- Country of manufactureRussia
- Typ av InstallationImmersion
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Pump rod displacement effect NNVD
Pump rod displacement effect NNVD differs from a standard sucker rod pump in its construction - the presence of the hollow plunger rod and hermetically seals the hollow stem. Unlike standard pump plunger NNVD unloaded from the action of the liquid column in the tubing, and liquid from the plunger falls into the hollow stem and not in the pump work chamber. Other conditions being equal - the same drive, including swing, stroke length and serve - DEPTH PUMP UNIT NNVD & nbsp - 2 times greater than the standard SRP or ESP.