ATOS solenoid valve DHI-0715/FI/NC-X in stock

Brand

ATOS/Italian Atos

Flow Direction

Other

3C Valve Category

Industry

Application Areas

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

ATOS Piston Pumps, ATOS Gear Pumps, ATOS Axial Piston Pumps, ATOS Vane Pumps, ATOS Hydraulic Cylinders, ATOS Relief Valves, ATOS Proportional Valves, ATOS Stack Valves

ATOS 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 the flow to pass through the valve body or be cut off, thereby changing the flow direction. The electromagnetic components of the solenoid valve consist of a stationary 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 2-way and 2-position 3-way valves. The term "two positions" refers to energized and de-energized states for a solenoid valve, and open and closed states for the valve it controls. When current flows through the coil, it generates an excitation effect, attracting the moving iron core to the fixed iron core. The moving iron core then drives the spool valve core and compresses the spring, changing the position of the spool valve core and thus changing the direction of the fluid. When the coil is de-energized, the spring force pushes the spool valve core back, causing the fluid to flow in its original direction.

Common ATOS solenoid valve malfunctions include the solenoid valve not operating. Troubleshooting should be done in the following ways:

(1) The solenoid N terminal is loose or the wire is detached. The solenoid valve will not be energized. Tighten the wire. (2) If the solenoid valve coil is burnt out, disconnect the solenoid valve wiring and measure with a multimeter. If it is open-circuited, the solenoid valve coil is burnt out. This can be caused by the coil being subjected to heat, 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 too few coil turns and insufficient suction can also cause the coil to burn out.

(3) If the solenoid valve is stuck, the clearance between the valve sleeve and the valve core is very small. When mechanical impurities are introduced or the valve body is rusted, it can easily become stuck. The fundamental solution is to disassemble the solenoid valve, remove the N 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 position of the external wiring to ensure correct reassembly and wiring. (5) If it is a pilot-operated solenoid valve, check if the differential pressure in the pipeline is too small. If the differential pressure is too small, the solenoid valve will not work properly. In this case, a direct-acting solenoid valve should be selected. If the differential pressure is too large, far exceeding the design value of the solenoid valve N, it will also not work properly. In this case, a high-performance solenoid valve should be used.

(6) If dirt in the pipeline blocks the small hole of the pilot valve, the pilot valve cannot open properly, and the main valve cannot open in time. The valve body can be disassembled, the dirt cleaned, and reassembled to work properly.

(7) In addition, solenoid valves are generally installed horizontally. If they are side-mounted, it may cause the valve to not close tightly, i.e., internal leakage. Side-mounting should be avoided as much as possible.

Common faults of ATOS solenoid valves: An ATOS solenoid valve consists of an electromagnetic coil and a magnetic core, and a valve body 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 direction of fluid flow. The electromagnetic components of a 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.

ATOS solenoid valves contain a sealed chamber with through-holes at different locations, each connecting to a different oil pipe. Inside the chamber is a piston, flanked by two electromagnets. When the coil of one electromagnet is energized, the valve body is attracted to that side, opening or closing different drain holes by controlling the valve body's movement. 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.

The selection of ATOS 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). 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

DHI-0714/WP-X 230/50/60AC

DHI-0714/WP-X 230/50/60AC 23 /PE

DHI-0714-X 230/50/60AC

DHI-0714-X 24DC

DHI-0715/FI/NC-X 24DC

DHI-0715-X 24DC

DHI-0716-X 24DC

DHI-0717-X 24DC

DHI-0718-X 230/50/60AC

DHI-0718-X 24DC

DHI-0750/2-X 24DC

DHI-0751/2/FI/NC-X 24DC 23

DHI-0751/2/FI/NO-X 24DC 23

DHI-0751/2/WP-X 230/50/60AC

DHI-0751/2/WP-X 230/50/60AC 23/PE

DHI-0751/2/WP-X 24DC

DHI-0751/2-X 110/50/60AC 23

DHI-0751/2-X 230/50/60AC

DHI-0751/2-X 24DC

DHO-0630/2/A-X 24DC 20

DHO-0631/2/A-X 24DC 20

DHO-0631/2/L1-X 24DC 20

DHO-0631/2-X 24DC

DHO-0639/O-X 24DC 20

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

DKI-1631/2-X 24DC

DKI-1632/2/AFI/NC-X 24DC 24

ATOS Solenoid Valve Selection Criteria:

1. Selecting the solenoid valve 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 on site;

2) Connection type: Generally, >DN50 requires a flange connection, ≤DN50 can be freely selected according to user needs.

2. Selecting the solenoid valve 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 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 a solenoid valve based on pressure parameters: Principle and structural type

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 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, a normally open type cannot be selected; a continuously energized type should be chosen.

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

Selection Principles (Folded Edit Section)

Applicability:

1. Medium Characteristics

1) Different types of solenoid valves should be selected for gaseous, liquid, or mixed states.

2) Different specifications should be used for different medium temperatures; otherwise, the coil will burn out, the seals will age, and the lifespan will be severely affected. 3) The viscosity of the medium should typically be below 50 cSt. If it exceeds this value, a multi-functional solenoid valve should be used if the pipe diameter is greater than 15 mm; a high-viscosity solenoid valve should be used if the pipe diameter is less than 15 mm.

4) When the cleanliness of the medium is not high, a backwash filter valve should be installed before the solenoid valve. For low pressure, a direct-acting diaphragm solenoid valve can be selected.

5) If the medium flows in a directional manner and backflow is not allowed, a bidirectional flow valve is required.

6) The medium temperature should be selected within the allowable range of the solenoid valve.