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

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USD 70-125 per set
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ASCO 551 Series 5 2 Way Pneumatic Solenoid Spool Valve Rotary Actuator Control Industrial Automation Systems
Đặc trưng Bộ sưu tập Mô tả sản phẩm Xếp hạng & Đánh giá Yêu cầu báo giá
Đặc trưng
Thông số kỹ thuật
Thông tin cơ bản
Nguồn gốc: Trung Quốc
Hàng hiệu: ASCO
Số mô hình: 8327
Thanh toán
chi tiết đóng gói: bao bì carton/vỏ gỗ
Thời gian giao hàng: 6-8 tuần
Điều khoản thanh toán: T/T
Khả năng cung cấp: 800 bộ mỗi năm
Mô tả sản phẩm
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
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WeChat / WhatsApp / Phone Number: +86 15116291548

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Annie Dowson
United Kingdom Jan 8.2026
The Emerson AMS Trex we received is top quality – solid build, responsive touchscreen, and works perfectly with our HART and Fieldbus devices. It’s definitely made our commissioning and troubleshooting a lot more efficient. Also, big thanks to the seller – very professional, fast shipping, and they knew exactly what we needed. Super reliable supplier. Would absolutely buy from them again.
Sản phẩm khuyến cáo
Hãy liên lạc với chúng tôi
Người liên hệ : Mr. Edward Zhao
Tel : +8615000725058
Ký tự còn lại(20/3000)