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ASCO EF8551A005MS Explosion Proof Three-Way Pilot-Operated Solenoid Valve with Manual Override
- Regular price
- $349.00
- Sale price
- $349.00
- Regular price
-
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Product Description P/N: EF8551A005MS
Description
The ASCO EF8551A005MS is a pilot-operated three-way normally closed solenoid valve designed for reliable control of air and inert gas in industrial automation systems. Featuring an explosion-proof solenoid enclosure and a sustained manual operator, this valve provides dependable directional control for pneumatic actuators operating in hazardous locations. Its compact direct-mount design supports efficient installation in process control and valve automation applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | ASCO |
| Category | Valves |
| Part Number | EF8551A005MS |
| Subcategory | Solenoid Valve |
| Series | 8551 |
| Valve Type | Pilot-Operated Spool Solenoid Valve |
| Valve Function | Three-Way Two-Position Normally Closed |
| Port Size | 1/4 Inch National Pipe Thread |
| Mounting Style | NAMUR Direct Mount |
| Valve Actuation | Pilot Operated |
| Operating Media | Air, Inert Gas |
| Body Material | Aluminum |
| Enclosure Type | Explosion Proof |
| Manual Operator | Sustained Screw Type (MS) |
| Coil Voltage | 120 Volts Direct Current |
| Flow Coefficient (Cv) | 0.86 |
| Operating Pressure Range | 30 to 150 Pounds per Square Inch |
| Weight | 1.00 lbs |
Information About EF8551A005MS
The EF8551A005MS is part of the ASCO Series 8551 family of pilot-operated spool valves engineered for pneumatic control of single-acting and double-acting actuators. It incorporates a three-way, two-position normally closed configuration with one-quarter inch National Pipe Thread ports, an explosion-proof enclosure, and a sustained manual override identified by the "MS" suffix. The valve is designed for direct mounting to NAMUR actuators and is suitable for compressed air and inert gas service in industrial environments. Its robust construction and standardized mounting arrangement make it widely used in chemical processing, oil and gas, power generation, and automated manufacturing systems.
Key Features:
- Three-Way Normally Closed Operation: Controls pneumatic flow for spring-return actuator applications.
- Explosion-Proof Enclosure: Suitable for hazardous industrial environments requiring protected electrical components.
- One-Quarter Inch National Pipe Thread Ports: Compatible with standard pneumatic piping installations.
- Pilot-Operated Spool Valve: Provides smooth and reliable directional control using pilot pressure.
- Sustained Manual Override: Allows manual valve operation during maintenance or electrical power loss.
- Direct NAMUR Mounting: Simplifies installation on quarter-turn pneumatic actuators.
- Air and Inert Gas Service: Designed specifically for clean pneumatic media.
- Durable Industrial Construction: Built for continuous operation in demanding automation systems.
The EF8551A005MS delivers the reliability and precision required for pneumatic actuator control and hazardous location automation applications.
Description
The ASCO EF8551A005MS is a pilot-operated three-way normally closed solenoid valve designed for reliable control of air and inert gas in industrial automation systems. Featuring an explosion-proof solenoid enclosure and a sustained manual operator, this valve provides dependable directional control for pneumatic actuators operating in hazardous locations. Its compact direct-mount design supports efficient installation in process control and valve automation applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | ASCO |
| Category | Valves |
| Part Number | EF8551A005MS |
| Subcategory | Solenoid Valve |
| Series | 8551 |
| Valve Type | Pilot-Operated Spool Solenoid Valve |
| Valve Function | Three-Way Two-Position Normally Closed |
| Port Size | 1/4 Inch National Pipe Thread |
| Mounting Style | NAMUR Direct Mount |
| Valve Actuation | Pilot Operated |
| Operating Media | Air, Inert Gas |
| Body Material | Aluminum |
| Enclosure Type | Explosion Proof |
| Manual Operator | Sustained Screw Type (MS) |
| Coil Voltage | 120 Volts Direct Current |
| Flow Coefficient (Cv) | 0.86 |
| Operating Pressure Range | 30 to 150 Pounds per Square Inch |
| Weight | 1.00 lbs |
Information About EF8551A005MS
The EF8551A005MS is part of the ASCO Series 8551 family of pilot-operated spool valves engineered for pneumatic control of single-acting and double-acting actuators. It incorporates a three-way, two-position normally closed configuration with one-quarter inch National Pipe Thread ports, an explosion-proof enclosure, and a sustained manual override identified by the "MS" suffix. The valve is designed for direct mounting to NAMUR actuators and is suitable for compressed air and inert gas service in industrial environments. Its robust construction and standardized mounting arrangement make it widely used in chemical processing, oil and gas, power generation, and automated manufacturing systems.
Key Features:
- Three-Way Normally Closed Operation: Controls pneumatic flow for spring-return actuator applications.
- Explosion-Proof Enclosure: Suitable for hazardous industrial environments requiring protected electrical components.
- One-Quarter Inch National Pipe Thread Ports: Compatible with standard pneumatic piping installations.
- Pilot-Operated Spool Valve: Provides smooth and reliable directional control using pilot pressure.
- Sustained Manual Override: Allows manual valve operation during maintenance or electrical power loss.
- Direct NAMUR Mounting: Simplifies installation on quarter-turn pneumatic actuators.
- Air and Inert Gas Service: Designed specifically for clean pneumatic media.
- Durable Industrial Construction: Built for continuous operation in demanding automation systems.
The EF8551A005MS delivers the reliability and precision required for pneumatic actuator control and hazardous location automation applications.
