Lambda Square Metering and Measurement Equipment

About Lambda Square

Lambda Square Metering and Measurement Equipment specialize 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.

Lambda Square provides complete flow measurement systems for gas, liquid and steam flow measurement. Secondary instrumentation is available including indicating gauges, manifolds, transmitters, recorders, and totalizers with a complete line of options.

Lambda Square Product

ORIPAC Flow Measurement System

ORIPAC Flow Measurement Systems have been designed for use wherever there is an application for a conventional flow orifice plate. They can also be used in place of other primary differential producers for efficiency and cost effectiveness. ORIPAC was designed and developed by engineers experienced 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.

The ORIPAC Series is a complete orifice plate flow measurement package incorporating an orifice plate with a unique holder or carrier ring containing metering taps and integral gaskets.

• ORIPAC Model 5300: Unitized Stainless Steel Construction
  Stainless Steel Construction For Metering Water, Air, Steam & Corrosive Fluids, High-Pressure and High-Temperature For Water, Air, Steam, Corrosive Fluids, High-Pressure & High-Temperature Fluids
• ORIPAC Model 4150: Fiberglass Ring with Stainless Steel Plate
  For Water, Air, & Gases
• ORIPAC Model 4150-P: All PVC or CPVC Construction
  For Low Pressure Gases
• ORIPAC Model 4150-T: All Teflon (PTFE) Construction
  PTFE (Teflon®) Construction for Metering Water, Air, Corrosive Fluids and High-Temperature Gases

Venturi Flow Meters

Venturi Flow Metering Lambda Square offers two Venturi flow meter models – both in a complete range of sizes:

• VENTURI MODEL 2300: Unitized Stainless Steel Construction
  • The Model 2300 offers short laying length, easy installation, high accuracy, and very low permanent pressure loss. It is corrosion-resistant and carries minimal maintenance requirements, making it as economical as it is accurate and consistent. These low maintenance devices provide reliable performance and minimal headloss for a wide range of municipal and industrial applications.
  • Made of dimensionally stable fiberglass-reinforced vinyl ester epoxy ensures accurate flow measurement and long life.
  • Highly corrosion resistant, self-scouring, and accommodates a wide range of line fluids, line pressures and temperature conditions up to 350°F.
  • The carbon steel holding flange is coated with vinyl ester epoxy and has 316 stainless steel pressure connections. The Model 2300 comes ready to install with neoprene flange gaskets to fit pipes from 3/4″ to 120″. It can be supplied with bronze, stainless steel, or other metal throat materials.
  •  Advantages:
    • Very Low Permanent Pressure Loss
    • Low Cost 1/3 the Cost of Cast Iron
    • Corrosion Resistant
    • Excellent Flow Measurement
    • Accurate
    • Easy Installation
    • Minimal Maintenance – Set it and forget it!
    • Long Service Life
• VENTURI MODEL 2350: Fiberglass Ring with Stainless Steel Plate
  • For flow metering with minimal head-loss and designed to fit when space is at a premium.
  • The very short-laying length Model 2350 provides high accuracy and low permanent pressure loss while minimizing space requirements. The flow conditioning within the inlet section allows for closer coupling with upstream pipe fittings.
  • These easy to install, low maintenance devices provide reliable performance and minimal headloss for a wide range of municipal and industrial applications.
  • Made of dimensionally stable fiberglass-reinforced vinyl ester epoxy ensures accurate flow measurement and long life.
  • Highly corrosion resistant, self-scouring, and accommodates a wide range of line fluids, line pressures and temperature conditions up to 350°F.
  • The carbon steel holding flange is coated with vinyl ester epoxy and has 316 stainless steel pressure connections. The Model 2350 comes ready to install with neoprene flange gaskets to fit pipes from 3/4″ to 120″. It can be supplied with bronze, stainless steel, or other metal throat materials.
  • Advantages:
    • Short Laying Length
    • Low Permanent Pressure Loss
    • Low Cost – 1/3 the Cost of Cast Iron
    • Corrosion Resistant
    • Easy Installation Between ANSI Flanges
    • Minimal Maintenance – Install it and forget it
    • Consistent Accuracy
    • Long Service Life

Orifice Plates – Paddle Types

Industry standart tyoe and custom configurated orifice plate

An orifice plate is a device used for measuring flow rate, for reducing pressure or for restricting flow (in the latter two cases it is often called a restriction plate). Either a volumetric or mass flow rate may be determined, depending on the calculation associated with the orifice plate.

• Materials available: 304 / 316 Stainless, MONEL, Exotics, Carbon Steel, Teflon, CPVC, and more
• Available in RF (Raised Face) or RTJ (Ring Type Joint) configurations – Welding Neck / Slip-On / Threaded
• Supplied with two 1/2″ NPT tappings in each flange
• Lambda Square Orifice Flange Unions are fabricated to ASME B16.36 requirements
• Our Orifice Flange Union kits are available ready-to-install, complete nuts, bolts, screws, and gaskets

Illustrations are representative of only a few of the possible configurations..

• CONCENTRIC
  • Square Edge Concentric Bore & Bevel
  • Concentric orifice with a square edge. Edge thickness is limited with a downstream beveled bore. Most common and economical type of orifice plate.
• ECCENTRIC
  • Eccentrically Bored Orifice
  • Popular in water treatment, oil, and paper industries – anywhere flow contains solids and for slurries. Bore edge is typically inscribed in a circle 98% of line ID.
• QUADRANT
  • Quadrant Bore Orifice
  • Measure high-viscosity flows – heavy crude, syrups, slurries. Recommended when the Reynolds Number factor is less than 10,000.
• SEGMENTAL
  • Radius Bore
  • For flows with entrained solids or heavy sediments. Bore may be at the bottom or top of pipe depending on type of flow and type of unwanted materials.
• RESTRICTION
  • Restriction Orifice
  • Designed for pressure restriction, not flow measurement. No bevel and no limit to Beta ratio.
• MULTI-BORE
  • Flow Control & Restriction
  • No bevel and no limit to Beta ratio. Available in multi-bore for higher pressure drops.

RTJ Orifice Plates

Ring Type Joint (RTJ) orifice plates are recommended for clean liquids, gases and low velocity steam flows.

RTJ orifice plates incorporate integral gaskets for installation between ring-type joint flanges. Based on proven technology, there are no moving parts and they are suitable for high-temperature and high-pressure applications.

Plate thickness depends on line size and differential pressure and should be sufficient to prevent the plate from deforming under operating conditions.

RTJ type orifice plates may be machined in one piece, or alternatively from two pieces, with an orifice plate screwed onto a carrier ring/gasket.

• Orifice plates can be made from 304, 316, or other alloys in accordance with customer drawings as required.
• RTJ type orifice plates can be supplied complete with ANSI B16.36 orifice flanges.
• Plate and handle are either one-piece seamless design or the handle is welded to the plate – depending on size and ASME class.
• Flange ASME class and other standard info is stamped on the handle.

Universal Orifice Plates

Universal Orifice Plates are fabricated for use with RTJ plate holders and are interchangeable with most orifice fittings. Each plate is carefully manufactured to meet or exceed AGA Report #3, ISA, and A.S.M.E. recommendations.

• Commonly referred to as Differential Pressure Orifice Fitting Plates.
• Can be used with all standard orifice fitting assemblies and RTJ (Ring-Type Joint) plate holders.
• Standardized sizing facilitates use with any dual or single-chambered orifice plates.
• The most common method of differential pressure flow measurement.
• High toleration of environmental, atmospheric, and process extremes.
• Functionally simple for predictable and reliable performance.
• Manufactured from 304, 316, or other alloys.
• Easy installation.

Orifice Flanges

Orifice Flanges are used to meter the volumetric flow rate of liquids or gases utilizing tapped or welded meter connections. The two pipe taps are used to measure the pressure drop of the flow through an Orifice Plate.

• Available in RF (Raised Face) or RJT (Ring Type Joint) configurations – Welding Neck / Slip-On / Threaded
• Supplied with two 1/2″ NPT tappings in each flange
• Lambda Square Orifice Flange Unions are fabricated to ASME B16.36 requirements
• Our Orifice Flange Union kits are available ready-to-install, complete nuts, bolts, screws, and gaskets

Unlike a standard orifice plate, the ORIPAC is a true primary element and includes components for differential pressure measurement.

Seal Pots/Condensate Chambers

Condensate chambers are used as a barrier between the main line and the secondary instruments in the measurement of steam or other vapors which condense to a liquid state insuring compatibility with the secondary instruments. They can also be used to cool down very high temperature liquids. Seal pots are installed where the line fluid is corrosive or viscous to the extent where it cannot be permitted to contact the secondary instrument (transmitter or gage) thereby acting as a liquid barrier between the line fluid and the condensate.

Material: Available in carbon steel, stainless steel, P22 and other alloy steel and other materials. Standard pipe sizes are 2″ through 6″ and pressure ratings for carbon steel as indicated on the enclosed chart. Connection fittings are NPT or welded socket adaptors. Chambers can be hydrostatically tested and x-rayed upon request. ISO and ISA standards are typically followed unless otherwise specified. Welding can be to ANSI 1331.1 code if required.

Typical industry applications include: refineries, power plants, chemical & petrochemical, steel plants and other process industries.

Installation: Either vertical or horizontal lines between the primary (Flow Meter) and the secondary (transmitter/gage) to act as steel or barrier to the line fluid permitting direct sensation of the flow conditions. Units should be mounted at the same level minimizing possible error that could arise due to unequal head of fluid in the connecting pressure lines.

Initial sizing of the required liquid level in the seal pots is function of the flow parameters. The basic rule of thumb is that the level in the chambers should equal the total volume of condensate in the transmitter and the sensing lines. This also complies with ASME requirements. Exact capacity is also contingent on a number of other issues including: relative humidity, dew point, pressure, flow rate, etc. Standard maintenance includes draining/filling as necessary.

Straightening Vanes

Installed upstream of flow meter when adequate upstream pipe run section can not be met. Proper installation will straighten out flow profile to increase metering accuracy. Available in carbon steel, stainless steel and other alloys. Perforated plate and vane type flow straighteners also available.

• TYPE I CONCENTRIC
• TYPE II CONCENTRIC
• TYPE III CONCENTRIC

ASME Flow Nozzles

Standard Sizes: 1/8″ – 60″, All Flange Ratings. Available in stainless steel, carbon steel, brass, fiberglass, spun aluminum, PVC, Hastalloy, Monel and other materials. Available in all line sizes and throats. Sized for standard, critical or sonic flow conditions. Also can be provided as part of an ASME nozzle meter run with piping, flanges, calibration, etc.

The “STANDARD” FLANGE FLOW NOZZLE style is the most commonly used Flow Nozzle. It is designed to be inserted between pipe flanges. A special machined shoulder on the back side of the flange assures the proper alignment of the nozzle with the pipe I.D. This style Flow Nozzle utilizes pipe wall taps whose location is determined by the Beta Ratio.

The “WELD-IN” FLOW NOZZLE style is designed to be installed permanently in a pipe section. This nozzle has a specially machined step on its outside diameter that is used to align a beveled inlet and outlet bored pipe section. This type nozzle is widely used where high temperature and pressure applications prohibit the use of pipe flanges such as in power plant and feed water installations. Pipe wall taps are utilized with this style.

The “TAPPED” TYPE FLANGED FLOW NOZZLE is similar to the “FLANGE” style, but includes a downstream tap (usually a 1/2″ connection) provided in the flange of the nozzle. This style nozzle is recommended in smaller line sizes where the downstream tap may interfere with the pipe weld or downstream mounting flange.

The “HOLDING RING” FLOW NOZZLE style is designed so that the welding of dissimilar materials is eliminated, A special holding ring and locating pins are made of the same material as the pipe that the nozzle Is to be installed in. This allows for the nozzle to be offered in a wide range of materials. This style is not recommended for line sizes below 4 Inches.

Source: Lambda Square

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