tough new way to tame pressure up to 20 bar (290 psi)
the okumura 620 butterfly valve features a patented "touch" seat design that works together with an s-shaped disc to provide smooth, dependable bubble-tight shutoff and and extended service. The design accomodates working pressure up to 20 bar. (290 psi) and flanges comply with iso, ansi, bs, as, din and jis.
tough new way to tame pressure up to 16 bar (232 psi)
the patented "touch" seat design permits the disc to close with virtuality no frictional contact between the disc and the valve seat.
and so, there is virtuality no wear and tear on the valve's internal structure. The construction ensures a low torque-to-size ratio and improved in-service performance over a conventional design.
nominal diameter 50 - 30 mm (2 - 12 inches)
applicable flange standard jis : 16k, 20k
ansi : 125 lb, 150 lb
service pressure 20 bar. / 290 psi / 20 kgf / cm2
hydrostatic seat test 22 bar. / 319 psi / 22 kgf / cm2
hydrostatic shell test 30 bar. / 435si / 30kgf / cm2
servicetemperature range epdm seat ring : - 20° to 120° c
nbr seat ring : - 10° to 80° c
actuators lever,gear, pneumatic act. , electric act.
face to face dimensions conforms to iso standard (short)
actuator mounting flange conforms to iso standard
standard coating red
service media water, oil, etc.