Pup Joints

Integral, NPST, threaded or butt-weld pup joints for setting exact high-pressure flowline length and connection orientation.

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PRODUCT OVERVIEW

Purpose and construction

Pup joints are straight pressure-containing sections used between valves, fittings and unions. Integral designs use one-piece forged-ended seamless construction; NPST and other threaded or butt-weld assemblies provide alternative length and maintenance options.

Technical features

Integral and NPST construction
Butt-weld, integral, LPT-threaded and NPST-threaded ends
One-piece forged-alloy-steel integral construction
Integral lengths up to 12 ft; threaded/butt-weld lengths up to 20 ft
Standard and non-standard lengths
Factory-assembled and pressure-tested threaded options
MTR and hydrostatic-test documentation when specified

Typical applications

Well testing
Fracturing and stimulation
Cement manifolds
Choke and kill lines
High-pressure discharge lines

TECHNICAL DATA

Selection and supply basis

Nominal size	Reference ranges include 1 in, 1-1/2 in, 2 in, 3 in and 4 in; configuration dependent
Common high-pressure sizes	2 in, 3 in and 4 in
Union figure	Fig 602, Fig 1002 or Fig 1502
Rated working pressure	6,000 to 20,000 psi, construction dependent
Length	Integral up to 12 ft; threaded/butt-weld up to 20 ft
Construction	Integral, NPST, LPT-threaded or butt-weld
Service	Standard or sour-gas service; final metallurgy and hardness confirmed against the approved fluid data
Temperature basis	Project-selected temperature class; reference range -46 °C to 121 °C where stated
Inspection	Material traceability, dimensional inspection, NDE and hydrostatic/functional testing to the approved ITP
Documentation	Datasheet, drawings, MTRs, NDE and pressure-test records as specified

Supply positioning

Energy Equipment International supplies flowline equipment against approved project requirements. Manufacturing, monogram, certification, interchangeability and performance claims apply only when confirmed in the selected supplier’s approved documentation.

RELATED FLOWLINE PRODUCTS

Complete the pressure line.