ASCO Solenoid Valve Selection Criteria

Brand

ASCO/USA

Flow Direction

Other

3C Valve Category

Industry

Application Areas

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

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

ASCO Solenoid Valve Selection Criteria

:

I. Selection of 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, >DN50 requires a flange connection; ≤DN50 can be freely selected according to user needs.

II. Selection of 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: Choose solenoid valves manufactured with high-temperature resistant electrical and sealing materials, and select piston-type valves.

3. Fluid State: Fluids can be gaseous, liquid, or mixed. This distinction is especially important when ordering valves with a diameter greater than DN25.

4. Fluid Viscosity: Generally, any viscosity can be selected below 50 cSt. If it exceeds this value, a high-viscosity solenoid valve must be selected.

III. Selecting Solenoid Valves Based on Pressure Parameters: Principle and Structure

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. For minimum working pressure differentials above 0.04 MPa, direct-acting, step-direct-acting, and pilot-operated valves can all be selected.

IV. Electrical Selection: Prioritize AC220V or DC24V voltage specifications for convenience.

V. Selection 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 exceeds 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.

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

1. Explosive Atmospheres: Solenoid valves with the corresponding explosion-proof rating must be selected (our company currently offers: d II BT4, d II CT5, Ex m I/II T4).

ASCO Solenoid Valve Performance Requirements (USA):

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 caused by fluid flowing through the valve orifice.

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. Switching and Reset Time

The time required from the energization of the solenoid to the termination of the valve core switching. Reset time refers to the time required from the de-energization of the solenoid to the return of the valve core to its initial position.

5. Switching Frequency

The maximum number of switching operations allowed per unit time.

6. Service Life

The service life of a solenoid valve is defined as the number of switching operations it can withstand until major components are damaged, preventing normal switching and reset actions, or until its main performance indicators significantly deteriorate beyond the specified number of switching operations.

Commonly used ASCO solenoid valve models (USA):

EF8551A001MS, SCG551A201, 8551B401, EF8344G370

WSNF8327B112, OFSF8263G206V, NFG353A043, SCG353A051

52100001, 52100004, 52100005, 52000380

12600024, 60562300, 34600137, JBEF8320G174

SCG553A017, SCG551A419, 18900001, NFB327A002

52100008, 52000008, 35500335, 35500333

35500337 35500341 43004886 35500346

35500347 35500338 SCG551A005MS SCG551A017MS

SCG551A018MS SCG551A001MS SCG551A002MS EFG551H401MO

54200001 12600008 NFB370A047 NF8327B112

SCG531B001MS WSNF8551A421 SCB344A074 SC8344A074

SCE370A008MS EFG551G401M0 8215B50 E238A204

SCE238A004 SCXB320A178 EF8316G4 EF8210G4

8342G003 EFG551B401MO EF8316G54 EFG551H401MO

8344B60M0 8355A082 HT8344G44 8210G15

Our company mainly deals in 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