Actuator Sealing Force

The Rattiinox CAD valves are ideal for a wide range of aseptic process applications. There are two sizes of CAD Valve spring to close actuators, 0-6 bar (87 psig) and 0-16 bar (232 psig).  Important to engineers is the calculation of this closing force.  Where some valve manufacturers calculate the normally closed (NC) pressure limit in the […]

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Aseptic Process Solutions

Thanks for visiting.  Coming soon to this site will be a collection of solutions for aseptic processes. Today’s bio-processing challenges demand systems that are easier and more readily cleanable in place.  A correctly designed system that has no dead-legs will result in better cleaning, sterilization and drying with the added benefits of reducing overall system volume […]

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Radial Seal vs Membrane?

Radial diaphragm valves are characterized as Aseptic, whereas membrane valves are hygienic. What’s the difference?  Image 1 Membrane valves by design struggle with asymptotic seals, long dead legs, unused portions, CIP problems and low resistance to steaming in place (SIP) and short membrane life.  From the image above it can be easily seen that the four bolt torque system can result inconsistent […]

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