If you are looking for a pump to dispense liquid from a bottle or barrel, you may need to know the thread size of the container neck.
Sometimes this will be written on the inside of the cap, or given in the specifications of the product.
However if the thread size is unknown is it simple to work out by measuring it yourself, as explained below.
Burkle offer an extensive range of liquid pumps to dispense liquids from containers, bottles and barrels in scientific, industrial, food production and other environments.
To make sure the pumps will fit all containers, they also offer a range of adapters so you can adapt any bottle to any pump.
In order to choose the right one(s) you first need to work out the thread size, as shown below;
How to work out the thread size of a bottle, barrel or container
- First ascertain if you have an external thread (ridges outside, shown in blue above) or an internal thread (ridges inside, shown in orange above)
- Use calipers to make the measuring easier, but carefully using a ruler is possible – measure the two distances stated above
- Identify the thread size using the table below;
|Distance A (mm)||Distance B (mm)||Distance C (mm)||Thread description||Thread type|
|53||5||50.5||51mm DIN 51||Sawtooth|
|59-60||6||55.8||61mm DIN 60||Sawtooth|
|61||6||55.8||61mm DIN 61||Sawtooth|
|71||6||66.5||71mm DIN 71||Sawtooth|
|59||2.2||57.5||2″ BSP / R2″ steel drum fine thread||Standard|
|64.5||5||60||63mm, 64mm BSI||Sawtooth|
|33.5||3||32.7||35mm||Round / Std|
|69.5||5.5||65||2″ coarse Mauser L-ring||Sawtooth|
|56||3.5||52.5||Tri-Sure, 2″ coarse thread v. Leer, Tri-sure||Sawtooth|
|63.2||4.25||57.5||US drum thread||Sawtooth|