As my Cast iron radiator stands on legs, I only have 100mm/4" from the floor to the nut on the bottom of the valve. will this fit. What is the depth.

This should work, the height of the tub is just over 70mm so would fit under the radiator if you have 100mm to work with.

What volume of water does it hold?

The Plumb tub holds 1.4 litres of water.

As there are only 3 holes how can this thing seal around a 10mm pipe and a 12mm pipe ? as the other 2 must be for 15mm and 22mm

The tub is very flexible with a raised shoulder on the holes which will give it some flexibility when going round the pipes. The smallest hole would cover the 10 & 12mm pipes.

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Plumb Tub - SPI Radiator Draining Tub - Supplied in SPI Green

Product ID: 49369273

Details

Brand
SPI
Capacity
1.4 litres
Colour
Green Or Blue
Finish type
Polished
Installation type
Freestanding
Item weight
0.15 Kilograms

💧1.4L water capacity

🔄Flexible & bendy design

🛠️Fits 10-22mm pipes

¥10570

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Catch every drop, flex every angle — the Plumb Tub that works as hard as you do!

BEND IT YOUR WAY - Innovative flexible design adapts to tight spaces and awkward angles effortlessly.
TRUSTED UK QUALITY - Polished rubber finish crafted by SPI, backed by 1,400+ glowing reviews.
GENEROUS 1 4 L CAPACITY - Holds ample water volume to keep your workspace clean and dry.
LEAK PROOF SEAL EVERY TIME - Flexible flanges ensure a perfect, mess-free catch—no more wet floors.
UNIVERSAL PIPE COMPATIBILITY - Seamlessly fits 10, 12, 15 & 22mm pipes for ultimate versatility.

The SPI Plumb Tub is a flexible, leak-proof radiator draining tub designed to fit multiple pipe sizes (10-22mm). With a 1.4-litre capacity and bendable flanges, it ensures a perfect seal and mess-free water collection even in tight or awkward spaces. Made from durable rubber and polished for quality, this UK-made tool is a must-have for professionals seeking reliable, versatile plumbing solutions.

Specifications

ASIN	B01MT141UC
Best Sellers Rank	2,191 in DIY & Tools ( See Top 100 in DIY & Tools ) 25 in Central Heating System Accessories
Brand	SPI
Capacity	1.4 litres
Colour	Green Or Blue
Country of Origin	United Kingdom
Customer Reviews	4.7 4.7 out of 5 stars (1,428)
Finish	Polished
Global Trade Identification Number	00683325007086
Included Components	Plumb Tub
Installation Type	Freestanding
Item Dimensions L x W x H	26.7L x 26.9W x 8.6H centimetres
Item Type Name	Plumb Tub
Item Weight	0.15 Kilograms
Manufacturer	Select Products
Material	Rubber
Model Number	SEL9235
Number of Items	1
Part Number	SEL9235
Shape	Rectangular
Style	Traditional
UPC	683325007086
Unit Count	1.0 gram

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