Categories from ASCO (31)

Solenoid valves provide fast, reliable on/off control of water, air, gas, oil, steam and chemicals using an electrical signal. They automate filling, dispensing, cooling, cleaning and safety shutoff in countless machines and systems.

Solenoid Valve Types

• 2-way valves – simple open/close flow control
• 3-way and 4-way valves – divert flow or operate actuators
• Direct-acting valves – work from zero pressure
• Pilot-operated valves – larger flows at line pressure
• Specialty valves – steam, fuel gas, cryogenic and proportional

Choosing a Solenoid Valve

Confirm the media, pressure range (including minimum pressure differential), temperature, port size and Cv. Choose body and seal materials compatible with the fluid, and select a coil voltage and enclosure rating for the location. Normally closed or normally open depends on the fail-safe state you need.

Centro carries solenoid valves for water, air, steam, gas and process applications.

Related categories: Valves | Sampling Valves | Plumbing Valves | Plug Valves | Sanitary Valves

Pilot valves are critical for operating larger valves or control actuators in fluid control systems. These valves act as control mechanisms, receiving signals from external devices such as sensors, controllers, or other valves and initiating the opening or closing of the main valve or actuator. Pilot valves are commonly used in applications where high-pressure fluids or significant flow rates are involved, such as hydraulic systems, pneumatic systems, and industrial machinery. They provide reliable and precise control, ensuring efficient operation and safety. With various configurations and actuation methods available, including solenoid-operated, manual, or pilot-operated, pilot valves offer versatility and flexibility to meet specific system requirements.

Related categories: Valves | Proportional Valves | Microfluidic Valves | Pneumatic Control Valves | Hot Water and Steam Valves

Fuel, gas and oil valves control and shut off flow to burners, boilers, engines and fuel systems. Safety-approved valves protect people and equipment.

Valve Types

• Safety shutoff solenoid valves – burner trains
• Fuel oil solenoid valves – oil burners
• Gas ball valves – manual isolation
• Motorized gas valves – slow-opening control

Choosing a Valve

Select by fuel type, pressure, size and required approvals (UL, FM, CSA). Burner trains must meet applicable codes.

Centro supplies fuel, gas and oil valves for combustion systems.

Related categories: Valves | Butterfly Valves | Flow Control Valves | Temperature Control Valves | Directional Control Valves

Hot Water and Steam Valves are essential components designed to control and regulate the flow of hot water and steam in various applications. These valves are specifically engineered to withstand high temperatures and pressures, ensuring reliable operation in heating systems, steam boilers, industrial processes, and other applications requiring hot water or steam control. With durable materials and robust construction, these valves provide precise control and help maintain system efficiency and safety. Hot Water and Steam Valves are widely used in industries such as HVAC, power generation, manufacturing, and commercial buildings where reliable and efficient hot water and steam management is crucial.

Related categories: Valves | Microfluidic Valves | Angle Seat Valves | Pilot Valves | Plug Valves

Valve repair kits and parts are essential components used to maintain and repair valves in fluid control systems. These kits typically include seals, gaskets, o-rings, springs, and other necessary parts needed to restore or replace worn or damaged elements of a valve. Valve repair kits and parts enable the repair and refurbishment of valves, extending their lifespan and ensuring proper functioning. By using these kits, operators can quickly and cost-effectively address valve issues without requiring complete valve replacement. These kits are available for different types and sizes of valves, allowing for specific repairs tailored to the valve's design and requirements. Valve repair kits and parts are essential for industries such as manufacturing, petrochemicals, water treatment, and HVAC, where reliable valve performance is crucial.

Related categories: Valves | Drain Valves | Gate Valves | Globe Valves | Valve Accessories

Cryogenic valves are designed to operate in extremely low-temperature environments, typically below -150°C (-238°F). These valves are engineered with materials and components that can withstand the challenges posed by cryogenic conditions, such as thermal contraction and brittleness. They are essential for safely and efficiently controlling cryogenic fluids like liquid nitrogen, oxygen, or liquefied natural gas (LNG). Cryogenic valves are built to minimize heat transfer and prevent the freezing of internal components, ensuring reliable performance and preventing leaks. They find applications in aerospace, medical, energy, and research, where precise and secure control of cryogenic fluids is crucial. These valves are designed to maintain safety, reliability, and efficiency in low-temperature environments.

Related categories: Valves | Valve Positioners | Needle Valves | Directional Control Valves | Check Valves

Valve accessories add control, feedback and protection to valves. Actuators, positioners, limit switches, handles and locking devices make valves easier and safer to run.

Accessories Available

• Actuators – pneumatic and electric automation
• Positioners – modulating control
• Limit switches – position feedback
• Gear operators and handwheels – manual operation
• Locking devices and extensions – safety and access

Choosing Accessories

Match valve type, size and mounting standard (ISO 5211). Choose environmental ratings for the installation.

Centro supplies valve accessories and automation packages.

Related categories: Valves | Gate Valves | Ball Valves | Valve Repair Kits & Parts | Gauge Cock Valves

Microfluidic valves are miniature valves specifically designed for controlling and manipulating small volumes of fluids at the microscale level. These valves play a crucial role in microfluidic systems, used in various fields such as biomedical research, pharmaceuticals, chemical analysis, and diagnostics. Microfluidic valves enable precise and automated fluid flow control, allowing for the accurate routing, mixing, and metering of fluids on a micro scale. They are typically made from materials compatible with biological samples and can be actuated using pneumatic, mechanical, or electrostatic methods. These valves offer high accuracy, low dead volume, and fast response times, making them ideal for applications requiring precise fluid handling at small scales.

Related categories: Valves | Pilot Valves | Hot Water and Steam Valves | Proportional Valves | Angle Seat Valves

Pulse valves are specialized valves used in pulse-jet dust collection systems commonly found in industrial settings. These valves are specifically designed to provide efficient and reliable cleaning of dust collector filter bags or cartridges. Pulse valves release short bursts or pulses of compressed air into the filter bags, creating a shockwave that dislodges accumulated dust particles, allowing them to fall into the collection hopper. This cleaning process helps maintain the effectiveness and longevity of the filtration system. Pulse valves are known for their rapid response, high flow capacity, and durability in demanding environments. They are widely used in manufacturing, mining, and energy industries, where effective dust control is essential for maintaining air quality and preventing equipment damage.

Related categories: Valves | Repair Valves | Diaphragm Valves | Relief Valves and Vacuum Breakers | Pressure Reducing Valves

Angle seat valves, also known as angle valves or angle-seat piston valves, are versatile and reliable devices used in fluid control systems. These valves feature a unique design with a 90-degree angle between the inlet and outlet ports, allowing for efficient flow control and excellent sealing capabilities. The valve body typically houses a piston that can be pneumatic or electric in response to the actuator. This movement controls the flow of the fluid, allowing precise regulation and shut-off. Angle seat valves are widely used in applications requiring accurate control of liquids or gases, such as industrial processes, water treatment systems, and HVAC systems. They are known for their durability, high flow capacity, and contaminant resistance, making them a popular choice in various industries.

Related categories: Valves | Hot Water and Steam Valves | Plug Valves | Microfluidic Valves | Sampling Valves

Proportional valves are advanced control valves that provide precise and proportional control over fluid flow rates or pressures. These valves are designed to accurately regulate the flow or pressure of liquids or gases in various industrial applications. Proportional valves offer the ability to adjust the valve opening or position in proportion to an input signal, typically an electrical or analog signal. This allows for fine-tuned control and modulation of the flow or pressure, enabling precise adjustments based on system requirements. Proportional valves are commonly used in automation, robotics, process control, and hydraulic systems, where precise and dynamic control is essential for optimal performance.

Related categories: Valves | Pneumatic Control Valves | Pilot Valves | Pneumatic Safety Valves | Microfluidic Valves

Flow control valves are essential devices used in fluid control systems to regulate the flow rate within a pipeline or system. These valves allow for precise adjustment of flow rates, ensuring optimal performance and efficiency. By controlling the opening or closing of the valve or by using throttling mechanisms, flow control valves can increase or decrease the flow rate as desired. This enables operators to maintain stable flow conditions, prevent fluid overload, and achieve accurate flow control for various applications. Flow control valves are commonly used in manufacturing, oil and gas, water treatment, and HVAC systems, where precise flow management is critical for operational success.

Related categories: Valves | Fuel, Gas, and Oil Valves | Directional Control Valves | Butterfly Valves | Valve Positioners

Filter regulator combos combine the functions of air filtration and pressure regulation into a single unit, offering a compact and space-saving solution for compressed air systems. These combos feature integrated filters and regulators, allowing users to remove contaminants and control pressure in a streamlined manner. By combining these two functions, filter regulator combos simplify installation, reduce piping, and minimize pressure drop. They provide efficient and reliable air treatment, ensuring clean and regulated air supply to pneumatic equipment and systems. Filter regulator combos are commonly used in applications where space is limited or when a compact air preparation unit is required.

Related categories: Air Preparation | Air Preparation Miscellaneous Products | Lubricators | Air Preparation Repair Kits | Regulators

Pneumatic control valves are essential components used in pneumatic systems to regulate and control the flow of compressed air or gas. These valves are crucial in various industrial applications, including automation, manufacturing, and process control. Pneumatic control valves are designed to receive signals from pneumatic controllers or other control devices, allowing for precise airflow, pressure, and direction adjustment. By opening or closing specific ports or channels, these valves enable the efficient control of pneumatic actuators, such as cylinders or motors. They offer fast response times, high repeatability, and reliable operation, making them ideal for applications requiring precise and dynamic control of pneumatic systems.

Related categories: Valves | Pneumatic Safety Valves | Proportional Valves | Gauge Cock Valves | Pilot Valves

Pneumatic directional control valves are pivotal components within pneumatic systems, responsible for determining the path of compressed air flow and subsequently controlling the movement of actuators. These valves govern the direction in which air travels, enabling the activation and deactivation of pneumatic cylinders or other actuators that perform mechanical tasks. With the ability to switch between multiple ports, pneumatic directional control valves facilitate intricate automation processes, allowing machinery to execute precise movements and sequences. Whether in manufacturing lines, robotics, or other industrial settings, these valves are indispensable for achieving efficient and accurate motion control, contributing to enhanced productivity and streamlined operations.

Shop by type: Manifold Assembly Kit | Regulators | Directional Control Valves | Solenoid Coils | Special Purpose Valves | ISO Valves | Ceram Valves | Valves Parts and Kits

Related categories: Pneumatic and Electronic Controls | HMIs | Electric Power Tools | Pneumatic Check Valves | Pneumatic Accessories

Pneumatic accessories connect, protect and fine-tune compressed air systems. Fittings, tubing, check valves, flow controls and filters may be small parts, but they have a big effect on machine performance, air consumption and reliability.

Pneumatic Accessories

• Pneumatic fittings and tubing – push-to-connect, compression and barbed
• Check and flow control valves – control direction and speed
• In-line filters – point-of-use protection for valves and actuators
• Air volume tanks – supply surges for high-demand cycles
• Air valve switches and relief valves – sensing and overpressure protection

Choosing Accessories

Match tube size and material (polyurethane, nylon, PTFE) to pressure, flexibility and chemical exposure. Use flow controls to set cylinder speed. Fixing small leaks in fittings and tubing is one of the easiest ways to cut compressed air costs.

Centro carries pneumatic accessories to build, maintain and improve air systems.

Shop by type: In-Line Filters | Check Valves and Flow Valves | Pneumatic Fittings | Tubing | Air Volume Tanks | Air Valve Switches | Pneumatic Relief Valves | Tubing Components

Related categories: Pneumatic and Electronic Controls | Software | Pneumatic Check Valves | Pneumatic Cylinders and Actuators | Electric Power Tools

Directional control valves are the backbone of hydraulic and pneumatic systems, managing the flow and direction of fluids to keep operations running smoothly. Whether you need to move a hydraulic cylinder, power a motor, or automate a system, these valves help direct fluid where it needs to go. They are essential in manufacturing, construction, and automation, ensuring precision and efficiency in fluid-powered equipment.

What Types of Directional Control Valves Are Available?

We offer a variety of directional control valves to fit different system needs:

• Solenoid-operated valves – Use electrical signals for fast and automated fluid control.
• Manual directional valves – Controlled by hand levers or push buttons for simple, direct operation.
• Pilot-operated valves – Utilize hydraulic or pneumatic pressure to control larger fluid flows with minimal effort.
• Spool valves – Efficiently switch fluid paths to direct flow as needed.

How to Choose the Right Directional Control Valve

Finding the right directional control valve depends on several key factors:

• System pressure and flow rate – Ensuring the valve can handle your application’s demands.
• Control method – Deciding between manual, electric, hydraulic, or pneumatic operation.
• Number of ports and positions – Matching the valve configuration to your system’s needs.
• Application type – Whether it's for industrial automation, mobile machinery, or other fluid-powered equipment.

Why Buy Directional Control Valves from us?

• We carry a wide selection of high-quality directional control valves.
• Our valves are built for reliable performance in demanding applications.
• We offer expert guidance to help you find the right solution.
• Our pricing is competitive, with products from trusted manufacturers.

If you need a directional control valve that keeps your system running efficiently, we’ve got you covered. Browse our selection online or contact our team for expert advice.

Related categories: Valves | Flow Control Valves | Valve Positioners | Fuel, Gas, and Oil Valves | Cryogenic Valves

Electrical connectors make secure, serviceable connections for power, signal and data. Quality connectors reduce failures and make equipment faster to install and maintain.

Connector Types

• Terminal blocks – DIN rail wiring
• Heavy-duty industrial connectors – modular power and signal
• Circular connectors – M8, M12 and M23
• Pin-and-sleeve devices – portable power
• Wire connectors and lugs – splices and terminations

Choosing Connectors

Match current, voltage, wire size and environment. Choose IP-rated connectors for washdown and outdoor use. Coding prevents wrong connections.

Centro supplies connectors for panels and machines.

Related categories: Electrical Accessories | Networking | Thermal Management | Drag Chains | Control Lighting

Compressed air filters remove dirt, rust, water and oil from air lines, protecting valves, cylinders, tools and products. Clean air reduces wear and failures and is critical for painting, food and instrument applications.

Filter Types

• General purpose particulate filters – 5 to 40 micron elements
• Coalescing filters – remove oil aerosols and fine particles
• Activated carbon filters – remove oil vapor and odor
• Manual and automatic drains – discharge collected liquid
• Modular units – combine with regulators and lubricators

Choosing a Filter

Size the filter to the flow rate and select element grade based on the air quality needed. Place a particulate filter before a coalescer. Change elements when pressure drop rises or on a schedule.

Centro carries compressed air filters and replacement elements from leading pneumatic brands.

Related categories: Air Preparation | Regulators | Strainers | Lubricators | Filter/Regulators Combo

FRLs (filter, regulator and lubricator units) condition compressed air at the point of use. They remove contaminants, set the correct pressure and add lubrication for pneumatic tools and components.

FRL Options

• Combination FRL units – three functions in one assembly
• Filter/regulators – space-saving two-in-one
• Modular units – build custom air prep assemblies
• Accessories – gauges, brackets, shutoff valves and drains
• Metal and polycarbonate bowls – match pressure and environment

Choosing an FRL

Size the unit for peak air flow and select filter micron and regulator range. Skip the lubricator if components are pre-lubricated or air must be oil-free. Metal bowls are required in some environments.

Centro carries FRL units and parts for compressed air systems.

Related categories: Compressed Air | Piping | Filter Vessel Assemblies | Dryers | Drains

Check and flow valves optimized for pneumatics are indispensable components within pneumatic systems, ensuring controlled and efficient fluid movement in various applications. Check valves permit air flow in one direction while preventing backflow maintaining pressure and system integrity. Flow control valves regulate the rate of airflow, enabling precise adjustments to pneumatic actuator speed and force. Engineered for accuracy and reliability, these valves are crucial in industries like automation, manufacturing, and robotics. Check and flow valves tailored for pneumatics contribute significantly to smooth operation, preventing pressure loss, and optimizing system performance. With diverse sizes and configurations, these valves offer tailored solutions for achieving precise and efficient pneumatic control in various industrial settings.

Related categories: Pneumatic Accessories | Pneumatic Fittings | In-Line Filters | Tubing | Air Volume Tanks

Air regulators are devices used to control and maintain a consistent and adjustable pressure level in compressed air systems. They are essential for optimizing the performance of pneumatic tools, actuators, and other air-powered equipment. Air regulators monitor the incoming air pressure and regulate it to a desired setpoint, ensuring reliable and consistent operation. They provide precise control over the air pressure, allowing users to adjust and maintain the optimal pressure for specific applications. Air regulators are available in various configurations, including relieving and non-relieving types, with features like pressure gauges and lockout options, offering flexibility and functionality for different pneumatic systems.

Related categories: Air Preparation | Lubricators | Filters | Filter/Regulators Combo | Strainers

Mufflers, silencers and speed controls fine-tune pneumatic systems by cutting exhaust noise and setting actuator speed.

Products Available

• Sintered bronze mufflers – compact exhaust silencing
• Plastic silencers – high noise reduction
• Speed control mufflers – adjust exhaust flow
• Inline flow controls – meter in or out
• Banjo flow controls – mount at cylinder ports

Choosing Products

Match thread and flow size, and use meter-out speed control for most cylinder applications.

Centro supplies mufflers, silencers and speed controls.

Related categories: Pneumatic Accessories | Shutoff Valves | Exhaust Valves | Tubing Components | Pneumatic Relief Valves

Air preparation conditions compressed air before it reaches valves, cylinders and tools. Removing contamination, controlling pressure and adding lubrication where needed extends component life and keeps pneumatic equipment running reliably.

Air Preparation Products

• Filters – particulate and coalescing filtration
• Regulators – maintain steady downstream pressure
• Lubricators – add oil mist for lubricated components
• Filter/regulator combos and FRL units – space-saving modular assemblies
• Strainers, accessories and repair kits – protect and maintain units

Building an Air Prep Unit

Size units to the machine's peak air flow, not just port size. Install filters first, then the regulator, then a lubricator if required. Add shutoff and soft-start valves for safety, and drain filters regularly or use auto drains.

Centro carries air preparation components from leading pneumatic brands.

Shop by type: Strainers | Filters | Regulators | Lubricators | Filter/Regulators Combo | Air Preparation Miscellaneous Products | Air Preparation Repair Kits | Filter/Regulator/Lubricator Combo

Related categories: Automation and Robotics | Robotics | Shock Absorbers | Laser Markers | Aluminum Extrusion

Compressed air filtration and treatment removes dirt, water and oil so your air meets the quality that tools, instruments and products need. Clean, dry air reduces maintenance and protects downstream equipment.

Compressed Air Products

• Filter vessel assemblies – particulate and coalescing filtration
• Dryers – refrigerated and desiccant dryers
• Drains – timed and zero-loss condensate drains
• Oil-water separators – treat condensate for disposal
• FRLs and piping – point-of-use control and distribution
• Parts and accessories – elements, gauges and kits

Designing a System

Define the air quality class you need (ISO 8573-1), then select filtration and drying to match. Size components for peak flow, and use efficient piping to cut pressure drop.

Centro can help you select compressed air treatment products that meet your air quality goals.

Shop by type: Filter Vessel Assemblies | FRL's | Piping | Dryers | Drains | Oil Water Separators | Parts and Accessories | Blowguns

Related categories: Gas Filtration and Separation | Gas Filtering | Oil/Mist Coalescing | Mufflers & Silencers

Exhaust valves quickly vent air from cylinders and pneumatic systems. They speed up cylinder return, allow safe depressurization and support safety circuits.

Exhaust Valve Types

• Quick exhaust valves – faster cylinder movement
• Safety exhaust valves – depressurize on emergency stop
• Lockout exhaust valves – maintenance isolation
• Silenced exhaust – reduce noise

Choosing a Valve

Select port size and flow for the cylinder or system. Mount quick exhaust valves close to the cylinder.

Centro supplies pneumatic exhaust valves.

Related categories: Pneumatic Accessories | Mufflers, Silencers, and Speed Controls | Tubing Components | Shutoff Valves | Pneumatic Relief Valves

Pneumatic tubing is a flexible and durable material that transports compressed air in pneumatic systems. It is designed to withstand the high pressures and dynamic forces of pneumatic applications. Pneumatic tubing is typically made from polyurethane, nylon, or PVC, offering excellent resistance to abrasion, chemicals, and UV radiation. It comes in various sizes and configurations, including different diameters and wall thicknesses, to accommodate different flow requirements. Pneumatic tubing is easy to cut, bend, and route, allowing for efficient installation and customization. With its reliable performance and flexibility, pneumatic tubing ensures the smooth and efficient transfer of compressed air, contributing to the optimal operation of pneumatic systems.

Related categories: Pneumatic Accessories | Air Volume Tanks | Pneumatic Fittings | Air Valve Switches | Check Valves and Flow Valves

Compact and short stroke cylinders deliver pneumatic force where space is tight. They're used for clamping, pressing, stopping and short positioning moves in automated machines.

Cylinder Types

• Compact cylinders – ISO 21287 and short body designs
• Short stroke cylinders – minimal length
• Pancake cylinders – very low profile
• Guided compact cylinders – anti-rotation and side load support

Choosing a Cylinder

Select bore for force, stroke for motion and mounting for available space. Magnetic pistons allow position sensing.

Centro supplies compact and short stroke cylinders.

Related categories: Pneumatic Cylinders and Actuators | Guided Cylinders | Air Bellows | Round Body Cylinders | Rodless Cylinders

Standard electrical enclosures are essential components used to house and protect electrical equipment, controls, and wiring. These enclosures provide a safe and secure environment, shielding sensitive electrical components from environmental factors, such as dust, moisture, and physical damage. Standard electrical enclosures are typically made of durable materials, such as steel or aluminum, and feature a sturdy construction with proper sealing to ensure reliable protection. They come in various sizes, configurations, and mounting options to accommodate different equipment and installation requirements. Standard electrical enclosures are crucial in maintaining the integrity and longevity of electrical systems, ensuring safety and efficient operation in industrial, commercial, and residential applications.

Related categories: Enclosures | Custom Enclosures

Pneumatic fittings are essential components used to connect and secure pneumatic systems, enabling the efficient transfer and control of compressed air. These fittings provide a leak-free and reliable connection between pneumatic components such as hoses, pipes, valves, and actuators. They come in various types, including push-in fittings, quick-connect couplings, threaded fittings, and barbed fittings, offering versatility and compatibility with different system requirements. Pneumatic fittings are designed to withstand high pressures, vibrations, and temperature variations commonly found in pneumatic applications. With their easy installation and disassembly capabilities, pneumatic fittings enable quick and hassle-free maintenance or reconfiguration of pneumatic systems, ensuring smooth and efficient operation.

Shop by type: Flow Control Fittings | Push-Connect Fittings | Quick Connect Fittings

Related categories: Pneumatic Accessories | Tubing | Check Valves and Flow Valves | Air Volume Tanks | In-Line Filters

Pressure switches open or close an electrical contact when pressure reaches a set point. They start and stop pumps and compressors, trigger alarms and shut equipment down when pressure is unsafe.

Pressure Switch Types

• Mechanical switches – simple, reliable and no power needed
• Electronic switches – adjustable set points and displays
• Differential pressure switches – filter and flow monitoring
• Vacuum switches – vacuum system control
• Explosion-proof switches – hazardous areas

Choosing a Switch

Select set point range, deadband, electrical rating and wetted materials. Fixed or adjustable deadband affects cycling. Add snubbers for pulsating systems.

Centro carries pressure switches for pumps, compressors and process safety.

Related categories: Pressure Control | Pressure Transmitters | Gauges | Pressure Regulators | Pressure Control Accessories