Over 50 Years of Differential Pressure Flow Metering Experience

Product Index









Welcome to Lambda Square
The Differential Pressure Flow Meter Specialists

Since 1986, Lambda Square has specialized in the manufacture of differential pressure flow measurement equipment. Our company founders have been designing, testing and marketing d/p flow meters - since the 1950s.

In addition to in-house manufacturing, we have aligned ourselves with strategic fabrication partners, enabling us to offer a more complete and diversified line of differential pressure flow meters to meet most standards and specifications.

Marketing of our product line is done through a network of resellers, sales representatives, distributors and OEMs, as well as directly to end users for certain products. We currently have installations in all 50 states domestically as well as many countries throughout the world.
Service: Liquids, Gases and Steam
Sizes: 1/8" - 60" Standard - Custom Sizes - Our Specialty
Flow Rate: Dependant on Line Size
Pressure: Vacuum Through 10000 PSIG
Temp: -450 deg. F Through 1400 Deg. F
Materials: 300 Series SS, Exotic Alloys, Brass, PVC, Carbon Steel, Etc.
Differential Pressure: 0.001" - 500 PSID
Standards: ASME, ANSI B31.1, ISA, AGA, IS0, DIN, Militray and Nuclear.
Traceable: NIST Standards, Nuclear & Military
Calibration of All Types of Flow Meters to NIST, ISO, IEC and Other Specs.
Consulting and Start Up Service Available
ORIFICE PRODUCTS:

Oripac Models:
5300 - For Air, Gas, Liquid or Steam
4150-P - For Air and Gas
4150 - For Gas and Liquid
Orifice Plate
Orifice Flanges

OTHER ORIFICE PRODUCTS:
Orifice Holding Blocks
Meter Tubes
RTJ Orifice Holders
Single & Dual Chamber Orifice Fittings
Bleed Rings
Orifice Restriction Unions
VENTURI TUBES:
Model 2300 Fiberglass Insert
Model 3500 ASME Type
Lo Head Loss Type:
V Series | CV Series | B+ Series
OTHER PRODUCTS:
ASME Flow Nozzles
Seal Pots/Condensate Chambers
Straightening Vanes
Elbow Meters

Averaging Pitot Tubes
Secondary Instrumentation Including Gages, Transmitter & Accessories

Tel: 631-587-1000 · Fax: 631-587-1011
71 Deer Park Ave. Babylon, NY 11702 USA