DN20 Sight Glass Level Gauge Measurement For Liquid Tank
Glass plate level gauge is divided into three kinds: Transparent type, reflection type and sight glass type. The level gauge is mainly composed by level gauge’s body, upper valve (gas valve), lower valve (liquid valve), drain valve, insurance steel ball and so on. When the glass plate have some cracks or be damaged, the insurance steel ball will automatically stop the side valve of gas and liquid to avoid or reduce flowing. So the worker can cut off the bottom valve to handle it. This series product is stable, sealed and reliable, simple installation, which is ideal instrument for detecting for liquid level in all kinds of containers with middle or low pressure.Connecting the upper and lower flanges of this level gauge with the upper and lower flanges of the container to form a permeator, then the height of liquid can be directly seen.
The glass plate type liquid level meter is designed based on the principle of the communicator. The liquid passage formed by the glass plate and the liquid level gauge body is connected to the measured container through a flange or a taper pipe thread to form a communicator, which is observed through the glass plate. The liquid level is the same as the liquid level in the container, that is, the liquid level.
|Nominal length (center to center ):||0~300-0~2000mm|
|Recommended length:||550, 850, 1150, 1450, 1750mm|
|Material:||Carbon steel, 304, 316L|
|Nominal pressure (MPa):||Transparent type: 2.5, 6.3; Reflection-type: 4.0; Sight glass type: 0.1, 0.6|
|Connection flange:||DN20 (3/4”); A,B type---HG20592; C type---HG20615-09|
|Heating steam cube connector:||RC1/4 internal thread|
|Heating steam pressure:||≤1.0MPa|
|Steel ball closing pressure:||≥0.3MPa|
Workshop and Processing
Tips for installation
1. During installation, in order to ensure the function of automatic sealing, the liquid in the container must have a certain pressure, at least more than 0.2MPa. When the upper and lower valves are opened, the valve stem quitting cannot be less than four turns. When the steel ball seals the door, it does not hit the top of the valve stem to avoid damage.
2. In the process of transportation and unpacking, we must be careful not to encounter something harder to avoid breaking the glass plate.
3. Also pay attention to the specifications and models, cannot install the wrong gauge level gauge, some media on the leveler is limited, such as some of the glass or steel plate corrosive media cannot be used.
4. Other maintenance clean, wash and install with the glass tube level gauge is similar