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John Guest Tap Adapter 1/4" tube x 7/16" NPT Female

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John Guest Tap Adaptor 1/4" tube x 7/6" NPT Female

John Guest is the world's leading manufacturer of high quality push-in fittings, pipe and plastic plumbing systems to a wide variety of industries, John Guest fittings are easy to use, simply push the tubing all the way in then pull on the tubing to lock for a high water pressure sealed connection

  • Fits onto water filter tap end thread
  • Straight Adaptor 1/4" tube x 7/16" NPT female
  • Push-fit technology
  • Quick disconnection without the need for tools
  • High chemical resistance
  • Food Quality and suitable for potable liquids and pure water applications
  • Not suitable for compressed air and vacuum applications

    Food Quality

    All these fittings are produced in Food and Drug Administration (FDA) compliant materials and are therefore recommended for food quality applications


To make a connection, the tube is simply pushed in by hand; the unique patented John Guest collet locking system then holds the tube firmly in place without deforming it or restricting flow. 

Materials of construction 
Super Speedfit fittings are made up of three components: 
Bodies are produced in an acetal copolymer or polypropylene. 
‘O’ rings are Nitrile rubber or EPDM. 
Collets are produced in acetal copolymer or polypropylene with stainless steel teeth. 


TO DISCONNECT Push in collet and remove tube 

Super Speedfit fittings are suitable for the following pressures and temperatures.



5/32″ – 5/16″
4mm – 8mm

3/8″- 1/2″
10mm – 22mm

-20°C  16 Bar 10 Bar
Potable Liquids and Air    
+1°C 16 Bar  10 Bar
 +20°C  16 Bar  10 Bar
 +65°C  10 Bar   7 Bar

Tube Tolerances

Super Speedfit fittings are offered for tubes with outside diameters to the following tolerances.

Size (inches)

 5/32 – 3/16

 1/4 – 1/2

Tolerance (inches)

+0.001 / -0.003

+0.001 / -0.004

Size (mm)

4mm – 5mm

 6mm – 22mm

Tolerance (mm)

+0.05 / -0.07

+0.05 / -0.10

Maximum Torque Values for Plastic Threads BSP, BSPT & NPT.

Plastic threads are not generally as strong as brass threads. Customers and end users should be aware of this when choosing products for their applications. Over-tightening of plastic threads will cause undue stress and eventual cracking and leakage. The maximum torque figures for BSP and BSPT threads used in John Guest fittings in mating threads conforming to the relevant BS or International thread standards are shown below.


1/8 – 1/4

3/8 – 1/2






Product Code JG Tap Adapter 1/4 tube x 7/16
Manufacturer John Guest
Condition New
Weight 0.010Kg

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