Item Rubber Lining Butterfly Valve Soft Single Seat
Seat Deformation due to fluid pressure,temperature,torque Bi-directional shutoff sealing
Seat Life 3,000 cycle More than 100,000 cycles
Working temperature -10�Ž�`80�Ž -45�Ž�`180�Ž
Item Ball Valve Soft Double Seat
Seat Bi-directional shutoff sealing Bi-directional shutoff sealing
Seat Life 10,000 cycles More than 100,000 cycles
Open/Close cycle Life 100,000 cycles More than 500,000 cycles
Item High performance Butterfly Valve
Metal Seat
Metal Seat
Sealing Allowable leakage ISO5208 Leak rate C ANSI class ‡X
(smaller than 12")
ANSI class ‡W‚w10
-1
(over 14")
Max. Pressure 4.9MPa 10.2MPa
Max. Temperature 600�Ž 650�Ž
Sealing Life Leakage increases due to partial abrasion 20,000 cycles
No change in leakage
Item High performance Butterfly Valve
Soft Single Seat Soft Double Seat
Sealing Bi-directional Tight shutoff Leak zero Leak zero
Max. Pressure 1.96MPa 1.0MPa 10.2MPa
Max. Temperature 200�Ž 180�Ž 200�Ž
Min. Temperature -20�Ž -45�Ž -45�Ž
Sealing Life �| More than 100,000 cycles More than 100,000 cycles
Open/Close cycle Life �| More than 500,000 cycles More than 500,000 cycles
 
Item Gate/Parallel Slide Valve Soft Double Seat
Sealing Allowable Leak rate:API598 Bi-directional
Leak zero
Sealing Life �| More than 100,000 cycles
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For further information, please contact us.
Telephone:+81-550-76-1948
e-mail:overseas-sales@nbs-valve.co.jp