Triplex Plunger Pumps API 674 - TB Series

Dynapro Pumps Triplex Plunger Pumps TB Series (also TBP for Piston) Series are reciprocating triplex 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.


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.


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


Connecting Rods

High strength cast steel construction
Precision automotive type Babbitt lined journal bearings.


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 950 USgpm.