Description
The VB shut-off valve, also called pressure switch valve SSV or UPSO-OPSO, have the scope to
stop the gas flow when downstream pressure comes out of its operating range.
VB shut-off valve may be integrated with FG pressure regulators (FGB version) or as a single
device. These devices are suitable for use with non-corrosive gases, previously filtered.
The VB series shut-off valve are widely used in natural gas, manufactured and LP gas plants, in
both civil and industrial installations.
Product information
The safety shut-off valves VB are designed as safety devices of gas plants for civil, industrial and
commercial applications. They are suitable for low, medium and high pressure.
They are direct acting type and they could be setted for pressure increase (over pressure OPSO)
or pressure decrease (under pressure UPSO).
The VB safety devices are “top entry” design, which allows an easy maintenance without removing
the body from the line.
Main features
• Design according to EN 14382: 2009
• 2 different connections:
– threaded type
– flanged type
• Extreme simplicity and rapidity of maintenance (top entry design)
• Compact design
• Interruption of gas flow for both overpressure and underpressure (UPSO-OPSO), or for over
pressure only (OPSO).
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