- CSA: B64.1.3
- ASSE: 1056
- Highest hazard protection: high or servere
- Back pressure resistant: no
- Continuous pressure resistant: yes
- Field testing required: yes
Overview/Benefits
- Provide reliable protection from back siphonage only for low, moderate or high risk systems.
- Careful consideration shall be given to the possibility of improper use of SRPVB devices, e.g., when a downstream connection is made that would permit back pressure to occur.
- The critical level must be located at least 300 mm above the overflow level of the fixture, container or accessory.
- Spill-resistant membrane
- Should not be installed below ground level, in a pit or a vault.
Application examples
- Siphon initiator
- Spittoon
- Autopsy and mortuary equipment
