ROSS 2771B3001 solenoid valve (USA) available now.

Brand

ROS/USA

Flow Direction

Other

3C Valve Category

Industry

Application Areas

Medical & Health, Environmental Protection, Food/Agricultural Products, Chemical, Petroleum

ROS solenoid valves are electromagnetically controlled industrial devices, fundamental components of automation used to control fluids. They are actuators, not limited to hydraulic or pneumatic systems. Used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, ensuring both precision and flexibility. There are many types of solenoid valves, each playing a different role in the control system. The most common are check valves, safety valves, directional control valves, and speed control valves.

Working principle of American ROSS solenoid valve:

American ROSS solenoid valves have a sealed chamber with through holes at different positions, each hole connecting to a different oil pipe. In the middle of the chamber is a piston, and on either side are two electromagnets. When the coil of one electromagnet is energized, the valve body is attracted to that side. By controlling the movement of the valve body, different drain holes are opened or closed. The inlet hole is always open, allowing hydraulic oil to enter different drain pipes. The oil pressure then pushes the piston in the cylinder, which in turn drives the piston rod, which in turn drives the mechanical device. Thus, the mechanical movement is controlled by controlling the current to the electromagnets.

Main classifications of American ROSS solenoid valves: Three main categories

(1) Direct-acting solenoid valve:

Principle: When energized, the electromagnetic coil generates electromagnetic force to lift the closing element from the valve seat, opening the valve; when de-energized, the electromagnetic force disappears, and the spring presses the closing element onto the valve seat, closing the valve.

Features: Can work normally under vacuum, negative pressure, and zero pressure, but the nominal diameter is generally no more than 25mm. (2) Step-by-Step Direct-Action Solenoid Valve:

Principle: It combines direct-acting and pilot-operated principles. When there is no pressure difference between the inlet and outlet, upon energization, the electromagnetic force directly lifts the pilot valve and the main valve closing element sequentially upwards, opening the valve. When the inlet and outlet reach the starting pressure difference, upon energization, the electromagnetic force actuates the pilot valve, causing the pressure in the lower chamber of the main valve to rise and the pressure in the upper chamber to fall, thus using the pressure difference to push the main valve upwards. When de-energized, the pilot valve uses spring force or medium pressure to push the closing element downwards, closing the valve.

Features: Reliable operation even at zero pressure difference, vacuum, or high pressure, but requires higher power and must be installed horizontally. (3) Pilot-operated solenoid valve:

Principle: When energized, the electromagnetic force opens the pilot orifice, causing a rapid drop in pressure in the upper chamber. This creates a pressure differential around the closing element, with the pressure lower at the top and higher at the bottom. The fluid pressure pushes the closing element upward, opening the valve. When de-energized, the spring force closes the pilot orifice. The inlet pressure quickly passes through the bypass orifice, creating a pressure differential around the closing element, with the pressure lower at the bottom and higher at the top. The fluid pressure pushes the closing element downward, closing the valve.

Features: Higher upper limit of fluid pressure range; can be installed arbitrarily (customization required), but must meet the fluid pressure differential condition.

2. Based on differences in valve structure, materials, and operating principles, solenoid valves are divided into six subcategories: direct-acting diaphragm structure, step-by-step direct-acting diaphragm structure, pilot-operated diaphragm structure, direct-acting piston structure, step-by-step direct-acting piston structure, and pilot-operated piston structure. 3. Solenoid valves can be classified by function: water solenoid valves, steam solenoid valves, refrigeration solenoid valves, cryogenic solenoid valves, gas solenoid valves, fire-fighting solenoid valves, ammonia solenoid valves, gas solenoid valves, liquid solenoid valves, miniature solenoid valves, pulse solenoid valves, hydraulic solenoid valves, normally open solenoid valves, oil solenoid valves, DC solenoid valves, high-pressure solenoid valves, explosion-proof solenoid valves, etc.

2. Solenoid valves can be divided into three main categories based on material:

1) Stainless steel solenoid valves: These are the most common type of solenoid valve. Stainless steel is popular due to its high quality and stable operation.

*This series of products is widely used in textiles, printing, chemicals, plastics, rubber, pharmaceuticals, food, building materials, machinery, electrical appliances, surface treatment, and other production and research departments, as well as in everyday facilities such as bathrooms, canteens, and air conditioning systems.

2) Brass solenoid valves: Some users with less demanding requirements may choose brass solenoid valves. These valves are relatively inexpensive and suitable for ordinary working environments.

*This series of products is generally suitable for media such as liquids, water, gas, hot water, oil, and methane.

3) Plastic Solenoid Valves: In some special workplaces and with special media, such as acidic or alkaline environments, brass and stainless steel solenoid valves are easily corroded. Therefore, plastic solenoid valves made of special materials (engineering plastics PVC, CPVC, UPVC, ABS, or PTFE, etc.) have particularly excellent corrosion resistance.

* This series of products is suitable for drinking water, various untreated sewage, rainwater, seawater, and various acid, alkali, and salt solutions, organic solvents, etc.

2. Solenoid valves can be divided into on/off solenoid valves and proportional solenoid valves according to their function.

1) On/off solenoid valves: These valves function as switches; when current flows, the solenoid valve controls the opening and closing of the circuit or oil circuit.

2) Proportional solenoid valves: The output pressure varies depending on the input current. Changing the input current changes the output pressure of the solenoid valve. They are mostly used in hydraulic systems.

Commonly Used ROSS Solenoid Valves (USA):

771B2001 2772B2001

2771B3001 2772B3001

2771B4011 2772B4011

2771B4001 2772B4001

2771B5001 2772B5001

2771B6011 2772B6011

2771B6001 2772B6001

2771B7001 2772B7001

2771B8011 2772B8011

2771B8001 2772B8001

2771B9001 2772B9001 2771B90112772B9011

2773B20012774B2001

2773B30012774B3001

2773B40012774B4001

2773B50012774B5011

2773B60112774B6011

2773B60012774B6001

2773B70012774B7001

2773B80112774B8011

2773B80012774B8001

2773B90012774B9001

2773B90112774B9011 The company mainly deals with European and American brands and can source brands from any European country. For example, our key 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