Atos solenoid valve DHE-0639/O in stock

Brand

ATOS/Italian Atos

Flow Direction

Other

3C Valve Category

Industry

Application Areas

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

ATOS Vane Pumps, ATOS Piston Pumps, ATOS Gear Pumps, ATOS Hydraulic Cylinders

ATOS Solenoid Valve Selection Principles:

Safety:

1. Corrosive Media: Plastic King Solenoid Valves and All-Stainless Steel Valves are Recommended; For Strongly Corrosive Media, Diaphragm Type Valves Must Be Selected. For Neutral Media, Solenoid Valves with Copper Alloy Valve Shells are Also Recommended; Otherwise, Rust Shavings Often Fell from the Valve Shell, Especially in Infrequent Operations. Copper Valves Cannot Be Used for Ammonia.

2. Explosive Atmospheres: Products with Appropriate Explosion-Proof Ratings Must Be Selected. For Outdoor Installations or Dust-Rich Environments, Waterproof and Dustproof Models Should Be Selected.

3. The Nominal Pressure of the Solenoid Valve Should Exceed the Maximum Working Pressure in the Pipeline. Atos 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. Common types include check valves, safety valves, directional control valves, and speed control valves.

Main Classifications of Atos Solenoid Valves

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

1) Direct-acting solenoid valves:

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

Characteristics: 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-Action Solenoid Valve:

Atos 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, opening the valve. When the inlet and outlet reach the starting pressure difference, upon energization, the electromagnetic force actuates the pilot valve, increasing the pressure in the lower chamber of the main valve and decreasing the pressure in the upper chamber, thus using the pressure difference to push the main valve open. 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:

Atos solenoid valve principle: When energized, 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 lower pressure at the top and higher pressure at the bottom. The fluid pressure pushes the closing element upward, opening the valve. When de-energized, spring force closes the pilot orifice. The inlet pressure quickly creates a pressure differential around the closing element through the bypass orifice, with lower pressure at the bottom and higher pressure at the top. The fluid pressure pushes the closing element downward, closing the valve.

Atos solenoid valve features: High upper limit of fluid pressure range; can be installed arbitrarily (customization required), but must meet fluid pressure differential conditions.

2. Solenoid valves are divided into six subcategories based on differences in valve structure, materials, and operating principles: 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.

Atos Solenoid Valve Selection Considerations:

Atos Solenoid Valve Selection Basis

The selection of solenoid valves should first follow four principles in order: 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).

Atos Solenoid Valve Selection Basis:

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

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

2) For the connection type, generally, >DN50 requires a flange connection, while ≤DN50 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; when the minimum working pressure difference is 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 are preferred for ease of use.

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

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 continuously powered type should be chosen.

6. Selection of Auxiliary Functions Based on Environmental Requirements: Explosion-proof, Check Valve, Manual Operation, Water-resistant Fog, Water Spray, Submersible.

DHO-0710-X 24DC 20

DHO-0711-X 24DC

DHO-0713-X 24DC 20

DHO-07191-X 24DC

DHO-0750/2-X 24DC 20

DHRZO-P5-012/25 20

DHU-0610/A-X 24DC 20

DHU-0610/FI/NC-X 24DC 20

DHU-0610-X 24DC 20

DHU-0610-X 48DC 20

DHU-0611-X 24DC

DHU-0614/A-X 24DC 20

DHU-0614-X 24DC 20

DHU-06191-X 24DC 20 DHU-06194-X 24DC 20

DHU-0630/2/A-X 24DC

DHU-0630/2-X 24DC

DHU-0631/2/A-X 24DC

DHU-0631/2/FC-X 24DC 20

DHU-0631/2-X 24DC

DHU-0632/2/A-X 24DC 20

DHU-0632/2-X 24DC 20

DHU-0639/C-X 24DC 20

DHU-0671-X 24DC

DHU-0710/L1-X 24DC 20

DHU-0710-X 24DC

DHU-0711/WP-X 24DC 20

DHU-07119-X 24DC 20

DHU-0711-X 24DC

DHU-0713/1-X 24DC

DHU-0713/WP-X 24DC 20

DHU-0713P-X 24DC 20

DHU-0713-X 24DC

DHU-07149-X 24DC 20

DHU-0714-X 24DC

DHU-0718-X 24DC

DHU-0750/2/FI/NC-X 24DC 20

DHU-0750/2-X 24DC

DHU-0751/2-00 20 /WG

DHU-0751/2P-X 24DC 20

DHU-0751/2-X 24DC

DHU-6751/2P-X 24DC DKI-1610/A-X 24DC 24

DKI-1610-X 24DC

DKI-1611-X 24DC

DKI-1612/A-X 230/50/60AC 24

DKI-1612-X 24DC 24

DKI-1613/A-X 24DC 24

DKI-1613-X 24DC 24

DKI-1618-X 24DC 24

DKI-1630/2/A-X 24DC 24

DKI-1630/2-X 24DC

DKI-1631/2/A-X 24DC 24

DKI-1631/2/WP 24DC

DKI-1631/2/WP-X 230/50/60AC 24 DKI-1631/2-X 230/50/60AC 24

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, AVENTICS, HYDAC, PILZ relays, FESTO, IFM door 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