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giving an emergency backup in the event of mechanical or electrical failure
Not suitable for drinking water use
Dimensions 22
G/flex 655 gives you 45 minutes of working time at 72°F
- Provided with drain plugs for winter storage
Forespar Full Flow Ball Valves 1-1/4" MF-850 Williams & Heintz Map giving an emergency backup inFull 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
