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Announcing—
I?W3? ÊfflBti HOKE REPORTS ON FLUID C O N T R O L ( 2 )
WE PACKED PERFORMANCE IN A PACKLESS VALVE T h e development of packless valves h a s so greatly reduced t h e problems of handling high pressures, temperatures a n d vacuums, a n d dangerous fluids that engineers designing such systems can now spend more time curled u p with t h e Hoke Corrosion Chart.* With this extra time, many have dreamed u p weird applications for the Hoke 440 Series bellows seal valve, trying to snare us in o u r own semantics. In a rash moment, we boasted that this valve could be modified for almost any application. Actually, the 440 c a n be modified to work at high pressures ( u p to 2000 p s i ) , for high temperatures ( u p to 1 0 0 0 ° F . ) , a n d for special connections such as tubing, socket welding, and silver brazing. Aside from this hornblowing, here are the dry facts. T h e basic design includes a stainless steel body, inert arcwelded bellows assembly, Teflon gaskets and Teflon stem point discs. T h i s is only the starting point. Minor modificat i o n s m a k e so m a n y models available that almost any problem, inThe cesium boiler shown above uses a modified cluding liquid metal version of the Hoke 440 handling, can be solved. series bellows seal valve. Hear what a disbeliever s a i d : "I did not believe t h a t the modified valves would satisfy all my requirements, especially to keep a high vacuum of t h e order of 10" 5 m m H g u n d e r a wide variation of t e m p e r a t u r e s ; however, I now acknowledge that t h e modified H o k e 440 valves fulfilled their duty perfectly." T h i s c a m e from T h e M a r t i n Company, where we sent 440's for use in cesium vapor up to 400°F. Special modifications m a d e these valves readily usable on a cesium boiler a n d converted an infidel to the true valve. If you work with critical high vacuum, high pressures, high temperatures a n d dangerous fluids, proceed with care. Ask for our Packless Valve Bulletin to reap a harvest of engineering plums.
5th Decennial Index to Chemical Abstracts A
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Covering: 5 4 3 , 0 6 4 Abstracts of Papers 1 0 4 , 2 4 9 Abstracts of Patents
Keyed by: Authors Formulas Subjects Patent Numbers Organic Rings
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