- CSA: B64.2
- ASSE: 1011
- Highest hazard protection: high or severe
- Back pressure resistant: no
- Continuous pressure resistant: no
- Field testing required: no
Overview/Benefits
- HCVB devices are subgroups of AVB devices;
- Intended for low risk installations such as faucets to which a garden hose can be attached.
- Must be installed on the outlet side of the shut-off valve.
- If the shut-off valve is closed, the check valve closes and the breather vent opens, allowing air to enter downstream.
- Incorporate a check valve that is force-loaded to the closed position;
- Install so that air vents cannot be submerged.
- Withstand low back pressure that can occur if the end of the hose is higher than the hose valve when closed.
Application examples
- Faucets to which a garden hose can be attached
