
STRUCTURAL PRINCIPLE
The upper and lower needle shaped valve bodies of the liquid level gauge are connected to the container in the form of threads or flanges, allowing for direct observation of the liquid level height. Both the upper and lower needle valves are equipped with steel balls. When the glass tube accidentally breaks, the steel balls quickly close the valve channel under the pressure inside the container to prevent the medium from spraying out.
TECHNICAL PARAMETER

- Working pressure: ≤ 1.6MPa Medium temperature: ≤ 200 º C
- Self sealing pressure of steel ball: ≥ 0.3MPa
- Heat tracing steam pressure: ≤ 0.6MPa
- Interface size of heat tracing tube: M12 × 1 (external)
- Connection method:
UG-1 type: threaded connection G3/4 "(external)
HG5 type: flange connection, DN20
Plane (A): HG20593-97, JB/T81-94
Convex surface (B): HG20595-97, JB/T82.1-94