The sight glass with neck is also known as the pressure vessel sight glass. The difference from the conventional equipment sight glass is that there is an extra tube at the bottom of the sight glass, which is what we call the "neck". Its function is to separate the sealing of the sight glass from the welding port. It is open to minimize the impact of welding stress on the sealing surface of the sight glass. [1] The "neck" with neck sight glass is also divided into standard type and non-standard type.
quartz tube，quartz glass, quartz glass tube
Tempered borosilicate glass sight glass
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Equipment sight glass
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Quartz tube two-color liquid level gauge is widely used in petrochemical and other fields to monitor the position of medium and low pressure vessels, tanks, tanks and liquid levels. This liquid level gauge uses optical principle to directly display the liquid level position, with gas red and liquid green, and the liquid level boundary is very obvious. The liquid level gauge is a fluorescent two-color display, which is suitable for long-distance observation at night. At the same time, the user can freely rotate and choose the observation direction of this liquid level gauge, which has the advantages of large observation angle, wide viewing surface, safety and reliability. Frost proof two-color liquid level meter is suitable for liquid level monitoring of viscous media in petrochemical industry. This liquid level gauge has a heating and insulation device, and the liquid level boundary display is sensitive, clear and accurate.
Special-shaped glass
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Liquid level gauge is a direct reading liquid level measuring instrument, which is applicable to the field detection of liquid position in general liquid storage equipment in the process of industrial production. Its structure is simple and the measurement is accurate. It is a traditional field liquid level measuring tool. A needle valve is installed at both ends of the liquid level gauge. When the glass tube is broken due to an accident, the needle valve will automatically close under the pressure of the container to prevent the medium in the container from continuing to flow out.
Measurement range (installation center distance L): 300, 500, 600, 800, 1000, 1200, 1400, 1700, 2000 mm, etc
Working pressure: ≤ 1.6MPa
Material: carbon steel, stainless steel
Operating temperature: ≤ 100。 C (higher than 100. C can also be used without calibration)
Connection type: clamp chuck
Other flange standards, such as jb/t, GB, ANSI, etc., shall be noted by the user.
Tracing steam pressure: ≤ 0.6MPa
Self sealing pressure of steel ball: ≥ 0.2MPa
The dimensions of glass tube are: Φ 18， Φ 19， Φ 20 (aluminum alloy protective cover outside the glass tube)
Optical glass
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The glass tube level gauge is applicable to directly indicate the medium level in various towers, tanks, tanks and other containers. The upper and lower valves of the instrument are equipped with safety steel balls. When the glass plate is accidentally damaged, the steel balls can automatically close the liquid flow channel under the pressure in the container to prevent the liquid from continuing to flow out.
water level indicator
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Tel/whatsapp: +86 13373730761
Email: landlee@sightglassfactory.com
