Cameron offers an expertise in the design, sizing and manufacture of two broad varieties of orifice plates; those used for the measurement of fluids (measurement orifice) and those used for the control of the movement of a fluid (restriction orifice). Both types are available in a broad range of materials for line sizes of ½” though 60”.

Used to determine the rate of flow of a fluid, a measurement orifice is precisely sized and manufactured in compliance to an international standard of ISO, API, ASME, AGA, etc. Specific styles are offered for installation into the following types of pipe fittings which are also offered by Cameron:

·         Orifice flange unions (OFU), offered with a variety of face style

·         Single- or dual-chamber orifice fittings

·         Orifice holding blocks

·         2” sonic velocity gas flow provers

Restriction orifices are specially designed for the rigors of very high differential pressures associated with the intended purpose of reducing the flowing pressure or the rate of flow. Consultation services offered by Cameron evaluate the processes conditions and desired result to provide guidance on the plate thickness, material, edge finish and bore of the restriction. Designs include factory assembled multistage assemblies for the purposes, where required, of maintaining sub-sonic flow.

Straightening Vanes

The use of straightening vanes in meter runs serves a twofold purpose The turbulence often created in a complex piping system is straightened and smoothed to a normal flow pattern. The amount of straight pipe required preceding an orifice is reduced. NuFlo™ offers both flanged and pin type straightening vanes. Vanes are available with carbon steel, 304 or 316 stainless steel tubing welded together and securely attached into the meter run. 

staggered centers. 

Spectacle Blinds

Spectacle blinds also called Figure 8 Blanks, these blinds have one solid end and one open end connected by a web or tie bar. Standard to meet API 590. Also available in other flange types (RTJ & Flat Face), other materials (304SS, 316SS, 410SS, Duplex, Hastelloy®, Monel & Chrome Moly) and other micro finish flange finishes.

An orifice plate is one of the most popular primary devices for measuring gases and low-viscosity liquids. The NuFlo Orifice Flange Union helps ensure accurate and predictable measurements by securing the orifice plate’s position in the pipe bore.

The NuFlo Orifice Flange Union is comprised of a set of ANSI flanges machined with differential pressure taps, gaskets, studs, nuts, and jack screws. The jack screws thread directly into each flange and are easily tightened to allow separation of flanges for inspecting or replacing an orifice plate. Orifice flange unions are available in 1-in. and larger pipe sizes, and a wide variety of pressure ranges, material grades, studs/nuts, and gaskets. Raised-face flange types can be used with Category 520 orifice plates. Ring-joint flange types can be used with Category 560, 580 or 590 orifice plate holders and universal Category 500 orifice plates. Orifice flange unions do not include an orifice plate; orifice plates and/or orifice plate holders must be ordered separately.

All flanges are precision-machined to ASME B16.36 Flange Piping Code and have a national Canadian Registration Number (CRN). The bore finish and tap locations are compliant with ANSI / API 2530 (AGA-3) measurement specifications.

Cameron offers an expertise in the design, sizing and manufacture of two broad varieties of orifice plates; those used for the measurement of fluids (measurement orifice) and those used for the control of the movement of a fluid (restriction orifice). Both types are available in a broad range of materials for line sizes of ½” though 60”.

Used to determine the rate of flow of a fluid, a measurement orifice is precisely sized and manufactured in compliance to an international standard of ISO, API, ASME, AGA, etc. Specific styles are offered for installation into the following types of pipe fittings which are also offered by Cameron:

·         Orifice flange unions (OFU), offered with a variety of face style

·         Single- or dual-chamber orifice fittings

·         Orifice holding blocks

·         2” sonic velocity gas flow provers

Restriction orifices are specially designed for the rigors of very high differential pressures associated with the intended purpose of reducing the flowing pressure or the rate of flow. Consultation services offered by Cameron evaluate the processes conditions and desired result to provide guidance on the plate thickness, material, edge finish and bore of the restriction. Designs include factory assembled multistage assemblies for the purposes, where required, of maintaining sub-sonic flow.

The meter runs are fabricated by trained manufacturing personnel with complete facilities for machining, welding, gauging and inspection. This produces a product with quality and metering accuracy not possible with field-fabricated units. All meter runs are factory-aligned and welded with special equipment that guarantees a straight, smooth meter run without defects. Standard lengths meet AGA/API requirements.