Description
15ml Stem to 3/8″ Stem — a 3/8 thread and taking 15ml tube.
Listed as 3/8. Thread patterns are not interchangeable, so match it to the fitting it is joining rather than to the tube it sits near.
Push-fit fittings join beer and gas line without tools: the tube pushes into the collet, grips, and seals, and releases again by pressing the collar in and pulling the tube out.
Specification
| Thread / size | 3/8 |
|---|---|
| Stem / tube size | 15ml |
Every figure above is stated by the supplier in the product name. Where a dimension is not listed we have not been given it — ask and we will confirm before you order.
Before you order
- Sizes refer to the tube’s OUTSIDE diameter, not the bore
- Cut the tube square — an angled cut is the usual reason a joint weeps
- Push fully home, then pull back to check the collet has gripped
There is a fuller explanation of how to choose on the john guest fittings page.
Specification
| Thread / size | 3/8 |
|---|---|
| Stem / tube size | 15ml |



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