Alb Filter Thread Guide
In this manual we will introduce you to various methods for determining the thread size of your valve. We know that even the best methods can lead to errors, so please do not hesitate to contact our support if you have any questions or problems. Your Alb Filter Team wishes you a lot of fun in determining your thread.
Free adapter exchange
It is best to determine your tap thread before buying the Alb Filter Duo.
If you need a different adapter than the M24 adapter included in the scope of delivery, we will exchange it after consultation with you.
Please send us an e-mail after your order with the required adapter and your order or order number.
Which methods can I use to determine a thread?
+ + + Very precise (recommendationhlen)
- By means of an electronic caliper gauge
- By means of manufacturer information (operating instructions)
+ + Partly exact
+ Little exact
Thread dimensions at a glance
Have you measured your thread yet? Here you will find an overview of the common dimensions.
If your design is not listed please contact us!
Preparation
Remove aerator / jet controller
Most water taps have a jet regulator, also called aerator. To determine the thread, we have to unscrew it.
Thread Determine output drive type
External thread
An external thread is when the serration,
as in this illustration, faces outwards.
The thread is always measured at the outer edge of the serration.
Internal thread
An internal thread is when the serration points to the inside.
The thread is always measured at the inner edge of the serration.
How do I measure a thread?
Caliper gauge (analog / digital)
Determination of an external thread (AG)
The thread is measured at the outer edge of the serration. To do this, position the caliper gauge as shown in the following figure and read off the value.
Determination of an internal thread (IG)
The thread is measured at the inner edge of the serration. To do this, position the caliper gauge as shown in the following figure and read off the mm value.
Measurement method
Ruler / measuring tape
Determination of an external thread (AG)
Place the zero value of the ruler on the outer edge of the serration. Now read the mm value on the opposite side of the thread.
NOTE: The external thread makes it easier to determine an AG with the ruler than an IG.
Determination of an internal thread (IG)
Place the zero value of the ruler on the inner edge of the serration. Now read the mm value on the opposite side of the thread.
Measurement method
Euro coin comparison
Determination of an external thread (AG)
Place the coins on the outer edge of the serration. Compare the position of the coin in the following illustrations.
The thread gradations are partly very small (0.5mm). If a thread cannot be determined exactly, try one of the other methods described or contact our support.
Determination of an internal thread (IG)
Insert the coin into the thread at a right angle until it stops. Make sure that the "scale" (see figure) is parallel to the lower edge of the thread.
The larger the thread, the deeper the coin sinks into it. If the coin cannot sink in completely, it is better to measure the opposite side (external thread).
The "scale" on euro coins makes it easy to compare the threads.
Euro coin comparison
External thread
External thread M16
External thread M18
External thread M20
External thread M21
External thread M22
External thread M24
Euro coin comparison
Internal thread
Internal thread M16
Internal thread M16.5
Internal thread M18
Internal thread M18.5
Internal thread M20
Internal thread M21.5
Internal thread M22
Internal thread M24
Here you get support!
We are also happy to help you by phone or even more conveniently via our WhatsApp Chat Service. Photograph your tap aerator / aerator with the measuring tape, ruler or caliper attached.
(+49) 7420 920 921 0
Alternatively, you can of course also contact us by e-mail or via our contact form.
