Porvair
of King's Lynn, Norfolk.
1974 Designed a simple silencer in the form of a plastic ring for Telektron, control and systems engineers. Made of Vyon, a porous permeable material, pitted a pneumatic rotary actuator to pipe away exhaust air.[1]
2002 Polyfiltronics Ltd was a subsidiary
See Also
Sources of Information
- ↑ The Engineer 1974/06/20
