Fugitive Emission Valves are those valves which bleed only a small amount of leakage to the external environment.In some European countries, there are customized companies to provide Fugitive Emission Testing Service for the local manufactures and end users.

The pneumatic diaphragm regulating valve has the advantages of compact structure, lightweight, sensitive action, fluid type, less pressure drop loss, large valve capacity, accurate flow characteristics, convenient assembly, and disassembly.

Due to the relatively large variety of valves used in the marine's pipelines, this creates difficulties in preparing and revising the appropriate standards for valves. Another aspect is that the use of valves in current marine pipelines in China is mainly based on manual valves such as a globe valve and gate valve. Such industrial valves are still relatively insufficient in terms of weight, volume, and sealing.

The industrial valves are in the fluid system. The device used to control the direction, pressure, and flow of the fluid is the device that allows the flow and stops of the medium (liquid, gas, powder) in the pipe and equipment and can control its flow. The valve is the fluid delivery system.

Ordinary electric valve is a universal execution unit, which is widely used in industrial process control field as a kind of important pneumatic actuators and has an irreplaceable role. The valve electric device invented by industrial valve inventor is based on the motor power.

The suction and discharge valves on the hydraulic end of the pump are one of the essential components. Most of the reciprocating pump industrial valves are automatic valves. In order to ensure the timely opening and closing and accurate operation of the valve when the high viscosity liquid is delivered, the forced valve is used.

Grinding is a method of finishing, and grinding waste are rarely seen. Due to the dimensional accuracy of the valve sealing surface, grinding waste is even rarer. Frequent occurrences of sealing surface grinding are irregularities in geometry, surface scratches, and grooving.

The opening and closing member of the gate valve is a gate. The direction of movement of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully open and fully closed, and cannot be adjusted and throttled.

The professional maintenance work of the gate valve before and after the installation plays a vital role in the service of the gate valve. The correct and orderly maintenance will protect the gate valve, make the gate valve function properly and extend the gate valve life.

Gate valves can be divided into parallel gate valves, wedge gate valves, lift gate valves, rotary lever gate valves, quick opening and closing gate valves, shrink gate valves, and slab gate valves according to different classification methods.