O'Keefe Controls Co. Datasheets for Flow Orifices and Flow Restrictors

Flow orifices and flow restrictors contain precision-machined holes and filters or screens to restrict flow and reduce pressure. They are available as stand-alone devices and in kits, assemblies, restrictors, and restrictor valves.
Flow Orifices and Flow Restrictors: Learn more

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Product Name Notes
For research and development of products requiring flow metering, it is convenient to have an accurate array of precision orifices. The kits described on this page provide a wide range...
One-piece construction of solid metal is employed. Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to .063" orifice diameter. Special sizes can...
Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to as large as .035" orifice diameter. Special sizes can be made to order.
Precision orifice assemblies that adapt to common fittings used in process instruments and hydraulic systems are shown.
The restrictors incorporate a precision synthetic sapphire orifice which is fitted within a main body. The sapphire orifice is a stable, accurate flow restrictor. Standard sizes range from .0012" to...
Orifices are accurately machined, thoroughly cleaned, and flow tested to exacting standards. Sizes range from .004" to as large as .063" orifice diameter dependent on fitting geometry. Special sizes can...
For research and development of products requiring flow metering, it is convenient to have an accurate array of precision orifices. The kits described on this page provide a wide range...
Precision orifice assemblies that adapt to common fittings used in process instruments and hydraulic systems.
The Precision Micro-Orifices® are constructed of brass or stainless steel with orifice sizes from .0003" to .005" diameter. The orifices are used to accurately meter very low flow rates of...

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