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ASTRONOMICAL DATA - Sun & Moon Tables
Evercoat Coloring Agents may be used to tint the material to desired color
Large knurled wheels are released with ease
Woods Hole
Forespar Full Flow Ball Valves 3/4" MF-850 Navigation & Electronics ASTRONOMICAL DATA - Sun &Full Flow Ball Valves MF 850 These MF 850 Ball Valves have NPS straight (aka parallel) threads at each end, and are designed to be fitted with straight thread thru hull or pipe fittings. Straight threads are not "self sealing". You must use pipe joint compound, thread seal compounds, or "Teflon tape" to seal the threads when making connections. An advantage of parallel threads over tapered threads, however, is that there is maximum engagement between
