John Guest 1/4″ JG x 3/8″ NPTF Male Connector with 1 GPM Flow Restrictor


In Stock as of 6:00pm EST

1 - 4$13.35
5 - 9$12.75
10 - 49$12.25
50 - *$11.75


This John Guest flow restrictor fitting is installed in Everpure QL2 or QL3 Heads on the outlet port to increase, the flow from .5 GPM to 1 GPM.

The same fitting without the flow restrictor is installed on the inlet port of the QL3 Head.

Fitting can also can be used for other applications where 1 GPM Flow is needed.

The fitting accepts 1/4″ OD Plastic of Copper Tubes and has 3/8″ MPT.


  • Push-fit technology
  • Quick disconnection without the need for tools
  • High chemical resistance
  • Food Quality and suitable for potable liquids and pure water applications
  • Acetal fittings are suitable for air and inert gases and can be used on N2/CO2 mixed gas dispensing lines and in pneumatics applications and vacuum lines.

This fitting is made of the following components:

  • The body is produced in acetal copolymer
  • ‘O’Rings are nitrile rubber
  • The collet is produced in acetal copolymer with stainless steel teeth

Additional information

Fitting Size

Gallons Per Minute

Connector Type

Country of Origin

Parts / Accessories

  • 520″ x 1/2″ Thread Seal Tape

    Part#: 500X520TFE