ISO 5599-1 Valves by Automatic Valve

Key Features and Design Advantages

ISO 5599-1 valves from Automatic Valve incorporate several engineering features that ensure reliable, long-life performance. The spool design is highly tolerant of contaminated air, reducing the sensitivity to particulate ingress that can plague other valve technologies. The spool is also self-compensating for wear, maintaining consistent performance characteristics over extended service life without the need for frequent maintenance or adjustment.

Mounting options include individual sub-base mounting and manifold base mounting, providing flexibility for both standalone valve installations and multi-valve assemblies. The pilot operation provides high shifting force with low power consumption, optimizing energy efficiency in automated systems. Internal or external pilot supply is selected automatically, simplifying commissioning and reducing the potential for installation errors.

The external pilot supply makes these valves suitable for vacuum service applications where the main supply pressure may be insufficient for reliable pilot operation. The bidirectional tapered Tee-Seal eliminates sticking problems and has been validated through 20-million-cycle testing with rust and water injection per SAE specifications. A turn-locking manual override enables operators to manually position the valve during maintenance or commissioning.

Specifications and Operating Conditions

Automatic Valve ISO 5599-1 valves are engineered for reliable operation across a broad range of environmental conditions. Standard temperature models operate from 0 degrees F to 123 degrees F (-18 degrees C to 50 degrees C), while high temperature models extend to 0 degrees F to 180 degrees F (-18 degrees C to 82 degrees C). For temperatures below 40 degrees F, air must be free of water vapor to prevent ice formation. The flow media is filtered air.

Operating pressure varies by ISO size and valve function. Size 1 (I15) and Size 2 (I20) 5/2 valves operate from 20 to 150 psig (1.4 to 10.3 bar), while Size 3 (I45) 5/2 valves operate from 30 to 150 psig (2.1 to 10.3 bar). The 5/3 valves require slightly higher minimum pressures depending on size and center position configuration. External pilot supply pressure ranges from 35 to 150 psig for most configurations.

Solenoid options include DC voltages of 12V and 24V with power consumption as low as 2.5 watts, and AC options at 120V and 240V at 60 Hz. Electrical connections include DIN EN 175301-803 Form B connectors, M12 connectors, and molded coils with 18-inch flying leads. Manifold connection threads are available in NPT and G configurations. Construction materials include aluminum valve bodies with Buna-N or Fluoroelastomer seal options.

ISO Sizes and Valve Functions

The ISO 5599-1 valve range from Automatic Valve covers three standardized sizes, each optimized for a specific flow capacity range. ISO Size 1 (I15 series) offers Cv 1.0 (980 Nl/min) with manifold inlet port sizes of 1/8, 1/4, and 3/8 inch. ISO Size 2 (I20 series) delivers Cv 2.0 (2,000 Nl/min) with 3/8 and 1/2 inch manifold inlet ports. ISO Size 3 (I45 series) provides Cv 4.0 (3,900 Nl/min) with 1/2 and 3/4 inch ports.

The 5/2 valve function provides five-way, two-position directional control for double-acting actuators and cylinders. Available with single or double solenoid actuation, these valves offer left pilot, right pilot, or double pilot configurations. The 5/3 valve function delivers five-way, three-position control with closed center, open center, or power center configurations, maintaining a stable center position when de-energized for fail-safe positioning.

Both solenoid pilot controlled and pressure controlled versions are available across all three ISO sizes. Pressure controlled valves use pneumatic pilot signals instead of electrical actuation, providing an alternative for applications where electrical control is not available or not desired. All valve functions are available in standard and high temperature variants.

Sub-Bases, Manifolds, and Mounting Systems

The ISO 5599-1 mounting standard provides a universally interchangeable base interface, and Automatic Valve offers a complete range of sub-bases and manifold systems to support every installation configuration. Individual sub-bases provide standalone mounting for single valve applications, with threaded port connections in NPT or G thread configurations sized to match each ISO valve size.

Manifold bases consolidate multiple ISO 5599-1 valves into a single integrated assembly, reducing piping, minimizing leak points, and simplifying installation. Manifold bases are available in various station counts and can be configured with end stations that provide supply and exhaust connections for the entire assembly. Manifold accessories include blanking plates for unused stations, intermediate supply plates, and connection adapters.

All sub-bases and manifold components conform to the ISO 5599-1 dimensional standard, ensuring interchangeability with valves from any manufacturer that adheres to the same specification. This standards-based approach provides engineers with sourcing flexibility and protects capital investment in base infrastructure. Downloadable CAD models for all valve and base configurations support efficient plant design and engineering workflows.

Accessories and Electrical Options

Automatic Valve provides a full range of accessories for ISO 5599-1 valve installations. Electrical connectors include DIN EN 175301-803 Form A and Form B configurations with and without indicator lights, M12 connectors, and prewired cable assemblies with 6-foot cord lengths. Lighted connector options provide visual indication of solenoid status for easier troubleshooting and system monitoring.

High-flow exhaust silencers are available in zinc-plated steel and stainless steel with port sizes matched to each ISO valve size. These silencers reduce audible noise from valve exhaust ports while maintaining adequate flow capacity to prevent backpressure-related performance degradation. Exhaust restrictor silencers combine noise reduction with additional exhaust flow regulation.

The ISO 5599-1 standard's emphasis on interchangeability extends to the accessory ecosystem, where standardized interfaces ensure compatibility across multiple manufacturers. Automatic Valve's engineering team provides application support through its Ferndale, Michigan headquarters and the ROSS Global Family's worldwide network, assisting with valve selection, system design, and custom configuration requirements.

Frequently Asked Questions About ISO 5599-1 Valves

What is the ISO 5599-1 standard and why does it matter?

ISO 5599-1 is an international standard that defines the mounting interface dimensions for pneumatic directional control valves. Valves and sub-bases manufactured to this standard are interchangeable regardless of manufacturer, protecting capital investment in base infrastructure and providing sourcing flexibility. Automatic Valve ISO 5599-1 valves conform fully to this standard in Size 1, 2, and 3 configurations.

What flow capacities are available for ISO 5599-1 valves?

Automatic Valve ISO 5599-1 valves are available in three sizes with increasing flow capacity. ISO Size 1 (I15 series) provides Cv 1.0 (980 Nl/min), ISO Size 2 (I20 series) delivers Cv 2.0 (2,000 Nl/min), and ISO Size 3 (I45 series) offers Cv 4.0 (3,900 Nl/min). Manifold inlet port sizes range from 1/8 inch to 3/4 inch across the three sizes.

Are ISO 5599-1 valves available in pressure controlled versions?

Yes, Automatic Valve ISO 5599-1 valves are available in both solenoid pilot controlled and pressure controlled configurations across all three ISO sizes. Pressure controlled versions use pneumatic pilot signals for actuation and offer the same flow capacity, temperature ratings, and mounting interface as their solenoid counterparts.

What SIL rating do ISO 5599-1 valves achieve?

Automatic Valve ISO 5599-1 valves are certified by SGS-TUV Saar per IEC 61508. They achieve Safety Integrity Level 2 (SIL 2) in singular application with hardware fault tolerance of 0, and SIL 3 with Performance Level e in redundant application with hardware fault tolerance of 1 or greater.

Can ISO 5599-1 valves be used in high temperature applications?

Yes, Automatic Valve offers high temperature versions of ISO 5599-1 valves rated from 0 degrees F to 180 degrees F (-18 degrees C to 82 degrees C). Standard temperature models operate from 0 degrees F to 123 degrees F (-18 degrees C to 50 degrees C). Both versions are available across all three ISO sizes and both solenoid and pressure controlled actuation types.