- Refrigeration service: the stem is a self-contained which opens to admit gas to a chamber.
- Brass service valve: pass the conducting leak-down pressure tests on pipe installations by plumbers.
- Service access valve: the access valve is made of superior premium solid brass, durable.
- Service valve: widely used in the air condition refrigerant system, it is used to charge the refrigerant.
- Refrigeration monodirectional valve: each access valve has a core and a cap with valve core remover.