Materials required for laboratory air circuit system

Materials required for laboratory gas path:

Automatic switcher

Gas automatic switcher: it can switch between left and right cylinders. When the left cylinder is used up, it will automatically switch to the right cylinder for gas supply, providing an effective guarantee for uninterrupted gas supply. Automatic switching can also be equipped with a low pressure alarm sensor, which will prompt the staff to replace the cylinder when the cylinder pressure is insufficient.

Stainless steel tube

Stainless steel pipe is a hollow strip of circular steel, mainly widely used in petroleum, chemical, medical, food, light industry, mechanical instrument and other industrial pipeline and mechanical structure parts. In addition, in the same bending and torsional strength, light weight, so it is also widely used in manufacturing mechanical parts and engineering structures, supply to semiconductor, LCD, solar energy, aerospace, precision chemistry and other markets, the use of more materials usually 304, 304L, 316, 316L.

tee

Tee is a pipe fitting, pipe connector, used in the main pipe to branch pipe. Three is with three openings, namely one import, two export; Or two inlet, one outlet of a chemical pipe fitting, has equal diameter pipe mouth, also has a reducing pipe mouth, used for the convergence of three same or different pipelines. The main function of tee is to change the direction of the fluid

Check valve

Check valves, also known as check valves or check valves, are used to prevent reverse flow of gas in pneumatic systems. A one-way valve is a directional control valve in which the airflow can flow only in one direction but not in the other direction

Flame arrester

Flame arrester, also known as fire prevention, is to prevent the external flame into the flammable and explosive gas equipment, pipe or prevent flame in the equipment, pipe spread. It is used to prevent medium (such as hydrogen, oxygen, etc.) flame spread to the safety device, by a gas can pass, with many small channels or gaps of solid material (fire resistance element) composed.

Pressure reducing valve

Gas pressure reducing valve is a special device to reduce the working pressure of the pipeline. It can reduce the higher gas pressure of the pipeline in front of the valve to the required level of the pipeline behind the valve.

The filter

Filter is an indispensable device on the transmission medium pipeline, usually installed in the pressure relief valve, pressure relief valve and other equipment inlet end, gas filter is generally used in clean workshop, clean workshop, laboratory and clean room, or used for dustproof electronic mechanical communication equipment. There are five models of coarse filter, medium filter, high school filter and sub-high efficiency filter and high efficiency filter, each model has different standards and use efficiency.

Solenoid valve

Solenoid valve is industrial equipment with electromagnetic control, is used to control fluid automation components, belong to the actuator, is not limited to hydraulic, pneumatic. Used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. Solenoid valves can be combined with different circuits to achieve the desired control, and control accuracy and flexibility can be guaranteed.

elbow

Elbow is used to connect the pipe at the corner, used to change the direction of the pipe, according to the Angle, there are 45° and 90°180° three most commonly used, in addition, according to the needs of the project also includes 60° and other abnormal Angle elbow.

The size of the head

The size of the head is also known as reducing pipe, different straight pass. One of the chemical pipe fittings used for connecting two pipes of different diameters. According to the shape of the different, divided into concentric large head and eccentric size head two.

Pressure relief valve

Pressure relief valve, also known as safety valve, can automatically open and close according to the working pressure of the system. It is generally installed in closed system equipment or pipeline to protect the system safety. When the pressure in the equipment or pipeline exceeds the pressure set by the pressure relief valve, the pressure relief will be automatically started to ensure that the medium pressure in the equipment and pipeline is under the set pressure to protect the equipment and pipeline and prevent accidents

Ball valve

Ball valve for the opening and closing parts (ball) driven by the valve stem, and around the square work ball valve axis for rotary movement of the valve. Ball valve is most suitable for switch, cut off valve use, especially suitable for containing fiber, small solid material and other media. The multi-pass ball valve in the pipeline can not only flexibly control the media confluence, diversion, and flow direction switch, but also can close any channel and make the other two channels connected. This type of valve in the pipeline should generally be installed horizontally. Ball valve classification: pneumatic ball valve, electric ball valve, manual ball valve.

Bellows valve

Bellows valve is a pressure balance type regulating valve, the body structure is compact, the fluid channel is S streamline, the pressure drop loss is small, the flow is large, the adjustable range is wide. It is used in applications where stem sealing requirements are strict, such as high vacuum applications and in the nuclear industry. By the bellows to separate the medium from the atmosphere, is a packless valve. Reliable sealing performance, but complex structure, high cost, compared with diaphragm valve, its dead zone volume is large.

Diaphragm valve

The working principle of the diaphragm valve is that the valve head is pressed down by the stem which rotates together with the handwheel to make the valve close. The valve head is lifted up by the spring and air pressure to make the valve open and the diaphragm separates the medium from the atmosphere. Its advantages are good sealing, reliable, small dead zone, its dead zone volume is less than half of the same caliber bellows valve. Easy to remove trace residual gas; No relative friction between valve head and seat, no metal particles fall into the medium. It can meet the comprehensive performance of high pressure, vacuum, high and low temperature at the same time, and can be used for high purity gas system.

Needle valve

Needle valve is a kind of throttle valve, the adjustment precision is relatively high. Needle valve is a fine tuning valve whose plug is needle-shaped and is mainly used to regulate gas flow. Trimmer valves require progressively larger opening and maximum continuous fine adjustment from closing to opening. This function can be achieved with needle plugs.

The cylinder joint

The cylinder connector is the connector between the cylinder and the pipeline. The gas path is usually made of brass and stainless steel, and different gases also correspond to different models.

High pressure hose

Hose is a multi-layer flexible pipe used to transport gas from one location to another location. In gas pipeline installation, high-pressure hose plays a role in transferring gas from the cylinder to the stainless steel pipe, which has high pressure resistance.