ASCO is the world leader in the design and manufacture of quality solenoid valves. Fluid control products are found in a wide range of demanding industries and thousands of high performance applications throughout the world. You cannot go through a day without being impacted by one of our valves. For instance, while a doctor uses ASCO’s microminiature solenoid valves to keep saline flowing to a patient's eye during microsurgery, some of the worlds largest refineries are using ASCO pilot valves to regulate and control the flow of oil and gas. ASCO’s innovative technology can be found in pulp and paper mills, nuclear power plants, and pharmaceutical manufacturing facilities.

Red Hat · Combustion · Next Generation · Pneumatic · TriPoint

Scientific · Navy & Marine · Nuclear · Systems & Solutions

ASCO Sizing Software (HTML)

ASCO Red Hat offers the world's largest selection of General Purpose, Explosion-Proof & Special Service 2, 3 & 4 way valves to handle virtually any application and the most demanding fluid control applications (Red Hat, Red Hat II, Next Generation).

ASCO Red Hat (HTML) includes:

2-Way General Purpose Valves, 3-Way Inline Valves, 4-Way Inline Valves, NEW S-Series Valves, Angle Body Piston Valves, Dust Collector Valves, Posiflow Proportional Valves, Direct Mount Valves, Direct Mount NAMUR Valves, Bus Technologies, Manual Reset Valves, Intrinsically Safe Valves, IS Piezo Valve Line, Low Power Valves, Timer Drain Valves, Steam Valves, Position Indicators, Red Hat II Coil Data, Safety Instrumented Systems, Systems Solutions, Air Preparation Equipment (FRLs), Oil Shutoff Valves, Oil/Steam/Liquid Control Valves, Oil/Steam/Liquid Safety Shutoff Valves, Gas Vent Valves, Hydramotor Gas Valves, Solenoid Gas Valves, Combustion Valves, and Double Block Valves.

ASCO Next Generation (HTML) includes:

2-Way General Purpose Valves, 3-Way Inline Valves, 4-Way Inline Valves, and Vacuum Valves

ASCO Pneumatic offers Products for OEM, factory automation & MRO requirements including Directional Control Valves (Manifoldable & ISO Std. Configurations), Proportional Valves, Fieldbus Addressable Valve Islands (various bus protocols), NFPA & Eurostandard Actuators, Air Preparation Equipment.

ASCO Pneumatic (HTML) includes:

Solenoid Valves, Solenoid Pilot Valves, Piston Valves, Poppet Valves, Pilot Valves, Modular Interfaces, Mini Spool Valves, ISO Subbases, Micro Solenoid Valves, Air Preparation Equipment (FRLs), NFPA Cylinders, Sentronic Proportional Valves, Mini Piezo Valves, Multipol, and Buslink.

ASCO TriPoint offers Pressure & Temperature Switches for OEM, Industrial & Nuclear applications including Miniature, Compact & Industrial size products.

ASCO TriPoint (HTML) includes:

J-SERIES Miniature Pressure Switches with Non-Adjustable Set Points, H-SERIES Miniature Pressure Switches with Adjustable Set Points, P-SERIES Pressure Switches for Vacuum - 6000 psig with Open Frame, Type 1 or Type 4 Enclosures, S-SERIES Pressure Switches for Vacuum - 8000 psig, Differential or Level with Type 1, Type 4 or Type 7, 9 Enclosures, P-SERIES Temperature Switches for -60 through 510°F with Open Frame, Type 1 or Type 4 Enclosures, and S-SERIES Temperature Switches for -60 through 640° F with Type 1, Type 4 or Type 7, 9 Enclosures.

ASCO Scientific (Angar) offers Miniature Solenoid Valves for the control of liquids and gases including Low Power General Service Valves, Inert Isolation Valves, Pinch Valves, and Customized Manifold Assemblies.

ASCO Scientific (HTML) includes:

Micro Solenoid Valves, Miniature Solenoid Valves, Rocker Isolation Valves, "TFE" Isolation Valves, "Resilient-Seal" Isolation Valves, Pinch Valves, and Valve Manifolds.

ASCO Navy & Marine offers solenoid and air operated valves to meet U.S. Navy and Coast Guard specifications for marine applications. ASCO has many years of experience in supplying valves to meet the exacting standards of the U.S. Navy and Coast Guard. All of the valves listed have been approved for Grade A, Type 1 Hi-Shock requirements per MIL-S-901. The valves described are a sampling of the designs available meeting Navy specifications.

ASCO Navy & Marine (HTML) includes:

2-Way Normally Closed Solenoid Valves for Steam Service, 2-Way Normally Closed Solenoid Valves for Water, Air, Gases & Light Oil, 2-Way Normally Closed Solenoid Valves for Water & Air, 2-Way Solenoid Valves for Refrigeration Service, 3-Way Solenoid Valves for Air Service, 3-Way Manual Reset Valves No Voltage Release, and 4-Way Solenoid & Air Operated Valves

ASCO Nuclear is the pioneer and leader in the design and development of solenoid operated valves for the nuclear industry, ASCO® offers  a complete line of nuclear qualified valves. Our engineering experience and stringent quality standards make every ASCO valve the finest and most complete anywhere in the world. ASCO nuclear products are 100% inspected and functionally tested prior to shipment in order to insure that they meet the rigorous demands and high expectations of the nuclear industry.

ASCO Nuclear (HTML) includes:

Direct Acting Solenoid Valves, Pilot Operated Solenoid Valves, and Pressure & Temperature Switches

ASCO Systems & Solutions (PDF 352kB)

ASCO Redundant Control Systems (PDF 1.1MB)

The Redundant Control System (RCS) is the only pilot valve system that has no single point of failure that could result in an unwanted closure of the process valve. The Redundant Control System is FM certified as fit for use in SIL 3 applications with a spurious trip rate that is lower then Tri-Modular Redundant logic solvers. RCS achieves a higher level of process safety and reliability by using a redundant, fault tolerant architecture, high diagnostic coverage and automated testing. A keyed bypass allows on-line maintenance of the RCS without process interruption. The RCS is available in a variety of constructions that provide valve diagnostics through automated, partial stroke testing. The availability and reliability of RCS make it the most cost effective choice for process valve diagnostics and actuation.

ASCO Valve Monitoring Systems (PDF 1.6MB)

ASCO’s Valve Monitoring Systems (VMS) have revolutionized the concept of position indication by combining the technologies of visual indication and network communications. This catalog contains features, materials of construction, ambient temperatures, electrical information, specifications, ordering information, and dimensional drawings for the VMS line of products. If the information you are looking for is not here please call the contact information provided. All products are available in corrosion resistant low copper aluminum and resin constructions for hazardous environments. All rotary and linear products provide highly visible 360º indication. Patented Viper™ proximity switch uses internal magnet and switching elements resulting in improved set point accuracy and simplifies maintenance.

ASCO Condensate Drain Valves (PDF 1.6MB)

Compressed air is used extensively in manufacturing and other processes to power various pneumatic equipment. When air is compressed, the temperature can typically rise to over 400°F. As the air in the system begins to cool, condensate is formed. This condensate, if not drained properly, will damage equipment and decrease the overall efficiency of your compressed air system. ASCO condensate drain valve assemblies are designed to effectively drain excess condensate from receiver tanks ,pre-filters, separators, air dryers, and drip legs. By utilizing ASCO's proven solenoid and piloted piston valves, condensate drain valve assemblies will enhance the reliability and extend the life of your compressed air system.