16mm Inside Diameter x 19mm Outside Diameter 5 Metres Clear PVC Flexible Flexible Vinyl Pipe Water Hose Fish AQAURIUM Pond AIR TUBING Food Grade - PENTECH MOULDING CO LTD - Made in England 20mm (3/4") Clear Braided PVC Hose Pipe - 20m Length - Heavy Duty, Water, Airline, Compressor, Food Grade
THCity Black Flexible Vinyl Tubing PVC Food Grade Hydroponic Irrigation Black 300 Feet 3/4" Inside Diameter Food grade. Made with FDA approved materials. Thick walled and very durable yet bends easily. Smooth inside and out for best flow. Excellent quality.
Imperial units Fluid flow velocity in a circular pipe can be calculated with Imperial or American units as v = 1.273 q / d 2 = 0.4084 q gpm / d in 2 (1) where v = velocity (ft/min, ft/s) q = volume flow (ft 3 /s, ft 3 /min) d = pipe inside diameter (ft) q gpm = volume flow (US gal/min, gpm)
About product and suppliers: Alibaba offers 581 8 inch flexible hose products. About 40% of these are rubber hoses, 16% are plastic tubes, and 4% are fire hose. A wide variety of 8 inch flexible hose options are available to you, such as pvc, pp, and plastic.
It is preferred for use as food grade seals because silicone is non-toxic, very flexible, and has a great working temperature range. If you need the best kind of FDA-approved gaskets and food grade seals available, look no further than silicone food grade rubber.