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Tube Compression x NPT Threaded Adapter - 1/4" Tube x 1/4" FemaleNPT
Tube Compression x NPT Threaded Adapter - 1/4" Tube x 1/4" FemaleNPT

Our Price: $12.00

Quantity in Stock:32

Product Code: COMP14TX14FNPT

Compression Ferrule*:

This fitting converts stainless or copper tubing to NPT threads when you either need to break the connection often or when soldering or welding is not possible. We stock several different sizes of thread and tube diameter configurations.

This is one of those fittings that has a lot of different uses in a brewery. We use these to make our diptube assemblies but they can be used anywhere that you need to convert tubing to NPT threads. The fittings themselves are made from 304 stainless steel.


Besides the tube size and thread options, we also offer a choice between stainless and nylon compression rings/sleeves.

Stainless Ferrule: This is a set of rings/sleeves/ferrules that slip over the tubing, but behind the compression nut that get squeezed onto the tubing when you lock the nut down TIGHT for the first time. This process permanently crimps the rings to the tubing though you can still remove the compresison nut and tubing (though the nut is now captured). This option is more difficult to use and requires a lot of torque to set, however it is the better mechanical option where a lot of stress is put on the connection.

Nylon (AKA Delrin) Sleeve: This option replaces the pair of stainless rings with a one-piece wedge ferrule made of a tough, high temp, food grade plastic. It seals well with minimal tightening on the nut (hand tight plus a quarter turn), never attaches itself to the tubing permanently. Although it is plastic, it does allow for many disconnection cycles without wearing out. The only down side is that it doesn't offer the same mechanical strength as the SS version in cases where a LOT of stress is put on the connection. We recommend this for anything except for mounting HERMS coils where the full weight of the coil is supported by the compression fittings.

Note: the fittings for 1/4" and 1/2" tubing are "bore-thru" meaning you can pass the tubing all the way through as there is no stop. The fitting for 3/8" tubing does have a shoulder or "stop" inside to keep tubing from slipping all the way through, but the back is drilled to 3/8" almost all the way through. If you wanted a bore-thru on this, you would need to drill the shoulder out with a 3/8" drill bit.

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