Valve Magazine - Winter 2010

FOCUS: Pharmaceutical Applications
A New Type of Sanitary
Check Valve

One problem associated with sanitary check valves is that most designs use an internal spring to assist in closure. This internal spring is in the waterway and can result in media entrapment and particle generation.

PBM’s solution was to develop a sanitary check valve that contained no internal springs, cracks, crevices or other localized depressions that could trap fluid. The design uses a TFM poppet that requires crack pressures as low as 0.1 psi. The valves are available in both vertical and horizontal no-offset designs in a wide range of wrought materials including 316L, AL6XN, Hastelloy C- 22

and C-276, and many other alloys. Sizes range from ½-inch through 4-inch, in both sanitary clamp and extended weld stub designs to US tubing, DIN and ISO dimensions.

These ultra-sanitary check valves are specifically designed for use in biotech and pharmaceutical applications including WFI lines, back-flow prevention of condensate, sampling systems, low pressure sterile steam and sterile filling lines. All elastomer materials are FDA compliant. Visit PBM’s website for complete information along with animations of the valves in action.

FOR MORE INFO: WWW.PBMVALVE.COM

INDEX TO

ADVERTISERS

Intelligent Valve Manifold

The benefits of Foundation fieldbus can now be realized in an integrated modular pneumatic valve manifold system. With two modes of operation, the Asco Numatics FF valve manifold can be used as a simple general purpose FF I/O unit with attached valves and discrete I/O modules; this mode allows control of 32 IN & 16 OUT. Moreover, the valve diagnostic mode (valve monitoring system) allows simultaneous controls of 8 VMS single- or double-acting actuators with a single FF node.

Integrated diagnostic capabilities include travel times, break times, lost position, cycle counter and auto calibration. These are reported back to Delta V and easily read via the AMS software’s built-in alarm functions.

FOR MORE INFO: WWW.ASCOVALVE.COM

Two- and Three-way Clean Service Control Valves

STERI-TROL S Series clean service control valves by Spirax Sarco are designed for use in applications such as clean steam, pure steam, de-mineralized or reverse osmosis water and sterilize-in-place/clean-in-place (SIP/CIP).

The two-port, pneumatically actuated design has a high performance, double stem seal to protect it from particulate damage and ensure a long service life. A three-port model is also available for mixing and diverting fluids. The S Series is self-draining and crevice-free to promote cleanliness and eliminate potential for contamination. The clamp body/bonnet connection allows for quick inspection and easy in-line maintenance.