Weco® and Chiksan® Sour Gas Flowline

All Chiksan and Weco sour gas products meet or exceed NACE and API requirements. FMC began providing quality sour gas long before the National Association of Corrosion Engineers (NACE) Standard MR-01-75 was written. Today, all Chiksan and Weco brand products for sour gas service meet or exceed NACE Standard MR-01-75 and the American Petroleum Institute’s (API) Standard RP-14E.

Sour Gas Equipment Categories:

Weco® Wing Unions

Weco® Wing Unions

Weco wing unions are the most complete line of sour gas pipe connections available, ranging in sizes from 2-to 6-inches with cold working pressure to 15,000 psi. All Weco unions are color coded with an olive green, zinc-chromatic primer for quick identification. Material meets NACE MR-01-75, ASTM and AISI standards.

Features and Benefits:

  • Positive sealing designs, provide positive-pressure tight sealing
  • Fast make-up and break-out
  • End connections-butt weld connection and other end connections

Weco® Plug Valves

Weco sour gas plug valves are reliable, quarter-turn valves designed for services to 15,000 psi cold working pressure. These rigged valves range in size from 1 to 3 inches and come with integral Weco wing union ends. The union ends add considerable strength to connection, reduce turbulence, and minimize corrosion and stress concentration sites. Weco sour gas plug valves are available with manual, handwheel, and hydraulic actuators.

Model DR Plug Valves
  • Floating segments insure positive seal

    Dual seal segments float slightly to offset possible micro-expansion of the valve body and to insure a positive seal in sour gas applications.

  • Easy operation under pressure

    The cylindrical plug fits between a set of precision machined seal and side segments for ultra low operating torque under pressure.


Model ULT Plug Valves
  • Exclusive patented seal design extends service life

    Seal design forces line fluid between the plug/seal interface when the valve is closed to eliminate body erosion and limit wear to replaceable components, extending service life 3 to 5 times over other plug valves while reducing maintenance costs.

  • Two-piece floating plug/stem

    FMC’s proprietary floating plug and stem uniformly distribute load against the downstream seat to improve sealing and reduce operating torque.

  • Bottom entry for fast, easy repair

    The Model ULT valve features bottom entry design for ease of inspection and repair without removal of operator or actuator.

Chiksan® Swivel Joints

Chiksan® Swivel Joints

Chiksan swivel joints are available in 2- to 4-inch sizes and can handle cold working pressure up to 15,000 psi in sour gas service.

Features and Benefits:

  • Streamlined bore minimizes flow restrictions, minimizes turbulence and pressure drop
  • Patented, Snap-in ball races, for extra strength and low operating torque
  • Dual seal design isolates races and bearings, used to isolate the races and bearings from line fluid
  • Leak detection port, between the primary packing and the secondary O-ring seal.
  • Integral Weco wing union ends, eliminating welding and minimizing turbulence
  • Field repairable    

Weco® Pup Joints

Weco® Pup Joints

FMC’s lightweight, one-piece pup joints feature integral Weco wing union end connections. Available in lengths to 10 feet, Weco alloy-steel pup joints efficiently handle sour gas fluids at cold working pressures up to 15,000 psi.

Chiksan® Cementing & Circulating Hoses

Chiksan® Cementing & Circulating Hoses

Chiksan Cementing and Circulating Hoses can handle sour gas fluids at cold working pressures up to 15,000 psi. These rugged, all-steel hoses are available in sizes and configurations to meet all your sour gas needs. All materials meet NACE MR-01-75, ASTM or AISI standards.

Features and Benefits:
  • Chiksan swivel joints-provide flexibility, absorb shock and vibration.
  • Weco wing union connections-insure fast, pressure-tight make-up and break-out without threading, welding, or special connections.

4 Types of Chiksan® Cementing & Circulating Hoses:
  • LSG-10 Longsweep (2 Style 50 or Style 10) Intergral
  • LSG-10 Longsweep (1 Style 50 and 1 Style 10) Intergral
  • LSG-10 Longsweep (2 Style 50) Integral
  • LSG-15 Longsweep (2 Style 50) Welded

Weco® Adapters & Integral Fittings

Weco® Adapters & Integral Fittings

Weco adapters and integral fittings are ideal for handling sour gas fluids at cold working pressures up to 15,000 psi. These proven products feature high-quality forged construction with integral Weco wing union end connections for a high-strength, high-integrity connection every time. Tees, elbows, crosses, wyes, and laterals can be combined to suit virtually any installation.

Weco® Pressure Relief Valves

Weco® Pressure Relief Valves

 Weco Pressure Relief Valves for sour gas service are the automatic way to relieve pressure at preset system limits. These rugged, compact valves are available for cold working pressures up to 10,000 psi. The pressure relief valve comes in a 2-inch size with integral Weco wing union ends.

Weco® Swing Check Valves

Weco® Swing Check Valves

FMC’s patented flowline check valves are used to isolate well servicing equipment from high pressure fluids. These rugged valves seal against sour gas fluids up to 10,000 psi. They are available with or without a downstream vent (consult factory), and are available with integral Weco wing union ends.

Download FMC Weco® and Chiksan® Sour Gas Flowline Catalog for more details and specifications.

Prefer to write?
Please fill in below.

* *


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.

News & Highlights

New Product for SALE !!!



3) Balluff Micropulse Transducer, Linear Type, BTL5 4 to 20 mA output, 700 mm Length

4) FAG 29388 Thrust Roller Bearing, Type EM-B. (440 ID X 680 OD X 145MM HT)

Please contact us at +65 6505 9200 or for a quotation today.