Pilot-operated solenoid valve ICO4-PST

3/2-wayhydraulicair

Overview
The IMI Maxseal ICO4-PST is a high-integrity, explosion-proof smart solenoid valve with integrated Partial Stroke Testing (PST) for safety-critical installations in hazardous areas. Suitable for pneumatic and hydraulic supply media, it is engineered for fail-safe operation with SIL 3 capability and is intended for offshore, oil & gas and power generation applications. The valve body is 316L stainless steel for corrosion resistance and long service life. Local or remote operation via DCS is supported; hydraulic and pneumatic actuation options available.

Key features

• Explosion-proof design — ATEX, IECEx and FM approvals
• SIL 3 capable with integrated Partial Stroke Testing (PST)
• Available in hydraulic and pneumatic actuation versions
• High flow performance with low electrical power consumption
• Remote (DCS) or local operation
• 316L stainless steel construction for corrosive environments
• Ingress protection: IP66/IP67; NEMA 4x
• Port size options: 0.25 in to 0.75 in
• Port thread options: ISO G and NPT
• Seal material options: NBR or FKM
• Operating ranges: hydraulic up to 414 bar (6004 psi); pneumatic up to 20 bar (290 psi)
• Voltage: 24V DC
• Power consumption: 5.7 to 17.3 W

Description
The ICO4-PST integrates Partial Stroke Testing to allow periodic verification of emergency shutdown valve function without a full stroke, reducing process disruption while maintaining safety integrity. Certified for hazardous areas, the valve meets stringent safety requirements for critical applications. Typical supply media include pneumatic, low-pressure hydraulic and process fluids. The device is configured as a 3/2 universal valve suitable for certified explosion-proof installations requiring high-integrity components.

Technical specifications

• Ambient temperature (°C): -40 to 50
• Seal material: NBR; FKM
• Body material: 316L stainless steel
• Port size (in): 0.25 to 0.75
• Port options: ISO G; NPT
• Operating pressure (bar): 0 to 10 (control); actuation hydraulic up to 414 bar
• Supply medium: Pneumatic; Low-pressure hydraulic; Process media
• Configuration: 3/2 universal
• Power consumption (W): 5.7 to 17.3
• Voltage: 24V DC
• Certifications: ATEX; IECEx; SIL2; SIL3; Ex EAC; NEMA 4x; IP66