ATOS solenoid valve DHA-0711/NPT/724/BT in stock

Brand

ATOS/Italian Atos

Flow Direction

Other

3C Valve Category

Industry

Application Areas

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

ATOS Solenoid Valve DHA-0711/NPT/724/BT in Stock

The ATOS solenoid directional 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. 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 moves the piston rod, which in turn drives the mechanical device. Thus, controlling the current to the electromagnets controls the mechanical movement.

ATOS Selection Criteria:

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

1) Determine the nominal diameter (DN) based on the on-site pipeline inner diameter or flow requirements;

2) Connection type: Generally, for DN > 50, a flange connection should be selected; for DN ≤ 50, the user can choose freely according to their needs.

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

1) Corrosive fluids: Corrosion-resistant solenoid valves and all-stainless steel 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 should be chosen;

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 Structural Types

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 or DC24V voltage specifications should be prioritized for convenience.

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

Explosion-proof, Check Valve, Manual, Water-resistant (Foaming), Water-spraying, Submersible. ATOS Solenoid Valves

1) When the solenoid valve needs to be open for a long time, and the duration 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, a normally open type cannot be selected; a type that can be continuously energized should be chosen.

6. Select auxiliary functions according to environmental requirements: Anti-…

ATOS Solenoid Valve Performance Requirements:

1. Reversing Performance

Under specified operating conditions, can the solenoid valve reliably reverse direction after being energized, and reliably reset after being de-energized?

2. Pressure Loss

The pressure loss of a solenoid directional valve consists of flow loss and throttling loss generated when the liquid flows through the valve port.

3. Internal Leakage

The internal leakage of a solenoid directional valve refers to the leakage from the high-pressure chamber to the low-pressure chamber under specified operating conditions and in various operating positions. 4. Reversing and Reset Time

The time required from the electromagnet being energized to the valve core completing its reversing action. Reset time refers to the time required from the electromagnet being de-energized to the valve core returning to its initial position.

5. Reversing Frequency

The maximum number of reversing actions allowed per unit time.

6. Service Life

A malfunction of the ATOS solenoid valve will directly affect the operation of the switching valve and the regulating valve. Common malfunctions include the solenoid valve not operating. The following aspects should be checked:

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

2. Burned-out solenoid valve coil: Disconnect the solenoid valve wiring and measure with a multimeter. If an open circuit is found, 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 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. Solenoid Valve Jammed: The clearance between the solenoid valve's spool sleeve and valve core is very small (less than 0.008mm), and it is usually assembled as a single piece. When mechanical impurities are introduced or there is insufficient lubricating oil, it is easy to jam. 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. 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 there is sufficient lubricating oil.

4. Air Leakage: Air leakage will cause insufficient air pressure, making it difficult for the forced valve to open and close. This is caused by damaged sealing gaskets or worn spool sleeves, 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 while the 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.

ATOS Solenoid Valve Common Applications (Folded Edit Section)

ATOS solenoid valves utilize the magnetic attraction generated by an energized solenoid coil to overcome spring pressure and actuate the valve core. They consist of a single solenoid coil, are simple in structure, inexpensive, and can only perform on/off control.

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

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

Commonly Used ATOS Solenoid Valve Models:

DHI-0613-X 24DC

DHI-0614-X 24DC

DHI-0616/A-X 230/50/60AC

DHI-0618/A-X 24DC 23

DHI-0630/2/A-X 230/50/60AC 23

DHI-0630/2/A-X 24DC 23

DHI-0630/2-X 24DC

DHI-0631/1/2/A-X 24DC

DHI-0631/2/A-IX 24DC

DHI-0631/2/A-X 110/50/60AC 23

DHI-0631/2/A-X 230/50/60AC 23 DHI-0631/2/P-X 24DC

DHI-0631/2/WP-X 12DC 23

DHI-0631/2/WP-X 220DC 23

DHI-0631/2/WP-X 230/50/60AC

DHI-0631/2P/A-X 24DC

DHI-0631/2P-X 24DC

DHI-0631/2-X 230/50/60AC

DHI-0713-X 110/50/60AC

DHI-0713-X 230/50/60AC

DHI-0713-X 24DC

DHI-0713-X 24DC 23/PE 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. We have partnerships with approximately 200 brands, including: German companies such as Henström, MURR, SCHMERSAL, SAMSON, and EPRO (a subsidiary of Emerson); American companies such as MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, and ROSS; British companies such as Norgren; Italian companies such as OMAL, ATOS, CAMOZZI, UNIVER, and Camozzi; and companies in the US such as ASCO, VICKERS, MAC, PARKER, MOOG, FAIRCHILD, DENISON, ROSS, UE, MTS, and GEFRAN.

We also have companies in the US, such as ASCO, VICKERS, MAC, PARKER, MOOG, FAIRCHILD, DENISON, ROSS, UE, MTS, and GEFRAN. We have the agency rights for Japanese brands, such as CKD, TOYOOKI, NACHI, DAIKIN, SMC, KOGANEI, TACO, NOK, TOKIMEC, and other brands.