Scientists have invented a three-way valve that controls the flow through a magnetic material which is attracted by an external magnet when the liquid reaches a certain temperature. Senior Scientist ...

• Standard solenoid valves pose an ignition danger near hazardous materials. • Valves with pneumatic and magnetic actuators require no electricity, making them inherently safe in hazardous locations.

Actuators from PneuMagnetic LLC, Quakertown, Pa. (www.pneumagnetic.com), can replace standard electric coils on packless solenoid valves, turning a solenoid into a pneumatically controlled device. The ...