Marine News

  What Is A Solenoid Valve? Solenoid valve   is a kind of valve, which is driven by electromagnetic coil and belongs to the actuator. There are many kinds of  solenoid valves , including  check valves ,  safety valves , direction control valves  and  speed regulating valves . They play a role in different positions of the control system, and can achieve the desired control according to different circuits, and ensure the accuracy and flexibility of the control. The working principle of the  solenoid valve  usually includes two states of power and power failure. When energized, the electromagnetic coil generates a magnetic field that attracts magnetic substances in the core, such as iron filings, to cut off the power supply. When the power is off, the magnetic field disappears, the armature draws, and the valve is closed by spring return. The working mode of the solenoid valve has two types: normally closed type and normally open type. Normally...

  What Is A Check Valve? Check Valve , also known as a return valve, check valve, bottom valve or check valve, is a valve that only allows fluid (liquid or gas) to flow in one direction. A check valve is a double-port valve, meaning that there are two openings in its body, one for fluid entry and the other for fluid exit. According to the structure of the  c heck valv e , it can be divided into several types, such as lifting check valve, swing check valve and  butterfly check valve . According to the different connection forms, check valves can be divided into several forms such as threaded connection, flange connection, welding and sandwich connection. ​ In a ship's piping system,  check valves  are usually installed on the outlet line of the pump to prevent the backflow of the medium. When the pump stops working, the check valve automatically closes to prevent the medium from flowing back into the pump, thereby protecting the pump and the entire piping system ...

  What Is A Turn The Valve? Turn The Valve , also known as rotary valve type  reversing valve , is a valve that changes the flow direction of the medium by rotating the valve body. This valve is usually used to control the switching and conversion of liquid media between different pipelines. Its working principle is to use the inclination of the spool and the mechanical transmission device to rotate the spool to achieve the purpose of controlling the flow direction of the medium. Turn The Valve  is mainly composed of valve body, valve core, driving device, sealing parts, etc. The spool is the key component of the rotary valve, and the movement of its shape and position controls the path of the medium flow. The spool is generally cylindrical or conical, and is used in conjunction with the sealing parts of the valve to control the flow direction of the medium. In addition, Turn The Valve has ram and other accessories, the direction of motion of the ram is perpendicular to t...

  What Is A Fire Control Valve? Fire control valve  is a valve device used to regulate water flow in fire control system. It is usually used to control the import and export of water, ensure the supply of fire water sources, and can control the direction of water spray and water pressure during fire fighting. Fire control valves  are generally made of copper to provide a longer service life for pipes and containers. They generally not only have all the functions of ordinary SN type indoor hydrants, but also have the functions of free rotation of water outlet and decompression and pressure reduction. By rotating, to bring convenience to the installation. By reducing pressure and stabilizing, the pressure behind the initial bolt remains stable, ensuring safe and reliable use. At the same time, it can simplify the design and calculation of the fire fighting system, simplify the system, and make it an indispensable fire extinguishing device in the ideal high-rise building. Th...

  What Is A  Ball Valve ? A ball valve  is a  globe valve  that controls the flow of liquid or gas through a rotating ball with a hole. By rotating the ball a quarter of a turn (90 degrees) around its axis, the medium can flow through or be blocked. They are characterized by a long service life, even if the valve is not used for a long time, it can provide a reliable seal throughout the service life. Common ball valve types Standard (threaded) ball valve A standard ball valve consists of a housing, a seat, a ball and a lever for rotating the ball. They include valves with two, three, and four ports, which may be internally threaded or externally threaded or a combination thereof. Threaded valves are the most common and come in many types: with approval for a specific medium or application, mini ball valves, angular ball valves, ISO top ball valves with integrated filters or discharge points, the list goes on. They have a wide range of options and large operating...

  What Is A Butterfly Valve? ​ Butterfly valve  is a simple structure, good sealing, long service life of the valve. Marine butterfly valve is widely used in the water supply system, sewage system and other fields. It is usually installed in the pipeline system of the ship to control the flow rate, pressure and direction of the fluid. ​ Marine butterfly valve  structure is mainly composed of valve body, valve plate and valve stem, wherein the valve plate can be rotated around the axis to open or close the valve. By rotating the stem, the opening degree of the valve plate can be adjusted to control the flow rate and pressure of the fluid. There are many types of  butterfly valves . Classified according to sealing form: forced seal butterfly valve, elastic seal butterfly valve, pressure seal butterfly valve,  automatic seal butterfly valve , etc.; According to the working pressure classification: vacuum butterfly valve, low pressure butterfly valve, medium pressur...

  What Is Gate Valve? Marine gate valve  is a special valve, mainly used to control the flow of liquid in the pipeline inside the ship. It is composed of a valve body, a seat, a disc, a stem and a handle, and has two modes of manual operation and electric operation. ​ Gate valves  work by driving the stem through a handle or a motor so that the disc moves up and down within the seat to open or close the valve. When the valve is closed, the medium flow in the pipeline can be cut off; When the valve is open, the medium can be allowed to flow through the valve. Marine gate valve   is characterized by simple structure, convenient operation, safety and reliability. Because the Marine gate valve needs to be switched on and off frequently in the ship's pipeline system, it needs to have good sealing performance and wear resistance. At the same time, because the Marine gate valve needs to be used at sea, it also needs to have good corrosion resistance and weather resistance. ...