Air safety valve
VST type

The materials used are suitable for operation in accordance with the above conditions.
Technical data identifying the valves are indicated on the label on the top of the valve.
The mechanical locking of the setting is obtained by applying an adhesive seal.
The setting of the valve cannot be changed due to a punch mark applied to the head.
Valves are inspected for settings and then a hydraulic test is performed at 37.5 bars.
Valve body (a), valve gate (c), retainer (d), pin (f): brass UNI EN 12164.

• NBR seal - or on request VITON.
• Spring: steel C98 UNI C98 UNI 3823 stainless steel AISI 302.
• Plate (g) : aluminium.
• Ring (h) : steel C75 (on request).