Orifice plates, differential pressure flow measurement equipment, venturi tubes, ASME flow nozzles, restriction unions and more...
Over 50 Years of Differential Pressure Flow Metering Experience...

Email info@LambdaSquare.com   

See All Products
Browse our entire line...
Calibration Services
NIST certified facilities...
Technical Inquiry
Tell us your requirements...
Clients & Applications
Examples of typical installations...

Product information and specifications, company forms, project inquiry.

About Us
Credit Application

About the Oripac Model 5300 Dimension Sheet Tech Support Sheet
Part No. Reference System Specification Sheet Installation Instructions
The ORIPAC is a complete orifice plate flow metering package. It incorporates a stainless steel orifice plate with a unique holder or carrier ring containing metering taps and integral gaskets. Unlike a standard orifice plate, the ORIPAC is a true primary element including the various components for differential pressure measurement. It was designed for use wherever there is an application for a conventional flow orifice plate. It can also be used in place of other primary differential producers for efficiency and cost effectiveness. The ORIPAC was designed and developed by leading authorities in the differential flow measurement field. Standard size units available from stock and customized units are available to meet specific field requirements including flange rating, pipe schedule and differential pressure. Installation is accomplished simply by slipping the self-centering Oripac between standard flanges (orifice flanges are not required). The ORIPAC is available for all line sizes and fluids, and meets or exceeds AMSE, AGA and ISO standards.

MODEL 5300

Material: All Stainless Steel

For Metering Water, Air, Steam
& Corrosive Fluids
High-Pressure Fluids
High-Temperature Fluids

The ORIPAC Model 5300 is used extensively for a wide variety of applications and a diverse industry base.



Unitized stainless steel construction. Simplifies installation - lower installed costs than traditional orifice mounting.
Integrated metering taps properly located and predrilled. Used with standard ANSI flanges - orifice flange unions eliminated. No drilling/tapping pipe.
Full faced integral gasket pre-attached. Precludes potential alignment problems during installation.
Self-centering within standard flanges. Oripac O.D. sits snug within bolt circle of specified flange rating insuring concentricity - centering devices or additional components eliminated.
"Corner" type metering taps. Established coefficient accuracy values.
Stainless steel construction, 304/304 L standard - any grade available - Exotic alloys available. Use or superior high-tech materials eliminating rusting and plugging of sensing ports.
Custom Manufacture (able to meet specific temp and pressure requirements). Standard configurations available from stock, custom units available in different materials, thickness and configuration to meet specific requirements for harsh applications.
Proven through a wide and varied range of applications and installations since 1984. Twenty (20) year history of reliability and accuracy
Sized for specific pipe schedules or special inside pipe diameters including US/Metric, etc. Insures accuracy by eliminating pipe inside diameter to Oripac inside diameter mismatches.
Available with any bore size to produce any specific differential pressure. Ability to match range on an existing d/p transmitter or indicating gage without recalibration or replacement.
Orifice bore calculated to match specified "headloss" requirements. Exact differential pressure values and overall system head loss can be calculated and pre-determined.
Orifice bore styles available include Concentric, Eccentric, Segmental, Quadrant edge, multiple bore. Able to address challenging flow applications including: low viscosity fluids, gasses containing liquids, limited pipe runs, etc.
Removable plate option. Available with set screw or snap ring holder mounting capabilities. Orifice place can be swapped with new bore size plate to match changing flow conditions line sizes 3" + up
Drain hole at bottom or vent hole at top available for orifice plate. Additional tap can be installed for drainage purposes. Steam flow orifices may require a drain at bottom of orifice to allow passage of condensate. Air in liquid lines may require a vent hole at top of orifice.
Bi-directional flow capabilities. Orifice plate available without bevel to accommodate flow in both directions.
Orifice plate thickness option. Thickness of orifice plate provided according to ASME/AGA specs standard. Can be provided with special plate thickness to address high pressure lines,  thick bore "critical flow" requirements, etc.
Available for any flange material or rating (125/150#, 250/300#, 600#, 900#, 1500#, 2500#) DIN Ratings or custom flange requirements. Eliminate potential flange rating mismatches, no need for additional centering devices - ideal for use within lightweight duct flanges.
Ideal for light weight duct measurement. Mounts between thin angle or plate flanges for lightweight installation.
Can be used within cast iron standard flanges. (Orifice flanges not available in cast iron) Simple orifice device now available for cast iron piping without welding.
Can be sized for restriction or pressure drop control in conjunction with flow measurement. Eliminate additional throttling valve by combining flow meter and restrictor as one integral unit.
Port size (Pizometer through hole) can be increased if required. Reducing the chance of plugging in lines containing particulates, solids, etc.
Metering Taps drilled "straight through" to the pipe I.D. Easily  accessible and cleaned using pipe cleaner or rod out kit.
Can be used with Lambda flange mount bracket for installing instrumentation. Option for direct mount installation of manifold transmitter or indicating gage offering consolidated installation (Remote mount also available)
Pre-attached nameplate. Serial #, Tag #, ID, Bore and other information available. Also available as SS attachment with ss wire or with RTJ type nameplate holder.
Flexible readout options. Can be used with any Transmitter, Gage, Manifold arrangement.
Standard valve kit available. Includes nipples and shutoff valves to streamline installation.

Lambda Square, Inc 1-800-587-5423 Tel: 631-587-1000 Fax: 631-587-1011

Lambda Square, Inc. specializes
in the manufacture of differential pressure flow measurement equipment including venturi tubes, orifice plate and orifice flanges, meter tubes, orifice holding blocks, orifice restriction unions, sanitary plates, single and dual chamber fittings, ASME flow nozzles, manifolds, straightening vanes, elbow flow meters, seal pots and many other liquid, gas and steam control products.
Please contact Lambda Square with any questions concerning design and custom manufacture.
Copyright 1998-2019 Lambda Square, Inc. All rights reserved.

Designed and deployed by Industrial Advertising Links Page