Product Overview
Standard Orifice Plate (Orifice Plate & Flange)
Because an orifice plate can be installed directly in the pipe flanges, it measures flow more economically than an orifice plate with rings and is generally suitable for large-bore piping. For large-bore piping of 500mm and above, several DP tap holes are drilled around the pipe circumference and connected by a loop-type equalizing pipe to measure the average pressure.
Daehan Instruments' paddle-type orifice plates are used with orifice flange unions. The outside diameter of the plate is fully machined into a uniform disc, giving high concentricity between the orifice bore and the plate outside diameter. The handle is then welded on and the plate is ground to the specified surface finish on dedicated equipment. Blank plates and plates with commonly requested bore sizes are kept in stock at all times, and the handle of each plate is stamped with the pipe size, flange rating, orifice bore and plate material. Standard thicknesses of 304 and 316 stainless steel are stocked; other sizes and materials are manufactured on request.
The bevel of a concentric (Concentric) bore, which serves to limit the plate edge thickness, is machined at 45°. Unless otherwise specified, the bevel is machined to the smaller of 1/50 of the pipe inside diameter or 1/8 of the orifice bore.
An eccentric (Eccentric) bore plate has the orifice offset from the center; the bore is normally inscribed in a circle of 98% of the pipe diameter so that solids or slurry can pass through. It is used in many industries including heavy and light chemicals, steelmaking, paper, nuclear power and petrochemicals.
A segmental (Segmental) bore plate is used for measurement where solids are entrained in gas or liquid flow. The arc of the bore is normally inscribed in a circle of 98% of the pipe diameter, and the segmental opening can be placed at the top or bottom of the pipe. It is used in sewage treatment, steelmaking, chemicals, water treatment, paper and petrochemicals.
English description
Tapping of differential pressure is done by this vener contractor tap Orifice. Since Orifice plate can be installed directly to flange of pipe, flow measurement by this Orifice plate can be performed more economically than by orifice plates with rings, and it is generally suited for large diameter pipes. As for large diameter pipes of 500mm or greater, these Orifice plates are used to measure the average value of pressure by making some differential pressure tapping holes around the pipe and connecting thereto a loop form pressure equalizing pipe. DAEHAN Paddle-Type Orifice Plates are used with Orifice Flange Unions. All outer diameters of the plates are machined, providing a uniformly circular disc. This results in a high degree of concentricity of the Orifice bore and the plate outer diameter. Next, handles are carefully welded on. The plates are then sanded in special machines to a prescribed finish. Blank plates and plates with popular bore size are stocked continuously. Each plate is stamped on its handle with line size, flange rating, Orifice bore and plate material. DAEHAN maintains a stock in Type 304 and 316 Stainless Steel in standard thickness. Other size and materials are available on request. The bore and bevel is the standard of limiting the plate edge thickness. The bevel is machined on a 45 angle to the desired edge thickness. Unless otherwise specified, plates will be bevelled to 1/50 of the line I.D. or 1/8 of the Orifice bore, minimum governing.
