The sucker rod oil-well plunger pumps of TZKV range are intended for crude oil pumping-off from oil exploitation drillholes of depth more than 1000 meters. The pumps of this design are reliable and very spread exploitation equipments. The great advantage of this pumps is their design which makes replacement of the pump without necessity to pull out the oil casing string of the delivery pumping pipes possible. They are capable to pump crude oil containing up to 99 % of water, up to 50 mg/L of hydrogen monosulphide , up to 1.3 gm/L of mechanical impurities and up to 10% of free gas. Temperature of the pumped liquid is up to 130 °C and its viscosity up to 0.025 Pa.s.