(1) Vortex flowmeters are not suitable for low Reynolds number (ReD ≤ 2 * 104) measurements, and are limited in applications with high viscosity, low flow rate, and small diameter. (2) The instrument with vibration resistance should be selected in the place where the pipe has vibration. (3) The stability of the vortex separation is affected by the distortion of the flow velocity distribution and the swirling flow. The straight pipe section of sufficient length should be configured according to the different types of chokes on the upstream side. Generally, the length of the straight pipe section of the throttling differential flowmeter can be referred to. installation. (4) The instrument is still lacking test data in the application of pulsating flow and mixed phase flow. (5) Compared with the turbine flowmeter, the meter factor is low, the resolution is low, and the larger the diameter, the lower the diameter, generally applied to small and medium diameters (DN25~DN300). Flap Wheels with shaft are made of multiple abrasive sheets attached to a core for fabricating, deburring, cleaning, polishing, and finishing jobs in metalworking applications. The sheets wear away during jobs, constantly exposing fresh abrasive coating to provide an even finish. Each grit flap comes in contact with the work piece at a slightly different angle, which prevents scratches. Because abrasive flap wheels conform to the shape of the surface material, they are commonly used to finish complex shapes and tight contours on a work piece. Flap wheels attach to grinders, drills, impact wrenches,or handheld rotary tools. They are either pre-mounted on a central hub, or unmounted for attaching to a compatible arbor.
Suitable for grinding the inner hole and camber of all kinds of metal and non-metal materials, select the suitable size of flap wheel with shaft for grinding. Remove burrs, rust, metal (plastic) and other surface grinding, internal and outter surface grinding, the grinding before painting, etc.Polishing, deburring, and removal of pits, burrs, and scratches. Remove parting lines and provide a uniform scratch pattern on all metals. The 1/4 inch stem allows for easy mounting on a die grinder or right angle die grinder.
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