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John Guest

John Guest - Acetal Female Connector Quick Connect Fitting - Grey

Product Code PI450822S

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John Guest Quick Connect Fittings - Acetal Female Connector 

Designed, manufactured and assembled in the UK by John Guest Speedfit. Connectors use a grip then seal collet arrangement. The female coupler is ideal for the connection of taps, and Toilets. Simply push the fitting fully onto the pipe and turn onto the thread. Should the need arise to demount the connection unlock the nut push the collet towards the body of the fitting and pull the pipe to release.

Acetal has greater strength and heat resistance compared to polypropylene. The fittings are manufactured in acetal copolymer with food grade nitrile O-ring, making them especially suitable for applications involving foodstuff and potable liquids. They are also suitable for air and inert gases and can therefore be used on CO2 lines, pneumatic applications and vacuum.

  • Material : Acetal
National Pipe Thread (NPT) Size Measured Against a Ruler*
 Actual Diameter
National Pipe Thread (NPT)
0.405" 1/8"
0.540" 1/4"
0.675" 3/8"
0.840" 1/2"

*NOTE: A very common misconception is that a 1/4" NPT measures as 1/4 inch on a ruler or tape measurer. However, that is not the case.  NPT will measure larger in diameter.  Above is a sizing reference to help clarify.


John Guest 

John Guest, a plumbing industry leader, makes high-quality fittings and connectors. The John Guest Acetal Female Connection is a popular pipe connector. This blog will explain why this fitting is remarkable and why you should use it for your next plumbing job.

First, a female connector fitting's function. Female connector fittings link pipes. Any plumbing system needs this to connect pipes securely.

The John Guest Acetal Female Connector is a durable, easy-to-use fitting. Reasons why this fitment is special:

High-quality acetal: The John Guest Acetal Female Connection can tolerate high pressure and temperature. Its durability and versatility make it a crucial part of any plumbing system.

Installation is simple with the John Guest Acetal Female Connection. Its push-fit connection technique makes it easy to attach to pipes without tools or training. DIYers and experts will find it convenient.

The John Guest Acetal Female Connection is leak-proof. The push-fit connection method seals tightly to prevent leakage. It is reliable and safe for many uses.

Versatile: The John Guest Acetal Female Connection has several uses. It works with PEX, copper, and plastic pipes. It's compatible with any plumbing system, regardless of material.

The John Guest Acetal Female Connection is inexpensive despite its high-quality material and adaptability. DIYers and experts alike can save money using it.