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551 Solenoid Valve Series
551 Solenoid Valve Series 551 Solenoid Valve Series

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551 Solenoid Valve Series

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The 551 solenoid valve series is designed for controlling compressed air and neutral gases. It supports both single-stable and bistable actuation modes, offering high performance and flexibility in pneumatic automation systems. NAMUR mounting compatibility and reliable switching make it ideal for industrial and explosion-proof applications.
 
  • PLD920S

  • KST&OEM&ODM Brand

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Product Features


▶ Electromagnetic pilot control, available in single and double solenoid configurations.

▶ Integrated modular body with NAMUR interface compatibility.

▶ Convertible between 3/2 or 5/2 ports for single or double-acting actuators.

▶ Equipped with exhaust muffler for silent operation.

▶ Manual override mechanism included as standard.


Technical Specifications


Electrical CharacteristicsElectrical Characteristics
ItemSpecification
Operating Pressure Differential2–10 bar
Max. Allowable Pressure10 bar
Flow Rate700 L/min (ANR at 6 bar)
MediumAir, neutral gases (filtered through a filter)
Temperature Range (TS)-25°C to +60°C
Seal MaterialNBR (Nitrile rubber) + PUR (Polyurethane)
Max. Working Temperature95°C
Max. Ambient Temperature140°C
Spray RadiusMax. 3.0 m
Effective Cleaning RadiusMax. 2.0 m
Port SizeG 1/4"

Electrical Characteristics



| Power Supply | DC: 24V / AC: 24–115–230V, 50Hz |
| Note | Other voltage levels and 60Hz version available upon request |


Model Selection Table



Control TypePower RatingModel (with/without discharge reducing joint)
Single Solenoid (monostable)CM22–2.5WSCQ 551A001 MS / MSM
Double Solenoid (bistable)CM22–2.5WSCQ 551A002 MS / MSM

Applications



  • Pneumatic actuator control with NAMUR interface

  • General industrial automation systems

  • Hazardous/explosion-proof areas

  • Process control in chemical, petroleum, gas industries





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