This is a HPA fittings warning for anyone who either has – or is thinking of getting – a PCP airgun. It’s been a voyage of discovery for me…The important points are these:1. Contrary to what “everyone” says, there is no standard for these quick disconnect fittings.2. You need to inspect your fittings TODAY as they can become damaged with use. I found one and it’s frightened me!
Just picked up a Yong Heng compressor. I used it to fill my AEA HP Carbine .5L CF bottle. Then I grabbed the fill probe for my KAM P12 and tried to top it off. I noticed that the pressure gauge didn't start climbing right away. I shut off the compressor and started checking things out. The female quick connect on the whip didn't have enough clearance for the ball bearings to fall into the grove on the male end. I had to "force" it by pushing harder and rotating the female coupling to get it to lock on properly.
I had a Yong Heng brass fitting blow apart on me at 4,000 psi. Be very careful.
Quote from: Steveoh on December 02, 2021, 09:37:49 PMI had a Yong Heng brass fitting blow apart on me at 4,000 psi. Be very careful.Nope not me. I’m thinking about building an enclosure for filling scba tanks. I get nervous after that failure.I saw a post on the YH FB page a couple of weeks ago. The outer ring on the quick connect blew apart. The guy got 14 stitches in his inner thigh. Hope it wasn't you!
Quote from: customcutter on December 02, 2021, 09:15:03 PMJust picked up a Yong Heng compressor. I used it to fill my AEA HP Carbine .5L CF bottle. Then I grabbed the fill probe for my KAM P12 and tried to top it off. I noticed that the pressure gauge didn't start climbing right away. I shut off the compressor and started checking things out. The female quick connect on the whip didn't have enough clearance for the ball bearings to fall into the grove on the male end. I had to "force" it by pushing harder and rotating the female coupling to get it to lock on properly. I had a Yong Heng brass fitting blow apart on me at 4,000 psi. Be very careful.
I learned some nifty tricks working with HP air system (and other pressurized fluids from H2 to monoethanolamine) during my time as a submariner... secure quick disconnects with short lanyards- I use shorty sections of stainless cable with doubled ferrules. QDs fail, simple fact of life. It's far safer to have it just make a loud pop or a Pppppppssshwwwwwwwwwwwwwt and move all of an inch or two, versus the unhappy sound followed by getting struck by a whipping/swinging or simply launched section of HP Air Hose propelled by the rapid expulsion of a fluid.I also inspect my QDs for wear, but that should be expected for everybody.