Reciprocating Power
Pumps API 674 – Liquid end
Main solutions adopted in the liquid end design
- Plug type valves with spring to assure a perfect sealing and the best hydraulic efficiency.
- Cylinder and packing assembled in one kit to minimize maintenanceoperations.
- Sealing arrangements designed to satisfy different situations connected with the characteristics of the pumped fluid and the site antipollution requirements.
Single packing with one
ring nut regulation
Double packing with leakages recovery
Double packing with double regulation
and suitable fluid flushing
Triple packing with pressurized fluid
seal and leakages recovery
Special design STP Pump with double-acting plunger liquid end to satisfy the need of very large capacity and low NPSH.