Quintuplex Plunger Pumps API 674 - QD & QDP Series
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Dynapro Pumps Quintuplex Plunger Pumps QD Series (QDP for Piston Series) are reciprocating pumps designed in compliance with API 674, Latest Edition.
Design Features and Benefits
Power End Frames
- Gray cast iron one piece construction for added strength and durability
- Symmetrical design allows for left-hand or right-hand drive and easy conversation
- Versatile design accepts V-belt, chain, gear, or clutch drive trains.
Crankshafts
- High strength forging steel construction is standard; forged alloy steel is available for special applications
- Designed for use with tapered roller bearings to carry higher crankshaft/rod loads.
Crossheads
- Circular full piston type crossheads evenly distribute rod load to power frame
- Polished stainless steel crosshead stubs for long seal life
- Double sealed crosshead stub seals to prevent oil loss and oil contamination
- Crosshead extensions connect to plungers outside of power frame for easier
maintenance.
Connecting Rods
- High strength cast steel construction
- Precision automotive type Babbitt lined journal bearings.
Lubrications
- Splash and gravity lubrication promotes lubrication to all moving parts, keeping the oil constantly circulated and cooled
- Oil sight gauge allows quick convenient observation of power end oil level when running or idle.
Fluid Cylinder
- High chrome steel material is standard; stainless steel, aluminum bronze, and duplex stainless steel are available as required
- Threaded NPT connections or flanged for higher flow rate are standard; other special connections available upon request
- Spring loaded valves for positive closing
- Large volumetric areas through seats for reduced fluid velocity and efficient fluid transfer
- ColmonoyTM coated steel plungers are standard; other coatings and materials are available as required.
Performance Envelope-
Design Standard – API 674, Latest Edition.
Design Pressure Rating – Up to 11000 psig.
Temperature Rating – Up to 90 °C.
Flowrate – Up to 1650 USgpm.
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