Product Overview
The Equa-Check® valve, designed specifically for pneumatics, is a patented Aladco® product. It is the only check valve on the market with both manual and pilot release capabilities. Equa-Check® valves are pilot operated check valves where the pilot pressure is balanced by the IN chamber pressure. Load balancing systems are a type of application that can benefit from the functions of an Equa-Check® valve.
A typical use of an Equa-Check® valve involves combining it with a pressure regulator system to control air flow to and from one port of a tensioning or balancing cylinder. With an appropriate combination of a pressure controller and other pneumatic components, a control system using an Equa-Check® allows two-way flow for normal balancing or tensioning operation and position lock under supply pressure loss, standby or safety stop conditions. A combined valve system can have excellent fail-safe and assured control properties.
Features
- Superior, self-cleaning ball seal provides long product life
- Exceeds ANSI Class VI Leak Standard (bubble tight)
- Body is made of high strength, lightweight, anodized 6061 aluminum alloy (Stainless Steel 303 is optional in some models)
- Variety of porting options
- Designed for use with lubricated or non-lubricated air systems
- Tamper resistant with no required maintenance
- Prevents load drift and provides rapid stopping of load
- Patented and Made in Waukesha, Wisconsin USA
- Standard 3-year warranty
Equa-Check® Pneumatic Check Valve Dimensions
Additional Notes:
- Standard seal is Buna-N (30° to 250°F temperature range); Viton® (-15° to 400°F temperature range) is also an available option
- MTTF is over 100 million cycles for Buna-N seals and over 40 million cycles for Viton® seals
- NPTF Ports conform to ASME B1.20.1-2013 Pipe Threads, General Purpose (Inch)
- BSPP (G) and M5 Ports conform to ISO 16030:2003: Pneumatic fluid power – Connections – Ports and stud ends
- Operating pressure is 15 to 120 psi
- Operating temperature 30° to 150°F
- 10-32 UNF models have only one mounting hole
Disclaimer:
- This valve has not been designed for use on vacuum, air over oil or high pressure applications
- Technical details subject to change without notice
Model Ordering Information
Product Configurator
The U.S. list price displayed is for individual quantities of 1-24. Contact your Aladco® Distributor or Aladco® for volume pricing of 25 or more valves.
Additional information
| Model Type | 40 : Equa-Check Valve – Extended Manual Override, 41 : Equa-Check Valve – Flush Manual Override, 42 : Equa-Check Valve – No Manual Override |
|---|---|
| Inlet-Outlet Port Size | 32 : 10-32 UNF Port, 32 : M5 ISO Metric Port, 12 : 1/8 Port, 25 : 1/4 Port, 38 : 3/8 Port, 50 : 1/2 Port |
| Seal Type | 01 : Buna-N Seals, 02 : Viton Seals |
| Material Body | [blank] : Aluminum, SS : 303 Stainless Steel |
| Thread Class | [blank] : NPTF Thread Class, [blank] : UNF Thread Class, BSPP : G BSPP Thread Class, M5 : ISO Metric Thread Class |
| Optional Suffix | [blank] : No Optional Features, NCP : No Cracking Pressure |
Technical & Application Files
Equa-Check® Information • Equa-Check® Load Balancers • Equa-Check® Full Circuit Diagram • Equa-Check® CAD Files