The Betts GuardianTM vacuum breaker is a spring loaded reclosing vacuum relief valve for use on a cargo tanks vacuum relief system. The vacuum breaker is designed, tested and marked in accordance with 49CFR §178.345-10, 49CFR §178.347-4 and 49CFR §178.348-4.
- Compact optimized flow design
- Seal tabs on shroud and swivel nut for security measures.
- Simple in-place maintenance
- Vibration damping design
- Size: 4 in.
- Connection: Swivel NPS
- Material: 316 Stainless steel
- Seal Material: PTFE
- Set Vacuum: 1.5 PSIG
- 1 in. NPT and ¼ in. NPT mounting ports
- Temperature Range: -40°F - 400°F (-40°C - 204°C)
- Flow: 18,000 SCFH @ 3.0 PSIG