Control Specialties is an authorized ASCO distributor, offering the complete range of ASCO solenoid valves, including the industry-standard ASCO Red Hat series, for 2-way, 3-way, and 4-way configurations.
We offer valves for air, water, gas, oil, and steam across every major industrial application. All products are genuine ASCO valves backed by the manufacturer's warranty and supported by our in-house technical team.
Need help selecting the right ASCO valve?
An ASCO solenoid valve is an electromechanical device that controls the flow of fluid, including air, water, gas, oil, or steam, through a pipeline by using a coil and plunger mechanism. When electrical current energizes the coil, it generates a magnetic field that moves the plunger to open or close the valve orifice.
ASCO (Emerson) manufactures some of the most widely trusted industrial solenoid valves, offering direct-acting and pilot-operated designs for a wide range of pressure and flow requirements.
Simple on/off control with one inlet and one outlet. The valve opens when energized and closes when de-energized, making it ideal for starting or stopping flow.
Use Case: Controlling compressed air in pneumatic tools and actuators.
Used to switch flow between ports (divert) or combine flow paths, depending on configuration. Energizing the valve switches the flow path, making it suitable for single-acting actuators.
Use Case: Piloting pneumatic cylinders in packaging lines.
Enable bi-directional control by alternating flow between two ports. Ideal for operating double-acting cylinders efficiently.
Use Case: Used in robotic systems, assembly fixtures, and presses.
Zone Temperature Control.
2-way and 3-way ASCO valves regulate chilled and hot-water flow in AHUs and fan-coil units. Integrated with BMS, they maintain consistent zone temperatures, optimize energy usage, and ensure precise thermal comfort with minimal pressure loss.
Pipeline and Wellhead Control.
ASCO valves with stainless steel bodies and Viton seals handle high-pressure hydrocarbons safely. Explosion-proof coils ensure compliance in hazardous areas, while fail-safe configurations provide automatic shutdowns. These configurations improve operational safety in upstream and midstream environments.
Chemical Dosing and Filtration.
EPDM sealed ASCO valves manage chlorinated water and dosing chemicals in treatment plants. Their corrosion-resistant design ensures durability, while automated control supports precise chemical injection and efficient filtration cycles in continuous duty municipal and industrial systems.
High-Cycle Pneumatic Actuation.
4-way ASCO valves power pneumatic cylinders in automation systems, supporting tasks like clamping and pressing. Built for high-cycle operations, they integrate with PLCs for precise control, improving productivity and reliability across fast-paced manufacturing environments.
Choose 2-way for on/off flow control, 3-way for diverting or mixing, and 4-way for double-acting actuator control.
Direct-Acting Valves work without a minimum pressure and suit low-flow and low-pressure applications.
Pilot-Operated Valves use line pressure to assist opening, better for high-flow systems where a smaller coil is preferred.
Match the valve's rated operating pressure to your system's minimum and maximum working pressure. Pilot-operated valves require a minimum differential pressure to function.
ASCO valves are available in AC (120V, 240V) and DC (12V, 24V) coil options. Confirm coil voltage matches your control panel or PLC output.
Brass suits most water, air, and gas applications. Stainless steel is required for corrosive media, hygienic processes, or high-temperature service.
Not sure which model fits your system? Our solenoid valve selection guide on choosing the right solenoid valve helps you make informed decisions.
Get in touch with our team for expert assistance and a quick and accurate quote tailored to your needs.
We’ll help you select the perfect valve.
A solenoid valve works by converting electrical energy into mechanical movement. When voltage is applied to the coil, it creates a magnetic field that pulls the plunger up, opening the valve orifice and allowing media to flow.
When de-energized, a spring returns the plunger to its resting (normally open or normally closed) position.
The correct ASCO valve depends on your media, pressure, port configuration, and electrical supply. For simple on/off air or water control, the ASCO 8551 direct-mount valve is a strong starting point.
For diverting or mixing, consider the ASCO 8327 3-way valve. Contact our team for application-specific guidance.
A 2-way valve has one inlet and one outlet; it simply opens or closes a single flow path. A 3-way valve has three ports and can divert flow between two outlets or mix flow from two inlets. Use 2-way valves for basic on/off control and 3-way valves for cylinder piloting or flow diversion.
A Normally Closed (NC) valve is shut when de-energized and opens when powered, the most common and safe-by-default configuration. A Normally Open (NO) valve is open when de-energized and closes when powered, used in systems where flow must continue if power is lost.
Choose the fail-state that keeps your process safe during a power outage.
The ASCO Red Hat valves are ASCO's most recognized product line, identifiable by their signature red coil housing.
Red Hat valves are known for long service life, low power consumption, and availability across 2-way, 3-way, and 4-way configurations in both direct-acting and pilot-operated designs. They are available for air, water, gas, oil, and steam media.
Select NBR for standard water, air, and petroleum-based media. Use EPDM for hot water, steam, or chlorinated water applications. Go for FKM (Viton) when handling hydrocarbons, solvents, or chemicals, or when operating at elevated temperatures.
Selecting the wrong seal material is one of the most common causes of premature valve failure.
A solenoid valve uses an electromagnetic coil for fast On/Off control, it’s ideal for automation. A motorized valve uses an electric motor for slower, precise flow regulation, making it suitable for throttling and applications requiring gradual opening and closing.
