German GSR solenoid valve A5251/0802/012 in stock

Brand

GSR/Germany

Flow Direction

Other

3C Valve Category

Industry

Application Areas

Chemical, Petroleum, Mining, Road/Rail/Marine, Comprehensive

GSR Solenoid Valve Selection Criteria:

1. Select the solenoid valve based on pipeline parameters: nominal diameter (DN) and connection type

1) Determine the nominal diameter (DN) according to the inner diameter of the pipeline or flow requirements on site;

2) For connection type, generally, flange connections should be selected for DN >50, while for DN ≤50, the connection type can be freely selected according to user needs.

2. Selecting Solenoid Valves Based on Fluid Parameters: Material and Temperature Group

1) Corrosive fluids: Corrosion-resistant solenoid valves and all-stainless steel valves are recommended; Ultra-clean edible fluids: Food-grade stainless steel solenoid valves are recommended.

2) High-temperature fluids: Solenoid valves made with high-temperature resistant electrical and sealing materials should be selected, and piston-type valves are preferred.

3) Fluid state: Fluids can be gaseous, liquid, or mixed, especially when the diameter is greater than DN25, these must be clearly distinguished.

4) Fluid viscosity: Generally, any viscosity can be selected below 50 cSt. If it exceeds this value, a high-viscosity solenoid valve should be selected.

3. Selecting Solenoid Valves Based on Pressure Parameters: Principle and Structural Types

1) Nominal pressure: This parameter has the same meaning as other general-purpose valves and is determined by the nominal pressure of the pipeline.

2) Working pressure: If the working pressure is low, a direct-acting or step-direct-acting principle valve must be selected; for low working pressure differentials above 0.04 MPa, direct-acting, step-direct-acting, and pilot-operated valves can all be selected. 4. Electrical Selection: AC220V or DC24V voltage specifications should be prioritized for convenience.

5. Selection Based on Continuous Operating Time: Normally Closed, Normally Open, or Continuously Energized

GSR solenoid valves consist of an electromagnetic coil and a magnetic core, and are valve bodies containing one or more orifices. When the coil is energized or de-energized, the rotation of the magnetic core causes fluid to flow through the valve body or be cut off, thus changing the fluid direction. The electromagnetic components of the solenoid valve consist of a fixed iron core, a moving iron core, and a coil; the valve body consists of a spool, a spool sleeve, and a spring base. The electromagnetic coil is directly mounted on the valve body, which is enclosed in a sealing tube, forming a simple and compact assembly. Commonly used solenoid valves in production include 2-position 3-way, 2-position 4-way, and 2-position 5-way valves. Here, let's first explain the meaning of "2-position": for a solenoid valve, it means energized and de-energized; for the valve it controls, it means open and closed.

A malfunctioning solenoid valve directly affects the operation of switching and regulating valves. Common malfunctions include the solenoid valve failing to operate. Troubleshooting should focus on the following:

1. Loose or detached solenoid valve wiring: The solenoid valve will not receive power. Tighten the wiring.

2. Burned-out solenoid valve coil: Disconnect the solenoid valve wiring and use a multimeter to measure. If an open circuit is detected, the solenoid valve coil is burnt out. This can be caused by moisture in the coil, leading to poor insulation and magnetic leakage, resulting in excessive current and burnout. Therefore, prevent rainwater from entering the solenoid valve. Additionally, an overly stiff spring, excessive reaction force, or insufficient coil turns can also cause coil burnout. In an emergency, switch the manual button on the coil from the normal "0" position to the "1" position to open the valve.

3. Solenoid valve stuck: The clearance between the solenoid valve's spool and valve core is very small (less than 0.008mm), and they are usually assembled as a single piece. When mechanical impurities are introduced or there is insufficient lubrication, the valve can easily become stuck. One possible solution is to insert a steel wire through the small hole at the head to make it spring back. The fundamental solution is to disassemble the solenoid valve, remove the valve core and valve core sleeve, and clean them with CCI4 to ensure the valve core moves freely within the valve sleeve. During disassembly, pay attention to the assembly sequence of each component and the location of external wiring to ensure correct reassembly and wiring. Also check if the lubricator spray hole is blocked and if the lubricating oil is sufficient.

4. Air Leakage: Air leakage will cause insufficient air pressure, making it difficult to open and close the forced valve. This is caused by damaged gaskets or worn slide valves, resulting in air leakage between several cavities. When troubleshooting a solenoid valve malfunction in a switching system, choose an appropriate time to address the issue when the solenoid valve is de-energized. If the problem cannot be resolved within a single switching interval, pause the switching system and address it at a later time.

All production procedures at the German company GSR comply with DIN EN ISO 9001 standards, and the company continuously manages and improves its production standards within its own quality management system.

GSR was founded in 1971 and belongs to the Indus Holding AG Group. Since its inception, GRS has been dedicated to the development, research, and sales of valves and fittings, covering almost all application areas. In addition to over 2,000 standard products, they also offer solenoid valves, pneumatic valves, and electric valves for high temperatures (350°C), high pressures (350 bar), and large diameters (DN400). Furthermore, they design electric valves to meet specific customer requirements.

GRS's strength lies in manufacturing customized valves to meet individual customer needs, collaborating with customers to develop solutions, and training engineers. Their core competitiveness lies in rapidly providing customized valve solutions for various application areas. Over the past 35 years, GRS engineers have manufactured over 3,000 specialized valves—reliable valves that integrate various technologies and are effectively installed in diverse environments.

GSR pneumatic valves, GSR regulating valves, GSR pneumatic regulating valves, GSR three-way electric regulating valves, GSR self-operated regulating valves, GSR pneumatic valves, GSR electric valves, GSR controllers – all supplied at discounted prices. We also offer German GSR electric valves, GSR solenoid valves, GSR pneumatic valves, GSR regulating valves, GSR pneumatic regulating valves, GSR three-way electric regulating valves, GSR self-operated regulating valves, and GSR pneumatic valves.

Because GSR possesses core products from modern machinery, it can manufacture any product its customers desire. Of course, GSR can also produce some standard, high-quality valves in a short time.

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Our company mainly deals in European and American brands and can source brands from any European country. For example, our advantageous German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, ROSS

British brands: Norgren

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi