Description
- Installed in vapour plumbing as safety devices to relieve pressure or vacuum build up when vapour systems are blocking during loading/unloading
- 4″ TTMA flange mounting (Aluminum)
- Stainless steel shaft and buna seals
| Part # | Description |
| VRP3500 | Outbreathing vent (opens at 1 PSI pressure) |
| VRV3501 | Inbreathing vent (opens at 1.5" Hg vacuum) |
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