Help With Binks Sprayer

[RayburnGuy]

I've got an old Binks spray gun with the paint canister attached under it. Could someone tell me what air pressure is required to run it? Tried it out just using plain water and it won't spray. I took it apart and made sure it was clean, but it still won't spray. I also made sure the vent on top of the canister was clear and open. If you take the paint canister off and drip water into the siphon tube it sprays fine. The air pressure was at 60psi. Is that enough?

thanks guys,

Ben

[spoonbender]

I've got an old Binks spray gun with the paint canister attached under it. Could someone tell me what air pressure is required to run it? Tried it out just using plain water and it won't spray. I took it apart and made sure it was clean, but it still won't spray. I also made sure the vent on top of the canister was clear and open. If you take the paint canister off and drip water into the siphon tube it sprays fine. The air pressure was at 60psi. Is that enough?

thanks guys,

Ben

I don't have any Binks guns but mine all run from 30 to 70 psi, depending on what I'm spraying. If it sprays when gravity feeding, can only assume that it has a plugged air passage in the siphon tip or a gasket/O-ring is out of order. I did once put a pressure feed tip on a gun set up for siphon feed by mistake, wouldn't draw the fluid up the siphon tube. Is your air pressure 60 PSI at the gun or to the supply line? You can lose a quite a bit of pressure using 1/4" air hose, depending on it's length. Good luck Ben!

[RayburnGuy]

I don't have any Binks guns but mine all run from 30 to 70 psi, depending on what I'm spraying. If it sprays when gravity feeding, can only assume that it has a plugged air passage in the siphon tip or a gasket/O-ring is out of order. I did once put a pressure feed tip on a gun set up for siphon feed by mistake, wouldn't draw the fluid up the siphon tube. Is your air pressure 60 PSI at the gun or to the supply line? You can lose a quite a bit of pressure using 1/4" air hose, depending on it's length. Good luck Ben!

The 60psi was at the regulator mounted on the compressor and the 1/4" hose was 25' long. Not sure of the exact pressure at the gun. I have no idea what tip the gun has in it. Wouldn't even know how to tell the difference between a siphon feed tip and a pressure feed tip. I'll try looking them up on the 'net.

Thanks Spoonbender,

Ben

[Musky Glenn]

I used a Binks quite a bit spraying furniture and I don't remember ever having one that wouldn't spray with the cup on, if it would spray with the cup off, Unless the vent hole in the top was stopped up. They will spray with the pressure down to 10-15 pounds of pressure with thin liquids like water. Is the gun holding air pressure in the line, instead of leaking pressure off the line. If it is not leaking air then air pressure will equalize in the line equal to the regulator for a brief second when you pull the trigger. I would check the tip parts for being clogged. They are as easy to clean as an air brush. I used to put a pint of lacquer thinner in the bottom of a 5 gallon bucket, strip the gun and leave it in the bucket, with the lid on over night and the fumes from the thinner will soften up anything I ever sprayed through the gun. Hope this helps. Musky Glenn

[RayburnGuy]

I used a Binks quite a bit spraying furniture and I don't remember ever having one that wouldn't spray with the cup on, if it would spray with the cup off, Unless the vent hole in the top was stopped up. They will spray with the pressure down to 10-15 pounds of pressure with thin liquids like water. Is the gun holding air pressure in the line, instead of leaking pressure off the line. If it is not leaking air then air pressure will equalize in the line equal to the regulator for a brief second when you pull the trigger. I would check the tip parts for being clogged. They are as easy to clean as an air brush. I used to put a pint of lacquer thinner in the bottom of a 5 gallon bucket, strip the gun and leave it in the bucket, with the lid on over night and the fumes from the thinner will soften up anything I ever sprayed through the gun. Hope this helps. Musky Glenn

I'll check everything and clean it again. No telling what these 56 year old eyes missed. Thanks Musky Glenn.

Ben

[RayburnGuy]

Just wanted to thank you guys for the help. After figuring out it wasn't an air pressure problem I dug a little deeper and found that a needle valve was sticking. After cleaning it and giving it a light lubrication the gun started spraying like a champ. I can now add Binks paint sprayer mechanic to my list of achievements.

thanks again for the help,

Ben