Bottom Valve/Sample Valve

BOTTOM VALVES/SAMPLE VALVE is mainly used for the bottom discharge, sampling and no-dead zone shut-off operation of reaction tanks, tanks and other containers. The bottom flange of the valve is welded to the bottom of the tank and other containers, so as to eliminate the residual process medium usually at the outlet of the container, the actual need of the discharge valve root, the bottom structure is designed for the flat bottom, the body is V-shaped, and provides two modes of lifting and lowering the valve disc. The inner cavity of the valve body is provided with a sealing ring that is resistant to erosion and corrosion. At the moment of opening the valve, it can protect the valve body from erosion and corrosion of the breaking medium, and carry out special treatment on the sealing ring, so that the hardness reaches HRC5-62, with high wear resistance and corrosion resistance, the valve disc seal is surfacing cemented carbide on the front surface as needed, and the sealing pair is sealed by wire to ensure the reliability of the seal and prevent scarring. At the same time, the design of short stroke valve disc is adopted.

Materials

WCB/A105/16Mn are mainly used for non-corrosive media, such as oil, gas, water, powder, etc.

CF-8/CF-3/304/304L are mainly used for nitric acid and refined terephthalic acid.

CF8M/CF3M/316/316L are mainly used for acetic acid, refined terephthalic acid.

Nickel-based alloy and titanium alloy are mainly used for fine terephthalic acid and strong corrosive media. Users should make the specific choice of materials according to the actual use of the medium.

Pressure temperature level

A S M E B1 6 34 specifies the pressure and temperature levels for various materials of A, S, T, and M, which specifies in detail the maximum allowable non impact pressure (gauge pressure) for different shell materials at various operating temperatures. It is one of the main benchmarks for designing and selecting valves. Therefore, when selecting a discharge valve, it is necessary to consider the operating pressure and operating temperature according to the pressure temperature level AS M E B 16 3 4 to determine the material (referring to the shell) and pressure rating (referring to the nominal pressure) of the selected discharge valve. If the operating temperature and pressure are overloaded, it may cause valve damage. When selecting valves, various conditions should be fully considered to avoid overloading of the valve force.