What valve type should I be looking for?
What valve type should I be looking for?
(OP)
Season's greetings all.
I'm over here from the smoke-and-mirrors side looking for some guidance on a valve I need.
I have to electrically control grease, (Lithium Complex), going to a greasing tool on an assembly line. The grease is delivered by a pipe to 'this' solenoid valve. The hose is 3/8". Pressure is about 1000psi. I will be opening the valve for a few hundred milliseconds to feed from the valve down a 15 foot hose to the applicator.
Grease.. I am not actually sure of what kind of valve I should be hunting for. Probably NOT a piloted valve. Is this going to be a needle valve? I presume this is in the realm of hydraulics and so should be rated as such and not be some brass Asco.
I'm over here from the smoke-and-mirrors side looking for some guidance on a valve I need.
I have to electrically control grease, (Lithium Complex), going to a greasing tool on an assembly line. The grease is delivered by a pipe to 'this' solenoid valve. The hose is 3/8". Pressure is about 1000psi. I will be opening the valve for a few hundred milliseconds to feed from the valve down a 15 foot hose to the applicator.
Grease.. I am not actually sure of what kind of valve I should be hunting for. Probably NOT a piloted valve. Is this going to be a needle valve? I presume this is in the realm of hydraulics and so should be rated as such and not be some brass Asco.
Keith Cress
kcress - http://www.flaminsystems.com





RE: What valve type should I be looking for?
If you had a 4 way valve you could energise it to pick up a small volume of grease then when it de-energized blow the grease down the line with air. That way you would be able to meter the grease with a timed pulse.
Come to think of it you would need a 3 way for the grease and a 2 way for the air.
Step 1 - energise spool valve opening ports A&B, spool fills with grease from A but cannot escape because you have port B plugged
Step 2 - de-energise spool valve which now uncovers ports C&D.
Step 3 - Open 2 way air valve connected to port C and blow grase out of port D
Step 4 - close air valve.
Roy
RE: What valve type should I be looking for?
http://www
Ted
RE: What valve type should I be looking for?
hydtools; Those look spot on. Their site is truly ONEROUS to work with. I think I can safely say "I hate it!"
After an hour I was unable to locate any reference to them.
Since I was unable to even figure out which division sells them; What do they cost? Where could I buy them?
Thanks guys!
Keith Cress
kcress - http://www.flaminsystems.com
RE: What valve type should I be looking for?
So you just need to inch the grease down the pipe. I don't think simple timing will be that effective. As the grease changes in temperature you will get more or less, you need some sort of positive displacement pump. Something like a leaver actuated grease gun or a gear pump driven by a stepper motor.
Let us know what you end up with.
Good luck
Roy
RE: What valve type should I be looking for?
Keith Cress
kcress - http://www.flaminsystems.com
RE: What valve type should I be looking for?
http://www.oilrite.com/air_grease1.htm
Mike Halloran
Pembroke Pines, FL, USA
RE: What valve type should I be looking for?
RE: What valve type should I be looking for?
http://www.ldi-industries.com/05987.htm
Ted
RE: What valve type should I be looking for?
I think you have struck the nail on the head. I have seen a similar device for lubricating the bull gear on ball mills. Some even have a microswitch that verifies each stroke.
A star to you
Roy
RE: What valve type should I be looking for?
That grease injector looks like a dandy there MikeHalloran. But since the existing system is strictly an open/shut valve I'm a bit hesitant.
Keith Cress
kcress - http://www.flaminsystems.com
RE: What valve type should I be looking for?
The advantage of Mike's unit is it gives you a known quantity for each pulse of the 3 way solenoid. It has a stroke adjustment to set the volume, if you need more pulse it several times.
It's really a metering pump.
Roy