Numatics solenoid valve 081SA400M000061 is in stock.

Brand

NUMATICS/USA

Flow Direction

Other

3C Valve Category

Industry

Application Areas

Medical, Chemical, Petroleum, Energy, Comprehensive

NUMATICS Solenoid Valve 081SA400M000061 in Stock

Main Classifications of Numatics Solenoid Valves;

1. Solenoid valves are classified into three main categories based on their operating principle:

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 operate normally under vacuum, negative pressure, and zero pressure, but the nominal diameter is generally no more than 25mm.

2) Step-by-Step Direct-acting Solenoid Valve:

Principle: It combines the principles of direct-acting and pilot-operated valves. When there is no pressure difference between the inlet and outlet, after 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. This pressure difference pushes 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 the pressure in the upper chamber to drop rapidly, creating a pressure difference around the closing element (higher at the bottom and lower at the top). The fluid pressure pushes the closing element upwards, opening the valve. When de-energized, the spring force closes the pilot orifice, and the inlet pressure quickly creates a pressure difference around the closing element through the bypass orifice, causing the fluid pressure to push the closing element downwards, closing the valve.

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

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 are 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.

Numatics Solenoid Valve Selection Considerations

Numatics Solenoid Valve Selection Criteria

The selection of Numatics solenoid valves should first follow the four principles of safety, reliability, applicability, and economy. Secondly, it should be based on six aspects of the on-site operating conditions (i.e., pipeline parameters, fluid parameters, pressure parameters, electrical parameters, actuation method, and special requirements).

Numatics Solenoid Valve Selection Criteria:

1. Selection of Solenoid Valves Based on Pipeline Parameters: Nominal Diameter (DN), Connection Type

1) Determine the nominal diameter (DN) based on the inner diameter of the pipeline or flow requirements.

2) Connection type: Generally, flange connections are required for DN > 50; for DN ≤ 50, the choice is flexible based on user needs.

2. Selection of Solenoid Valves Based on Fluid Parameters: Material, 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 for diameters greater than DN 25, which must be clearly distinguished.

4) Fluid Viscosity: Generally, any choice is acceptable below 50 cSt; if this value is exceeded, a high-viscosity solenoid valve should be selected. 3. Selecting Solenoid Valves Based on Pressure Parameters: Principle and Structure

1) Nominal Pressure: This parameter has the same meaning as other general-purpose valves, 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 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 and DC24V voltage specifications should be prioritized for convenience.

5. Selecting Based on Continuous Working Time: Normally Closed, Normally Open, or Continuously Energized

1) When the solenoid valve needs to be open for a long time, and the continuous time is longer than the closing time, a normally open type should be selected.

2) If the opening time is short or the opening and closing times are infrequent, a normally closed type should be selected.

3) However, for some safety protection applications, such as furnace and kiln flame monitoring, normally open valves cannot be selected; a continuously energized type should be chosen. 6. Select auxiliary functions according to environmental requirements: explosion-proof, check valve, manual operation, waterproof mist, water spray, and submersible.

The Numatics solenoid valve has a sealed chamber with through holes at different positions, each connecting to a different oil pipe. In the center 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. Controlling the movement of the valve body opens or closes different drain holes. 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 moves the piston rod, which in turn drives the mechanical device. Thus, controlling the current to the electromagnets controls the mechanical movement.

A malfunction of the Numatics solenoid valve will directly affect the operation of the switching valve and the regulating valve. A common malfunction is that the solenoid valve does not operate. The following troubleshooting steps should be taken:

1. Loose or detached wiring of the Numatics solenoid valve. The solenoid valve will not be energized. Tighten the wiring.

2. If the solenoid valve coil is burnt out, disconnect the solenoid valve wiring and use a multimeter to measure. If an open circuit is found, the solenoid valve coil is burnt out. Causes include moisture in the coil causing 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 too few coil turns and insufficient suction can also cause the coil to burn out. In an emergency, the manual button on the coil can be switched from the normal "0" position to the "1" position to open the valve.

3. If the solenoid valve is stuck: The clearance between the solenoid valve spool and the 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, it is easy for the valve to get stuck. A temporary fix 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. When disassembling, 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 oil mist lubricator nozzle is clogged 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 handle it when the solenoid valve is de-energized. If the problem cannot be resolved within a single switching interval, pause the switching system and handle it at a later time.

Common Applications of Numatics Solenoid Valves:

Numatics solenoid valves use a single solenoid coil to generate magnetic attraction that overcomes spring pressure, actuating the valve core. They are simple in structure, inexpensive, and only perform on/off control.

1. Numatics Solenoid Valve: Used for on/off control of liquid and gas pipelines, it is a two-position DO control. Generally used for small pipelines.

2. Numatics Solenoid Valve: Can only be used as an on/off quantity, it is a DO control and can only be used for small pipelines, commonly found in pipelines of DN50 and below, rarely larger.

Differences between Numatics solenoid valves and electric valves:

Differences between electric valves and solenoid valves:

Numatics solenoid valves use an electromagnetic coil to generate magnetic attraction, overcoming spring pressure to actuate the valve core. They consist of a single electromagnetic coil, are simple in structure and inexpensive, and can only perform on/off functions.

Electric valves use an electric motor to drive the valve stem, which in turn actuates the valve core. Electric valves are further divided into shut-off valves and regulating valves. Shut-off valves operate in two positions, either fully open or fully closed. Regulating valves have an electric valve positioner installed, using closed-loop regulation to dynamically stabilize the valve in a specific position.

1. On/Off Type:

Numatics solenoid valves are driven by a coil and can only open or close, with a short on/off action time.

Electric valves are generally driven by a motor, requiring a certain amount of time to complete the opening or closing action, and can be used for regulation.

Numatics solenoid valves are electromagnetically controlled industrial devices, fundamental components of automation systems used to control fluids. They are actuators, not limited to hydraulic or pneumatic systems. They are 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; commonly used types include check valves, safety valves, directional control valves, and speed control valves.

Product Advantages:

Our company primarily deals in European and American brands, and can source brands from any European country. For example, our key German brands include: FESTO, BURKERT, BOSCH-REXROTH, IFM, TURCK, P+F, BALLUFF, SICK, HIRSCHMAN, MURR, HYDAC, GSR, CROUZET, E+H, PILZ, HAWE, SIEMENS, STAUFF, EUCHNER, EMG, UNIVER, ATOS, NORGREN, and approximately 500 other brands of varying sizes from other European countries. We have cooperative relationships with approximately 500 other European brands.

We also have companies in the US, and we cooperate with approximately 200 brands, including ASCO, Vickers, MAC, Parker, MOOG, Fairchild, Denison, Ross, UE, MTS, and GEFRAN.

We have distribution rights for Japanese brands, such as CKD, TOYOOKI, NACHI, DAIKIN, SMC, KOGANEI, TACO, NOK, and TOKIMEC.