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Home » Saltwater Aquarium Supplies  » Reverse Osmosis  » John Guest RO/DI Parts  »  JG 1/4 inch x 1/4 inch Union Ball Valve
JG 1/4 inch x 1/4 inch Union Ball Valve

JG 1/4 inch x 1/4 inch Union Ball Valve

Average Rating 4.5 6
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JG 1/4 inch x 1/4 inch Union Ball Valve Information

Color: White
John Guest Part# : PPSV040808W
Tube O.D.: 1/4"

How to make a connection:

  1. Cut tube square.
    Cut the tube square. It is essential that the outside diameter be free of score marks and that burrs and sharp edges be removed before inserting into fitting. For soft or thin walled plastic tubing we recommend the use of a tube insert.
  2. Insert tube.
    Fitting grips before it seals. Ensure tube is pushed in to the tube stop.
  3. Push up to tube stop.
    Push the tube into the fitting, to the tube stop. The collet (gripper) has stainless steel teeth which hold the tube firmly in position while the "O" ring provides a permanent leak proof seal.
  4. Pull to check secure.
    Pull on the tube to check it is secure. It is good practice to test the system prior to leaving site and/or before use.
Push in Collet and remove tube.
To disconnect, ensure the system is depressurized before removing fitting. Push in collet squarely against face of fitting. With the Collet held in this position, the tube can be removed. The fitting can then be re-used.

Manufacturer Info

John Guest
In 1961 John Guest`s vision was to run a company with innovation, quality and sustainable growth to be at the core of the organization’s principles.

In 1974, John Guest developed his first push in tube connector for use with compressed air. That basic "Super Speedfit" concept has been developed to include fittings for a wide range of applications.

John Guest`s World Headquarters are located in the UK where all their fittings are designed, manufactured and distributed throughout the world.

JG 1/4 inch x 1/4 inch Union Ball Valve Reviews

Average Rating
(6 reviews)
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Great product

Reviewers Rating Excellent!

Posted: 12/14/2010 from EAST BRUNSWICK, NJ UNITED STAT
5.0 5
Experience Level: Intermediate

Comments: It's really hard for anything wrong to be with a valve, but some of them are made so cheap they start leaking on the first day. This one is very sturdy and holds pressure after multiple disconnects.

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Great Valve

Reviewers Rating Great

Posted: 5/19/2009 from SPARTA, IL UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: John Guest valves seem to be one of the best valves available for the price. On most valves, they are difficult to turn after time. These valves continue to operate easily.

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costly for durability

Reviewers Rating Average

Posted: 12/30/2008 from PACIFIC GROVE, CA UNITED STATE
3.0 5
Experience Level: Intermediate

Comments: These ball valves were talked up so much I expected them to last at least 6 months. Not the case- now granted, I have been using them regularly to top up evaporation (not their intended use). Regardless, I wish that they would have lasted longer considering their astonishingly high price. Two have failed on me in a matter of months. it is now plainly clear to me that they have a very limited life. on the plus, they are easy to set up and functional (before they fail).

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JG Valves

Reviewers Rating Excellent!

Posted: 11/29/2007 from FITCHBURG, MA UNITED STATES
5.0 5
Experience Level: Expert

Comments: Very high quality valves,easy to adjust and no leaks.

1 of 1 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 8/10/2007 from SUGARLOAF KEY, FL UNITED STATE
5.0 5
Experience Level: Intermediate

Comments: what could be easier!!!as long as you give them that little"tug"at the end..should never leak(tubbing will fail first).-Dave

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Works Great.

Reviewers Rating Excellent!

Posted: 8/2/2007 from PICO RIVERA, CA UNITED STATES
5.0 5
Experience Level: Expert

Comments: I have probably purchased 5 or so of these devices. It works great with no leaks and it's extremely easy to connect to flexible tubing. I am a big fan of speed fit which saves time, but I was worried about leaks. Purchase with confidence, so far no leaks. I wish they were a little cheaper, but that's about the only "relative" con I can find. My setup includes these union ball valve at: Source water, after RO product water, and after DI product water. Makes it very easy to control.

1 of 2 People found this review helpful, did you? Yes No

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