WATER SAMPLER Russian patent published in 1996 - IPC

FIELD: drawing samples from different depths of well or open water basins for exploration and construction. SUBSTANCE: water sampler is provided with cover which is securred in upper portion of inner surface of housing and is sealed relative to it. Water valve is made in form of piston provided with seal. Piston is connected with upper and lower rods. Seat of water valve has chamber for receiving the piston. Water valve has blind bore in axial direction and radial hole connected with it. Seat of water valve has through radial passage for matching with radial hole. Diameter of piston exceeds that of disk. Disk is provided with seal. Ferrule is made of transparent material and is provided with scale showing depth of drawing water samples. Disk is provided with indicator. EFFECT: enhanced reliability. 2 cl, 1 dwg