DILO Self-Sealing Valves and Couplings

Providing decades of reliable, emission free gas handling

DILO's self-sealing valves and couplings allow a connection to be made by simply screwing two coupling parts together. DILO's innovation revolutionized the fitting industry by providing a more reliable alternative to rubber o-rings to create a seal. Prior to the closing of metal to metal seal, the pressure and vacuum tight coupling is sealed on the inside by means of an O-ring. When the coupling are loosened, the same O-ring prevents gas loss whilst the self-sealing valves close.


DILO self-sealing valves and couplings- open

Open coupling

DILO self-sealing valves and couplings- closed

Closed coupling