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ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
Specifications
Delivery Time :
6-8 weeks
Model Number :
8327
Price :
USD 70-125 per set
Packaging Details :
Carton/Wooden Case Packaging
Supply Ability :
800 sets per year
Payment Terms :
T/T
Place of Origin :
China
Brand Name :
ASCO
MOQ :
1
Description
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
Product Overview

The ASCO Series 551 is a high-performance line of compact solenoid spool valves designed for the pilot control of pneumatic actuators. Featuring a unique NAMUR interface, these valves are industry standards for reliability and durability in harsh environments. Whether used for single-acting or double-acting actuators, the 551 series provides bubble-tight shutoff and exceptional resistance to dirt and moisture, ensuring long-term operational stability for industrial automation.

Features
  • NAMUR Interface: Direct mounting to pneumatic actuators without extra piping.
  • Convertible Function: Easily switch between 3/2 and 5/2 functions with a single flow plate.
  • Bubble-Tight Shutoff: Unique T-seal and O-ring design ensures zero leakage.
  • Corrosion Resistance: High-quality aluminum or stainless steel body options.
  • Low Power Consumption: Energy-efficient coil designs suitable for continuous duty.
  • Environmental Protection: Available with ATEX/IECEx explosion-proof certifications for hazardous areas.
  • Long Cycle Life: Engineered for millions of cycles under demanding conditions.
Technical Specifications
Attribute Specification
Body Material Anodized Aluminum / 316L Stainless Steel
Port Size 1/4" G or NPT
Function 3/2 NC or 5/2 Convertible
Operating Pressure 2 to 10 Bar (29 to 145 PSI)
Flow Rate (Cv) 0.86 (Standard)
Voltage Options 24VDC, 110VAC, 230VAC (50/60Hz)
Temperature Range -25°C to +60°C (Standard) / -60°C (Arctic version)
Coil Insulation Class H / IP65 Waterproof
Applications
  • Oil and Gas: Control of refinery and pipeline valves.
  • Chemical Processing: Handling corrosive environments and explosive atmospheres.
  • Water Treatment: Automated flow control in filtration and treatment plants.
  • Food and Beverage: Precision control in hygienic automation lines.
  • Power Generation: Reliable pilot control for steam and gas plant actuators.
Frequently Asked Questions
Q: Can I use this valve for both single-acting and double-acting actuators?
A: Yes, the 551 series features a unique flow plate that allows you to convert the valve between 3/2 (single-acting) and 5/2 (double-acting) functions quickly.
Q: Does it come with explosion-proof certifications?
A: Absolutely. We offer various coil options including Ex d (Flameproof), Ex mb (Encapsulated), and Ex ia (Intrinsically Safe) to meet global safety standards.
Q: Is the NAMUR mounting hardware included?
A: Standard packages include the necessary mounting screws and seals for direct attachment to NAMUR actuators.
Related Products
  • ASCO 553 Series: High-flow version with 1/2" port size.
  • Solenoid Replacement Coils: Various voltages and power ratings available.
  • Pneumatic Rotary Actuators: Rack and pinion or scotch yoke designs.
  • Limit Switch Boxes: Mechanical or inductive sensors for position feedback.
Contact Us

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ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems

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Product Detail
Delivery Time :
6-8 weeks
Model Number :
8327
Price :
USD 70-125 per set
Packaging Details :
Carton/Wooden Case Packaging
Supply Ability :
800 sets per year
Payment Terms :
T/T
Contact Supplier
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems

Xiangjing (Shanghai) M&E Technology Co., Ltd

Verified Supplier
8 Years
shanghai, shanghai
Since 2015
Business Type :
Manufacturer, Distributor/Wholesaler, Agent, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Pneumatic Control Valves, Electric Control Valves, Pressure Reducing Valve
Total Annual :
30,000,000-50,000,000
Employee Number :
200~300
Certification Level :
Verified Supplier
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