Riser Tubing

High density polyethylene (HDPE) tubing is most frequently used. It is low cost, provides high strength and durability, and good sampling properties. Available in various sizes, the tubing comes in coils of 100, 200, or 500 ft. (30, 60, or 150 m). Teflon® tubing is also available.

Footvalves

 

Footvalves consist of a check ball inside the valve body, and are available in Delrin or stainless steel, in a variety of sizes from 3/8" to 1-1/4" (10 mm to 32 mm) diameters. Tapered threads enable the footvalve to self-tap onto either end of the riser tubing.

 

 

 

 

 

 

 

 

Flow Rates

Flow rate is a function of the momentum generated in the tubing. It varies with tubing length, submergence depth of the footvalve, flexing of the tube, and the rate at which the tubing is pumped.

Up to 7.6 L/min (2 gpm) with 5/8" x 1/2" (16 mm x 12.5 mm) tubing

Up to 15 L/min (4 gpm) with 1" x 5/6" (25 mm x 21 mm) tubing

Higher volumes are obtained with the use of electric or gasoline powered surface pumping mechanisms.