The Double Sealed Rod Pump designed and developed by Weima applies the combination of mechanical seal and cup seal (There are three combinations: both seal are on the top of the pump barrel, both seal are at the bottom of the pump barrel, and both seal are distributed at both ends of the pump barrel), which greatly improves the sealing between the pump and the seating, and extend the service life on one hand; and guarantees the reliability of cycle operations on the other hand.
Displacement: Calculation is the same as that of API rod pump.
Top double sealed
Bottom double sealed
Top & bottom double sealed
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