Diaphragm Valve
Diaphragm Valve - Related Videos
07:12
Diagnostic Ultrasound Imaging of Mouse Diaphragm Function
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Cited by 7 •
2014
Diagnostic ultrasound imaging has proven to be effective in diagnosing various respiratory diseases in human and animal subjects. We demonstrate a comprehensive ultrasound protocol utilized by Dr. Zuo's lab to analyze diaphragm kinetics specifically in mouse models. This is also a non-invasive research technique which can provide quantitative information on mouse respiratory muscle function.
05:51
Measuring Diaphragm Thickness and Function Using Point-of-Care Ultrasound
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Cited by 9 •
2023
Diaphragm thickness and function can be assessed in healthy individuals and critically ill patients using point-of-care ultrasound. This technique offers an accurate, reproducible, feasible, and well-tolerated method for evaluating diaphragm structure and function.
08:47
Culturing Mouse Cardiac Valves in the Miniature Tissue Culture System
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Cited by 9 •
2015
Here, we present an ex vivo flow model in which murine cardiac valves can be cultured allowing the study of the biology of the valve.
09:43
Functional and Morphological Assessment of Diaphragm Innervation by Phrenic Motor Neurons
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Cited by 16 •
2015
Compound muscle action potential recording quantitatively assesses functional diaphragm innervation by phrenic motor neurons. Whole-mount diaphragm immunohistochemistry assesses morphological innervation at individual neuromuscular junctions. The goal of this protocol is to demonstrate how these two powerful methodologies can be used in various rodent models of spinal cord disease.
05:47
Isolation of Mouse Interstitial Valve Cells to Study the Calcification of the Aortic Valve In Vitro
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Cited by 8 •
2021
This article describes the isolation of mouse aortic valve cells by a two-step collagenase procedure. Isolated mouse valve cells are important for performing different assays, such as this in vitro calcification assay, and for investigating the molecular pathways leading to aortic valve mineralization.
FAQs
An actuator or handwheel controls the diaphragm valve by moving the flexible membrane toward the valve seat or weir. As the membrane changes the available passage area, the device can regulate flow progressively or close the passage for isolation. This operating arrangement lets the mechanism control fluid movement without exposing the operating components directly to the process fluid.
Flow regulation depends on how far the membrane is moved toward the seat or weir. A partially changed passage area supports control rather than simple open-or-closed operation, while movement into the closing position provides isolation. This makes the valve useful where engineers need both adjustment of fluid movement and dependable shutoff from the same device.
Separating the operating mechanism from the process fluid is central to the valve's sealing behavior. The diaphragm forms the intervening boundary, so the mechanism does not sit in the flowing medium. That arrangement helps reduce leakage paths and limits opportunities for product contamination, which is especially relevant when fluid purity or sanitary operation matters.
Material selection sets the usable pressure and temperature range. The diaphragm and valve body must be considered together because their materials determine the limits of service. Engineers should therefore match construction to the process conditions rather than assume that every diaphragm valve can tolerate the same environment. This is important for corrosive fluids and chemical-processing duties.
Diaphragm valves are especially appropriate when reliable sealing and contamination control are priorities. Important application areas include chemical processing, pharmaceutical manufacturing, water treatment, and sanitary systems. Their separated operating mechanism also supports service where keeping the process fluid isolated from valve actuation components is valuable.
During use, an operator or actuator changes the diaphragm position, which changes the opening through the valve. The resulting passage area determines whether fluid is being regulated or isolated. After the membrane moves against the seat or weir, the valve can provide tight shutoff. This sequence connects the control input directly to the flow outcome.
Handling characteristics also influence suitability. The device can be used with corrosive, viscous, or particulate-containing fluids, extending its relevance beyond clean, low-viscosity streams. However, those capabilities do not remove material constraints: the diaphragm and body still establish pressure and temperature limits. Engineers must evaluate both fluid character and service conditions before selection.