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The main function of check valve
–, wafer check valve use: Check valve installed in the pipeline system, the main role is to prevent media flow back, check valve is a kind of media pressure open and closed automatically. Wafer check valve is suitable for nominal pressure PN1.0MPa~42.0MPa, Class150~ 25000; Nominal diamet...Read more -
How check valves work ？
Check valve is to rely on the flow of the medium itself and automatically open and close the valve disc, used to prevent the media flow back valve, also known as check valve, one-way valve, reverse flow valve and back pressure valve. Check valve is a kind of automatic valve, the main function is ...Read more -
Check valve usage
A, swing check valve: swing check valve disc is a disc, revolving around the shaft of the valve seat channel for rotary movement, because the valve channel into streamline, flow resistance ratio Drop check valve small, suitable for low flow velocity and flow not often change of large diameter ...Read more -
Stainless steel globe valve from NORTECH Valve
Stainless steel globe valve is a kind of globe valve, the valve body material requirements are relatively high 301.304.316 and other materials are widely used in chemical industry, shipping, medicine, food machinery and other industries. Stainless steel stop valve is divided into manual stainle...Read more -
Flange Gate Valve
[Flange Gate Valve] NORTECH brand Quality assurance, NORTECH VALVE comprehensively introduces relevant standards, type selection, function, structural drawing, specification and model of flange gate valve; Overall dimension, working principle, product manual, installation and maintenance and pro...Read more -
Fluorine Lined Valve
[Fluorine Lined Valve ] nortech brand valve. Nortech comprehensively introduces the relevant standards, type selection, function, structural drawing, specification and model of [fluorine lined valve]. Provide you with the outline dimension, working principle, product manual, installation and mai...Read more -
Common faults and troubleshooting of safety valve (2)
4. The pressure continues to rise after venting This is mainly because the displacement of the selected safety valve is smaller than that of the equipment, and the appropriate safety valve should be re selected; If the center line of the valve rod is not aligned or the spring is rusted, so that ...Read more -
Common faults and troubleshooting of safety valve (1)
The failure of safety valve is mainly caused by improper design, manufacturing, selection or use. If these faults are not eliminated in time, they will affect the efficiency and service life of the valve, and even can not play a role in safety protection. Common faults and elimination methods are...Read more -
Classification and characteristics of hydraulic control valves
Hydraulic control valve is a water pressure controlled valve, which is composed of a main valve and its attached conduit, pilot valve, needle valve, ball valve and pressure gauge. According to different purposes, functions and places, it can be developed into remote control float valve, pressure ...Read more -
Characteristics of throttle valve
Characteristics of throttle valve The throttle valve controls the fluid pressure and flow by changing the channel section. It belongs to the regulating valve class. However, due to its structural limitations, it has no regulating characteristics of the regulating valve, so it can not be used ins...Read more -
Storage Tips for idle valves to prevent rust damage
Regular maintenance: Valves that have been idle for a long time shall be inspected and maintained regularly to prevent valve corrosion and damage. For valves that have been idle for a long time, they shall be tested together with equipment, devices and pipelines, and can be used only after passi...Read more -
Analysis of structural characteristics of bellows globe valve
Bellows globe valve has good corrosion resistance and friction resistance performance as we all know, the product is made of foreign metal bellows sealing technology, high performance elastic metal bellows, telescopic fatigue life is particularly long. NORTECH valve’s bellows globe valves ...Read more
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