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.

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 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.

Functional Safety Solutions

ASCO solenoid pilot valves are an integral part of the final control element for any safety instrumented system (SIS) or critical application. ASCO offers 3 solenoid pilot valve solutions that are widely used in the process control industry; individual 3-way pilot valves, manual reset valves, and redundant pilot valve systems. Each of these solutions are proven in use as a pilot valve in critical applications and in safety instrumented systems. Certified pilot valves per IEC 61508 Parts 1 and 2 are rated SIL 3 capable for domestic and international markets (ATEX). ASCO understands the need to keep your process running, but also understands that the process must shut down when commanded.

ASCO Functional Safety Solutions (1.2MB)

Condensate Drain Valve Assemblies

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.

ASCO Condensate Drain Valves (627kB)

Redundant Control System (RCS)

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 Redundant Control Systems (1.5MB)

Valve Monitoring Systems (VMS)

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 Valve Monitoring Systems (1.6MB)