| 11. | The check valve is not mechanical but hydrophobic in nature.
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| 12. | Most check valves are held in place with a rubber sleeve and hose clamps.
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| 13. | The company also produced Globe Angle Y and Check Valves.
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| 14. | In some ball check valves, the ball is spring-loaded to help keep it shut.
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| 15. | A check valve operates something like a pet door.
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| 16. | A check valve prevents reverse flow between the containers.
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| 17. | The check valve can also jam from the debris.
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| 18. | It consists of two check valves assembled in series.
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| 19. | Check valves are also often used when multiple gases are mixed into one gas stream.
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| 20. | Check valves are often part of common household items.
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