Applications / Oil & gas

Sucker rod pump barrels

C44300 Admiralty Brass barrels for API rod and tubing pumps, supported by Ameritube’s 100% Made in USA, vertically integrated copper tube manufacturing in Hillsboro, TX.

100% Made in USA, vertically integrated copper tube manufacturing in Hillsboro, TX, with a distribution arm for copper, steel, stainless, and nickel alloys.

At a glance

Barrel material

C44300 brass

Governing standard

API Spec. 11AX

Tubing OD range

1.9–4.5 in.

Basic bore range

1.0625–3.75 in.

Technical overview

Ameritube provides sucker rod pump barrels in C44300 Admiralty Brass for API pumps. Admiralty brass is selected for corrosion resistance and improved longevity over carbon steel in oil-drilling service. Use API Spec. 11AX nomenclature together with the material, clearance, valve, and fittings information required for a complete order.

API pump types

Four configurations

While there are only two main types of pumps standardized by API, there are four different types of sucker rod pumps. These are classified by the type of barrel—standing or traveling—and where the pump is anchored—top or bottom. API Spec. 11AX shows the letter designations for rod and tubing pumps available for different barrel thicknesses and either metal or soft-packed plungers. Ameritube provides the pump barrels in C44300 Admiralty Brass.

Standing or traveling barrel
Top- or bottom-anchored pump
Heavy, thin, or X-type barrel; metal or soft-packed plunger

Nomenclature

Read the designation

The complete pump designation of an API pump adds dimensional diameters and lengths to the letter designations. The latest revision incorporates approved sizes and barrel types and separates extensions into top and bottom lengths where required.

Nominal tubing size: 1.9–4.5 in. OD, represented with 2 digits
Basic bore diameter: 1.0625–3.75 in., represented with 3 digits
Pump type: R for rod or T for tubing
Barrel type: H, T, or X for heavy, thin, or X type
Seating location: A top, B bottom, or T bottom traveling barrel
Seating assembly: C cup or M mechanical
Barrel, plunger, upper extension, and lower extension lengths

Worked example

20-125-RHBC-10-4-2-2

API Spec. 11AX shows that a 1¼-in. bore rod-type pump with a 10-ft heavy-walled barrel, a 2-ft upper extension, a 2-ft lower extension, a 4-ft plunger, and a bottom-cup-type seating assembly used in 2⅜-in. tubing would be designated 20-125-RHBC-10-4-2-2.

Confirm every dimensional field before ordering
Use the complete designation with the component material callouts

Ordering information

Specify the assembly

Users of API pumps need to provide, along with the pump nomenclature, the barrel and plunger material, plunger clearance or fit tolerance, and valve (ball and seat) and fittings material. The materials normally available for each component are included in the latest edition of API Spec. 11AX.

Barrel and plunger material
Plunger clearance or fit tolerance
Valve ball and seat material
Fittings material

Technical resource

Keep the full specification close.

Download main brochure ↓

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