Instrumentation Valves014 - page 120

PinchValves
HighCycle Life
Each valve is factory adjusted to ensure an optimal closing forcewith the tubingprovided. TheSiliconeSelect
TM
andBio-
Chem (C-Flex) tubing havebeen specially selected and treated for excellent memory characteristics. The tubingwill not stick
shut even after prolongedperiods in the closedposition. TheSiliconeSelect
TM
tubing is rated for aminimum of 500,000
cycles.
Tubing securely seatedwithout flow restriction
The tubing is seatedwithin a groove in the pinch valve body. The tubing remains securely seated at all times. No
mechanical locking feature is required to retain the tubingduring operation. Flow is not restrictedwhen the valve is in the
openposition.
Wide assortment of sizes and configurations
Bio-ChemValve standardpinch valves are offeredwith tubing internal diameters ranging from0.010’’ (0.25mm) to5/16’’
(7.95mm). The valves are available in normally open, normally closed, and3-way (one tube normally open, the other
normally closed) configurations. Dual tubing configurations (two tubes beingoperated simultaneously) are offeredwith
smaller tubing sizes. Multi-tube pinch valveswith 4.6, or 8 tubes are available in normally open configurations only. Through
Bio-ChemValve’sQuick-ChangeCustomization™process, standardpinch valve configurations canbemodified tomeet
customer specifications. For alternative tubingmaterials, operatingpressures, electrical terminal connectors andother
features, please consult Bio-ChemValve andOmnifit.
Further advantages of Bio-Chem Valve Pinch Valves include:
Ease of installation
Resistance toparticulatedamage
Minimal pressuredrop
!
High cycle life (valve: 20million; tubing: 500,000minimum)
!
Lowpower consumption /minimal heat generation
!
Tubing securely seated in valvebody
!
Rated for continuousduty suitable for hit &hold
!
Zerodead volume closure
!
Tubingoptions selected for chemical resistance and superior
memory characteristics
!
Options for especiallyquiet operationand integratedoptical
position sensor
Solenoid operated pinch valveswith Silicone Select
TM
or
Bio-Chem (C-Flex) tubing
Inside.....
Specifications
Tubing............................. 2
Valve Series &Weight ..... 3
Leadwires ...................... 3
Electrical ......................... 3
Pressure limits ................ 3
Height ............................. 4
Enhancement options ..... 4
Mounting ........................ 5
Ordering information ............ 5
Installation drawings............. 6
Accessories ......................... 8
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