I finally completed the modifications to my "Extreme Booster Pump" and now I'm satisfied with how it performs. I added a check valve to the high pressure output. Now I no longer have a pressure drop during piston return and the gauge holds steady and easy to read. I also added a metering valve between the regulator and air-button so I can control the pumping speed. I like things to happen slowly while I monitor the pressure gauge. I also added a pressure gauge.
I have to say I'm a bit disappointed with Extreme Big Bore. The booster pump was operable as it came but it could be much improved with these additions. I did find a couple of quality problems with the pump as purchased. The first time I pressurized it I could hear the hiss of air and found that it was the low pressure quick connect which connects to the air button. It leaked like a sieve. The socket was loose and sloppy, almost like the wrong type socket for the plug. I couldn't get it to seal and had to replace it. The other problem was one of the male foster fittings was too large in diameter and I had nothing that would fit it.
I saw a photo on the web of an earlier version of this pump being sold by Extreme. It had all of these items I just added !!! I wonder why they took them off. Did they think they were unnecessary or were they just cutting cost ?
I have to say I'm a bit disappointed with Extreme Big Bore. The booster pump was operable as it came but it could be much improved with these additions. I did find a couple of quality problems with the pump as purchased. The first time I pressurized it I could hear the hiss of air and found that it was the low pressure quick connect which connects to the air button. It leaked like a sieve. The socket was loose and sloppy, almost like the wrong type socket for the plug. I couldn't get it to seal and had to replace it. The other problem was one of the male foster fittings was too large in diameter and I had nothing that would fit it.
I saw a photo on the web of an earlier version of this pump being sold by Extreme. It had all of these items I just added !!! I wonder why they took them off. Did they think they were unnecessary or were they just cutting cost ?