of pipes: The tool may not be as effective on some types of pipes, such as copper pipes.Some users have reported that the tool can be difficult to use on small or tight spaces: The tool may be difficult to use on small or tight spaces, such as behind radiators.Some users have reported that the tool can be difficult to use with worn-out or damaged caps: The tool may be difficult to use with worn-out or damaged caps.Overall:The 15mm & 22mm Grakob RCT3 Plastic Plumb Thumbs Radiator Capping Tool is a good option for plumbers who are looking for a versatile, affordable, and easy-to-use tool for removing and installing radiator caps. However, it may not be as durable as some other tools and may not be suitable for heavy-duty use.

### ⭐⭐⭐⭐ Very good product, just an important drawback
*by  on Reviewed in the United Kingdom 1 March 2026*

Very good and useful tool, used it on many occasions with no problemsOnly issue is that they are not metal and can cross thread easily and they don’t thread nicely onto older type 3/4” rad tails that are curved. Unfortunately I’ve had to bin mine as this style of rad tails cross threaded them. Still a very positive review overall as this lasted around 2 years+, Just need to be mindful of what type of rad tail you are threading on to.

## Frequently Bought Together

- 15mm & 22mm Grakob RCT3 Plastic Plumb Thumbs Radiator Capping Tool
- Plumb Tub - SPI Radiator Draining Tub (Color May Vary)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-08-14*