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Spirax Sarco Vacuum Breakers
VB14
The VB14 is a small purpose designed vacuum breaker for general purpose applications on condensing vapour (steam) or liquid systems.
Certification
This product is available with material certification to EN 10204 2.2 for body and cap as standard.
Sizes & Pipe Connections
- ½ (system connection) screwed BSP
- ⅛ (air inlet connection) screwed BSP
| Body Design Conditions | PN16 | ||
| PMA | Maximum allowable pressure | 16 bar g @ 180°C | (232 psi g @ 356°F) |
| TMA | Maximum allowable temperature | 260°C @ 7 bar g | (500°F @ 101 psi g) |
| Minimum allowable temperature | -196°C | (321°F) | |
| PMO | Maximum operating pressure for saturated steam service | 14 bar g | (203 psi g) |
| TMO | Maximum operating temperature | 260°C @ 7 bar g | (500°F @ 101 psi g) |
| Minimum operating temperature | 0°C | (32°F) | |
| Designed for a maximum cold hydraulic test pressure of: | 24 bar g | (348 psi g) | |
VB21
The VB21 is a small purpose designed vacuum breaker for general purpose applications on condensing vapour (steam) or liquid systems.
Certification
This product is available with material certification to EN 10204 2.2 for body and cap as standard.
Sizes & Pipe Connections
- ½ (system connection) screwed BSP
- ⅛ (air inlet connection) screwed BSP
| Body Design Conditions | PN25 | ||
| PMA | Maximum allowable pressure | 25 bar g @ 120°C | (362 psi g @ 284°F) |
| TMA | Maximum allowable temperature | 400°C @ 13 bar g | (752°F @ 188 psi g) |
| Minimum allowable temperature | -48°C | (54°F) | |
| PMO | Maximum operating pressure for saturated steam service | 21 bar g | (304 psi g) |
| TMO | Maximum operating temperature | 400°C @ 13 bar g | (752°F @ 188 psi g) |
| Minimum operating temperature | 0°C | (32°F) | |
| Designed for a maximum cold hydraulic test pressure of: | 38 bar g | (551 psi g) | |
