Understanding Pressure Capabilities and Limitations in Our Check Valves
We're often asked: "How high can your valves go?" Or, "How low can your valves go?"
To get a better idea about pressure capabilities and limitations in our valves, it's important to know which pressure stage might be most critical to your application's performance. During check valve operation, each valve goes through four different stages of pressure:
• Opening pressure
• Flow (aka steady-state or regulated) pressure
• Check (aka back) pressure
• Resealing pressure
The opening pressure for our valves ranges from 0.09 to 20 PSI. Then, the maximum pressure in the flow direction (inlet) and for the check direction (outlet) can go up to 60+ PSI. Finally, the reseal pressure will always be lower than the selected opening PSI.
Also note, we can adjust a valve's pressure capabilities by looking at the o-ring's durometer (hardness of rubber). For example, if you're looking for higher back pressure performance in our valves, we may recommend o-rings at a higher durometer. For approximate valve burst pressures per a specific check valve Model #, contact a Product & Application Specialist at 1-800-338-0404. Additionally, our engineers consistently test our valves and their components, so if your application requires an opening or flow/check pressure not mentioned here, be sure to inquire with us.
As a custom valve manufacturer, we recommend that you sample the valve that you are interested in and test it in your application. A Product & Application Specialist can help you choose components (body material, o-ring, spring pressure, and more) ideal for your device requirements. The more we know about your low pressure, low flow needs, the better equipped we will be in selecting the right components to create a precise and accurate valve exclusively for your application.
For questions about pressure capabilities and limitations in our valves, please: