John Guest tube reducer
Compact adapter for connecting tubes of different diameters in the same line.
Configurations
The variants include transitions from 3/8" to 3/16", 1/4" or 5/16", from 1/2" to 3/8", and a metric option from 10 mm to 8 mm.
When to use it
It is useful when adapting an existing line to equipment or a pipe section of smaller diameter without adding a larger reducing union.
Installation
Identify each side, work with no pressure, prepare the tubes with straight cuts and assemble fully. Do not force a tube of an approximate size.
Frequently asked questions
Is it suitable for changing diameter?
Yes.
Are 3/8" and 10 mm the same?
No.
Does the order of the measurements matter?
Yes, identify each side before installing.
What should I check if there is a leak?
Exact dimensions, cut quality, insertion depth and tube condition.