FMC

Weco® Wing Unions

Features and Benefits

  • Widest selection in the oilfield
    FMC offers the most complete line of standard service and sour gas wing unions with sizes ranging from 1- to 12-inches in diameter with working pressures up to 20,000 psi. Unions are available with line pipe or tubing threads, butt-weld, or nonpressure-thread seal end connections.
  • Positive sealing designs
    Weco wing union seals vary according to pressure and application. All wing unions provide positive, pressure-tight sealing.
  • Fast make-up and break-out
    Three-lug nuts and rugged self-locking ACME threads provide fast make-up and break-out regardless of position or space restrictions. No special tools are required.
  • Simple Identification
    Weco standard service wing unions are color coded for quick identification.
  • Interchangeable parts
    All Weco parts of the same size, pressure rating, and figure number are interchangeable.
  • Rigid quality control
    Weco unions are produced using the finest raw materials, tooling procedures, and heat-treating techniques available. Each union is carefully inspected to assure long, dependable service in the most extreme conditions.

Weco® Original Wing Unions

Figure 100

Figure 100

 1,000 psi (69 bar) cold working pressure

Recommended service: Manifold and line connections

Features: Pressure-tight make-up with hammer, economical low-pressure union

Figure 200

Figure 200

 2,000 psi (138 bar) cold working pressure

Recommended service: General-service manifolds and lines

Features: Economical, general-purpose union, 1- to 4-inch sizes, butt-weld available

Figure 206

Figure 206

 2,000 psi (138 bar) cold working pressure

Recommended service: Manifold and line connections, suction service, and corrosion service

Features: O-ring in male sub improves sealing and protects metal-to-metal seal against corrosion, replaceable O-ring extends union service life, 1- to 10-inch sizes

Figure 207

Figure 207

 Blanking union, 2,000 psi (138 bar) cold working pressure

Recommended service: To seal manifold connections and protect union threads

Features: Parts are interchangeable with Figs. 200 and 206, O-ring on blanking cap ensures a leak-free seal, Raised lugs on cap allow for make-up with a hammer, Available in butt-weld, Cap can be tapped for pressure gauge if specified

Figure 211

Figure 211

 Insulating union, 2,000 psi (138 bar) cold working pressure

Recommended service: For production systems with electrolytic corrosion problems

Features: Laminated insulating rings eliminate all metal-to-metal contact; insulating rings provide 35 million ohms resistance across the union, O-ring in male sub provides a positive primary seal, Seal ring in female sub provides a positive secondary seal, Insulating rings, O-ring, and seal ring can be replaced to extend union life

Figure 400

Figure 400

 4,000 psi (276 bar) cold working pressure through 4-inch sizes;

2,500 psi (172 bar) cold working pressure, 5- through 12-inch sizes

Recommended service: Manifold and line connections, pump suction, and mud service

Features: 2 1/2- through 12-inch sizes have O-rings for primary seal, Butt-weld available, Available for sour gas service: 2,500 psi (172 bar) cold working pressure, 5- through 12-inch sizes; 4,000 psi (276 bar) cold working pressure, 1- through 4-inch sizes

Figure 600

Figure 600

 6,000 psi (414 bar) cold working pressure

Recommended service: Steam service, boiler connections, manifold, and line connections for production, drilling and well servicing

Features: Bronze seat provides primary seal; will not rust in water services

Figure 602

Figure 602

 6,000 psi (414 bar) cold working pressure

Recommended service: Manifold and line connections and mud service

Features: Compact, Replaceable, lip-type seal provides primary seal, protects secondary metal-to-metal seal, and minimizes flow turbulence, Butt-weld available, Available for sour gas service: 6,000 psi (414 bar) cold working pressure

Figure 1002

Figure 1002

 10,000 psi (690 bar) cold working pressure through 4-inch sizes;

7,500 psi (517 bar) cold working pressure, 5- and 6-inch sizes

Recommended service: Cementing, fracturing, acidizing, testing, and choke-and-kill lines

Feature: Replaceable, lip-type seal provides primary seal, protects secondary metal-to-metal, and minimizes flow turbulence, Butt-weld available, Available for sour gas service: 7,500 psi (517 bar) cold working pressure, 5- and 6-inch sizes have O-rings for primary seals

Figure 1003

Figure 1003

 Misaligning union, 10,000 psi (690 bar) cold working pressure, 2- and 3-inch sizes;

7,500 psi (517 bar) cold working pressure, 4- and 5-inch sizes

Recommend service: For high-pressure connections where lines cannot be aligned

Features: Ball seat provides positive seal with up to 71/2° misalignment; 2-inch model up to 4°, Replacement O-ring on male sub provides primary seal, and protects metal-to-metal seal against abrasion and corrosion, Available with threaded or butt-weld ends

Figure 1502

Figure 1502

 15,000 psi (1034 bar) cold working pressure

Recommended service: Cementing, fracturing, acidizing, testing, and choke-and-kill lines

Features: Replaceable, lip-type seal provides primary seal, protects secondary metal-to-metal seal, and minimizes flow turbulence, Butt-weld available, Available for sour gas service: 10,000 psi (690 bar) cold working pressure; buttweld or nonpressure-thread seal configurations only

Figure 2002

Figure 2002

 20,000 psi (1380 bar) cold working pressure

Recommended service: Cementing, fracturing, acidizing, testing, and choke-and-kill lines

Features: Replaceable, lip-type seal provides primary seal, protects secondary metal-to-metal seal, and minimizes flow turbulence, 2- and 3-inch line sizes, Butt-weld configurations only

Figure 2202

Figure 2202

 15,000 psi (1034 bar) cold working pressure

Recommended service: Especially designed for sour gas service

Features: Meets National Association of Corrosion Engineers Standard MR-01-75 and American Petroleum Institute RP-14E, Heat-treated components are 100% tested for hardness, Fluoroelastomer seal rings, Butt-weld only, Stamped “sour gas” using low-stress dot stamping and painted with a green zinc-chromate primer to assure quick identification

Download FMC Weco® Wing Union Catalog for more details and specifications.

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CONTACT

We are open to discussion on the way you might like to structure the deal, payment plans or what you might have in mind.

To talk to us about your requirements now, please contact:

Naing Win
General Manager
+65 6505-9200

Alternatively, just fill up our Enquiry Form on the right and we will be in touch with you by the next working day.

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