coolent valves & controls

A few weeks back there was a discussion about controlling coolant on CNC machines. This just showed up in my email. ---------
OEM Equipment Replacement Valves for High-End Machining Centers co-ax valves inc.
OEM Equipment Replacement Valves for High-End Machining Centers Coolant control often occurs in milliseconds to accommodate fast machining times. The co-ax by-pass valve immediately and accurately handles pressure regulation and the passage of contaminated, but useable, coolant. Even when de-energized, the positive shut-off benefit of the control tube design keeps the line from draining and avoids potential problems with dry start-up. / 2938&Comp=&md0917&mhB8793&Vol=Vol3Issue10&Pub3&LinkId)8510&keyword=link_298510&uh043e&id=-136104688&
Anybody used these?
Unka' George [George McDuffee] ------------------------------------------- He that will not apply new remedies, must expect new evils: for Time is the greatest innovator: and if Time, of course, alter things to the worse, and wisdom and counsel shall not alter them to the better, what shall be the end?
Francis Bacon (1561-1626), English philosopher, essayist, statesman. Essays, "Of Innovations" (1597-1625).
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