SNS JSC1/4-N01 1/4"Tube OD x 1/8 NPT 90 Degree Elbow Air Flow Control Valve Push to Connect Fitting Speed Control Valve(10 PCS)

I bought these to slow the return of a piston under load and they work great. They provide a lot of control over the air under pressure and I'm able to go from "slamming it home" to "gently laying it down" with the twist of a knob. They don't seem to complete stop the airflow as other reviews have pointed out, but that's not what they are meant to do. As far as regulating airflow, 5 stars all day long.

Good Quality, attractive, great price, quick delivery. Pneumatic flow control valves

They are holding up well, good value

With press lock fittings you would assume these are made to control air flow. They do not.....so.... not much of a "control valve". They are like a 90 degree fitting with a pretty knob that does nothing

Bad quality; I did not test all of them until 2 of first 3 used failed that inspired me to check all of them and disappointingly learned only 2 of 10 worked. It has been 5 months after received. I was unable to file a complaint with Amazon. Advise you to check on every each when received if you have to buy them. Or, not considering buying them.

Unfortunately only one from the bag grips the hose. You can easily pull out the hose without pushing in the release, which makes them useless. I tried different 6mm air hose and all the same. All my others 6mm connectors grip well.

even in very low flow, when the valve is completely closed, there is gas flow coming from the valve!!! So stupid!Unfortunately, I could not return it because I tested it so late.

the valves doesn't close all the way theair