PTFE bellows solenoid valve prevents fugitive emission leaks
Mike Edwards
Products Plast-O-Matic PTFE
The series EASMT/EASYMT PTFE bellows solenoid valve from Plast-O-Matic is designed for severe service applications with most types of liquids. Units are suitable for pressure, drain or vacuum service, and sizes range from 1/4 to 1 in.
The Plast-O-Matic valves are spring return normally closed and direct-acting with a simple push-pull plunger design. There is no minimum pressure required for operation.
The PTFE bellows shaft seal is said to eliminate the need for an elastomer seal which can weaken as a result of chemical attack.
The PTFE bellows assures smooth, non-sticking operation, the company says, and has a cycle life of over 2 million in laboratory conditions.
The bellows design also allows a stock valve to be used for vacuum or pressure. The poppet seat ensures bubble-tight shutoff.
Print this page
