Valves

Precision leak-testing instruments can detect pressure changes of 0.00001 psi and, from that, calculate leak rates.

A new valve from Clippard Instrument Laboratory Inc., Cincinnati, helps ensure air in medical and instrumentation applications — where even the smallest particles could cause serious damage downstream — is clean and contamination-free.

The Type 567 plastic butterfly valve from GF Piping, Tustin, Calif. (gfpiping.com), works with pressures up to 150 psi.

The 156 Lee Chek high-pressure check valve from The Lee Co., Westbrook, Conn. (theleeco.com), weighs only 0.7 gm, and has a 0.156-in. diameter.

The L75 Series of Limitorque electric valve actuators from Flowserve Corp., Irving, Tex., activate quarter-turn valves and other rotary devices.

It's common practice in the oil and gas industry to inject a drive gas or fluid into a well and then release it into the atmosphere once it has done its job.

Collaborative software let Fisher Valve Div. share design ideas with manufacturing engineers in Asia and head off a potentially expensive design error.