An orifice plate assembly works by creating a pressure drop to measure fluid flow. When fluid passes through the bore in the plate, its velocity increases and its pressure decreases, creating a differential pressure between the upstream and downstream sides. This differential pressure is measured by pressure taps connected to a transmitter, and because the pressure drop is proportional to the square of the flow rate, it can be used to calculate the fluid's flow rateWeld neck, Screwed, Slip on flanges Flange taps, vent and drain. Plate design as per B S ./A P I Std H T Bolts Nuts and Jack screw provision.

Specifications

Brand	Floin
Model	OPA 610
Size	15 to 600 NB
Connection	Flanged
Material	ASTM A105 / Carbon Steel / SS304 / SS316 / Customized
Gasket	PTFE / CAF / NON-Asbestos
Fasteners	ASTM A193 Gr B7 - A194 Gr2H / SS304 / SS316

An orifice plate is used for measuring flow rate, for reducing pressure or for restricting flow.

Types
* Concentric Orifice Plate
* Eccentric Orifice Plate
* Segmental Orifice Plate
* Quadrant Edge Orifice Plate

Specifications

Brand	Floin
Model	OP 620
Size	15 to 600 NB
Material	SS304 / SS316 / Customized

The most common orifice plate is the square-edged, concentric bored design. It’s used on most processes including clean liquids, gases and steam flow. It is usually made of stainless steel. Other materials like nickel and Monel are used for a good corrosive resistant property. This type of orifice plate has a very high accuracy.

Eccentric bore orifice plates are plates with the orifice off-center, or eccentric, as opposed to concentric. Location of the bore prevents accumulation of solid materials or foreign particles and makes it useful for measuring fluids containing suspended solid particles. Eccentric bore orifice plates are more uncertain as compared to the concentric orifice.

The segmentally bored orifice plates contain a hole that is a segment of a concentric circle. Like the eccentric orifice plate design, the segmental hole should be offset downward in gas flow applications. Segmental bores are generally used for measuring liquids or gases which carry non-abrasive impurities such as sewage treatment, steel, chemical, water conditioning, paper and petrochemical industries.

The quadrant edge bore is an orifice with the inlet edge rounded. The upstream side of the bore is shaped like a flow nozzle while the downstream side acts as a sharp edge orifice plate. This design is recommended to measure the flow of high viscosity fluids such as heavy crudes, syrups and slurries. The quadrant bore produces a relatively constant coefficient when the Reynolds Number is below 10,000.

The RTJ type orifice plate incorporates an integral gasket, either oval or octagonal ring, for mounting between ring type joint flanges. It is based on proven technology, has no moving parts and is suitable for high temperature and pressure applications. Orifice plates are recommended for clean liquids, gases and low velocity steam flows.

Specifications

Brand	Floin
Model	OPR 630
Size	25 to 600 NB
Material	SS304 / SS316 / Customized

Spectacle Blinds are simple safety devices that are installed between two pipe flanges. During normal operation, the open end is installed as a spacer to allow uninterrupted flow. To stop the flow in the pipeline, the blind end is rotated into place between the flanges.

Specifications

Brand	Floin
Model	OPS 640
Size	25 to 600 NB
Material	SS304 / SS316 / Customized