Guardian Vacuum Breaker, NPS Swivel Connection
The Betts’ GuardianTM vacuum breaker is a spring loaded reclosing vacuum relief valve for use on a cargo tank’s 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
- 316 Stainless Steel construction
- Teflon seals and wear components
- Seal tabs on shroud and swivel nut for security measures.
- Simple In-place Maintenance
- Available ECTFE (Halar®) coated.
- Multiple sizes and mounting options
- Multiple seal options
- Vibration damping design
- 1” NPT and ¼” NPT mounting ports
- 3″ and 4″ NPS Swivel connection
Product Details
| Part Number | Size and Connection | Weight lbs. [kg] |
|---|---|---|
| RVV3S*-** | 3" NPS SWIVEL | 4.5 [2.0] |
| RVV4S*-** | 4" NPS SWIVEL | 5.9 [2.7] |
| - An Example of a part number would be RVV3ST. This would have PTFE seals. - Values shown are test values. Actual results may vary due to service conditions. |
||
| * Code | Material | Temp. Range |
|---|---|---|
| T | PTFE | -40°F - 400°F [-40°C - 204°C] |
| F | Fluorosilicone | -50°F - 350°F [-45°C - 176°C] |
| K | Kalrez | -20°F - 400°F [-28°C - 204°C] |
| VB | FKM BLT | -15°F - 400°F [-26°C - 204°C] |
| * Designates Seal Material | ||
| Size | Set Vacuum (PSIG) | Vacuum Flow |
|---|---|---|
| 3" | 1.5 | 18,000 SCFH @ 3.0 PSIG |
| 4" | 1.5 | 18,000 SCFH @ 3.0 PSIG |
Seal Kits & Accessories
Seal Kit part number: SK-RV VT*
*Mounting gasket not included in seal kit
Spanner wrench part number: 75825EY