Patents Assigned to Barmad
  • Diaphragm valves
    Patent number: 4221361
    Abstract: A spring biased diaphragm valve having circular beads on the diaphragm one of which seats against and within the seat and the other surrounding the spring.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: September 9, 1980
    Assignee: Barmad
    Inventor: Zvi Weingarten