A subsidiary of Emerson Electric Co., ASCO is a pioneering American manufacturer specializing in fluid control and pneumatic automation solutions. Founded in 1888 and acquired by Emerson in 1985, the company invented the first solenoid valve in 1910. Its product portfolio includes over 3,000 standard and 20,000 custom-designed valves, renowned for precision in controlling air, gas, steam, and corrosive fluids across industries like oil & gas, healthcare, and power generation. With global operations spanning 30+ factories and 60+ service centers, ASCO leverages over a century of expertise to deliver reliable, high-performance solutions for critical applications.

Product Overview

The ​ASCO 553 Series​ (also known as 8553) is a premium line of 1/2" 3-way and 4-way compact solenoid spool valves designed for precise control of air and inert gases in demanding industrial environments. These valves combine robust construction with advanced sealing technology to deliver reliable performance in challenging applications.

Key Features

• ​Spool Valve Design​ - Precision spool mechanism for smooth operation and long service life

• ​Advanced Sealing​ - Combination of hard T-seals and flexible O-rings for bubble-tight shutoff

• ​Multi-Material Construction​ - Available in anodized aluminum, brass, and stainless steel bodies

• ​Compact Design​ - Space-saving configuration for easy integration

• ​High Cycle Life​ - Engineered for multi-million cycle reliability

• ​Corrosion Resistance​ - Suitable for harsh chemical environments

• ​Dirt Resistance​ - Robust design prevents contamination issues

Technical Specifications

Applications

The ASCO 553 Series is ideal for:

• ​Chemical Processing​ - Corrosive environment fluid control

• ​Refining Operations​ - Petrochemical applications

• ​Food & Beverage​ - Sanitary processing equipment

• ​Life Sciences​ - Pharmaceutical and biotech manufacturing

• ​Industrial Automation​ - Pneumatic system control

• ​HVAC Systems​ - Heating and cooling applications

• ​Water Treatment​ - Purification and filtration systems

Available Configurations

• ​3-Way Valves​ - Single solenoid, normally closed or normally open

• ​4-Way Valves​ - Double solenoid for directional control

• ​Voltage Options​ | Multiple AC/DC voltage configurations available

• ​Enclosure Types​ | Standard, watertight, and explosion-proof options

• ​Connections​ | 1/2" NPT, 1/2" BSPP, and other port configurations

• ​Material Options​ | Aluminum, brass, or stainless steel bodies

Design Advantages

• ​Bubble-Tight Sealing​ - Combination seal technology prevents leakage

• ​Dirt Resistance​ - Protected design maintains performance in contaminated environments

• ​Long Service Life​ - Engineered for millions of cycles with minimal maintenance

• ​Quick Response​ - Fast actuation times for precise control

• ​Easy Maintenance​ - Simple design allows for quick service and part replacement

• ​Universal Mounting​ - Multiple mounting options for flexible installation

Certifications & Compliance

• ​Industry Standards​ | Meets relevant industrial valve standards

• ​Material Certifications​ | Complies with industry-specific material requirements

• ​Electrical Safety​ | Designed to meet electrical safety standards

• ​Explosion-Proof Options​ | Available for hazardous location applications

Why Choose ASCO 553 Series?

• ​Proven Reliability​ - ASCO's reputation for quality and durability

• ​Versatile Application​ - Suitable for wide range of industrial uses

• ​Superior Sealing​ - Advanced seal technology ensures leak-free operation

• ​Material Flexibility​ - Multiple body materials for different environment needs

• ​Global Support​ - Backed by Emerson's worldwide service network

• ​Technical Expertise​ - Engineering support for application-specific solutions

Installation & Maintenance

• ​Mounting​ | Multiple mounting positions supported

• ​Piping​ | Standard 1/2" connections with various port types

• ​Electrical​ | Standard industrial electrical connections

• ​Maintenance​ | Periodic inspection of seals and moving parts recommended

• ​Filter Recommendation​ | Pre-filtration recommended for extended service life

Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL and EMERSON to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.