FMC WECO Butterfly Valve Model 12N is a range of industrial butterfly valves designed for reliable flow isolation, regulation, and throttling in demanding oil & gas, drilling, marine, and industrial applications. Originally developed under the FMC WECO brand and featured in TechnipFMC's flowline equipment range, the Model 12N butterfly valve features a compact wafer-style body designed for installation between compatible industrial pipe flanges.
The FMC WECO Model 12N Butterfly Valve is available in several sizes, including 4-inch (P/N: 3229886), 5-inch (P/N: 3229887), and 6-inch (P/N: 3229888) configurations. These valves incorporate ductile iron bodies and discs, 416 stainless steel stems, and nitrile seats to provide dependable flow control and sealing performance in compatible industrial fluid systems.
Designed for general on/off and throttling service, the WECO Model 12N butterfly valve features a self-centering wafer body suitable for installation between ANSI Class 125 or Class 150 flanges. The valve is rated for cold working pressures up to 175 psi (approximately 12 bar), subject to applicable operating conditions.
STX Engineering Solutions supports oil & gas, drilling, offshore, marine, manufacturing, and industrial customers in Kemaman, Terengganu, Malaysia with the sourcing and supply of FMC WECO Butterfly Valves, replacement valve components, industrial flow control equipment, and related piping products.
Key Features
Wafer-Type Butterfly Valve Design – Features a compact wafer body designed for installation between compatible industrial pipe flanges, providing efficient flow control without requiring excessive installation space.
On/Off and Throttling Capability – Suitable for general flow isolation and throttling applications within the manufacturer's specified operating limits.
Ductile Iron Body Construction – Manufactured with a durable ductile iron body designed for mechanical strength and dependable industrial service.
Ductile Iron Disc – Incorporates a ductile iron valve disc for reliable opening, closing, and flow regulation.
416 Stainless Steel Stem – Features stainless steel stem components for mechanical durability and reliable valve operation.
Nitrile Seat – Equipped with a nitrile sealing seat for compatible fluid applications, providing dependable sealing performance.
Self-Centering Design – Designed to align between compatible ANSI Class 125 or Class 150 pipe flanges.
Pressure Capability – Model 12N valves are rated for cold working pressures up to 175 psi (approximately 12 bar).
Quarter-Turn Operation – Uses a 90-degree disc rotation for convenient valve opening and closing when fitted with a compatible operating mechanism.
Multiple Valve Sizes – Available in 4-inch, 5-inch, and 6-inch configurations under part numbers 3229886, 3229887, and 3229888, respectively.
Actuation Options – Compatible operating handles, gear operators, or actuators may be selected according to valve size and application requirements.
Industrial Service Design – Suitable for compatible piping systems in oil & gas, marine, manufacturing, and industrial facilities.
Applications
FMC WECO Butterfly Valves can be used in compatible applications including:
Oil & gas equipment
Offshore drilling equipment
Drilling rig piping systems
Marine piping systems
Industrial fluid control systems
Water distribution systems
Industrial cooling water systems
Hydraulic support equipment
Industrial process piping
Pumping and circulation systems
Water treatment facilities
Industrial manufacturing plants
Flow isolation systems
Fluid throttling applications
General industrial piping installations
The FMC WECO Model 12N Butterfly Valve is particularly suitable for applications requiring compact installation, reliable flow control, and convenient valve operation.
FMC WECO Butterfly Valve – Technical Specifications
Manufacturer / Brand: FMC WECO / TechnipFMC
Product Model: WECO Model 12N
Product Type: Industrial Butterfly Valve
Valve Design: Wafer Type
Part Numbers: 3229886 / 3229887 / 3229888
Available Sizes: 4", 5", and 6"
Body Material: Ductile Iron
Disc Material: Ductile Iron
Stem Material: 416 Stainless Steel
Seat Material: Nitrile (NBR)
Maximum Cold Working Pressure: 175 psi (approximately 12 bar)
Flange Compatibility: ANSI Class 125 / 150
Valve Operation: Quarter-Turn
Service Type: On/Off and Throttling
Connection Type: Wafer / Flanged Installation
Operating Mechanism: Compatible handle, gear operator, or actuator, as specified
FMC WECO Butterfly Valve – Part Number Identification
Part Number
Model
Nominal Size
3229886
WECO 12N
4" (DN100)
3229887
WECO 12N
5" (DN125)
3229888
WECO 12N
6" (DN150)
All three part numbers belong to the FMC WECO Model 12N butterfly valve range and share the same general construction materials and valve design.
FMC WECO Butterfly Valve P/N: 3229886 – 4 Inch
Part Number: 3229886
Product Model: WECO 12N
Valve Size: 4 Inch (DN100)
Valve Type: Wafer Butterfly Valve
Body Material: Ductile Iron
Disc Material: Ductile Iron
Stem Material: 416 Stainless Steel
Seat Material: Nitrile
Cold Working Pressure: 175 psi
Flange Compatibility: ANSI Class 125 / 150
The FMC WECO 3229886 is a 4-inch butterfly valve designed for general industrial fluid isolation and throttling applications. Its compact wafer construction makes it suitable for compatible piping systems where installation space and maintenance accessibility are important.
FMC WECO Butterfly Valve P/N: 3229887 – 5 Inch
Part Number: 3229887
Product Model: WECO 12N
Valve Size: 5 Inch (DN125)
Valve Type: Wafer Butterfly Valve
Body Material: Ductile Iron
Disc Material: Ductile Iron
Stem Material: 416 Stainless Steel
Seat Material: Nitrile
Cold Working Pressure: 175 psi
Flange Compatibility: ANSI Class 125 / 150
The FMC WECO 3229887 is a 5-inch butterfly valve designed for industrial piping applications requiring reliable flow isolation and regulation. Its ductile iron construction and nitrile sealing arrangement provide dependable performance in compatible operating environments.
FMC WECO Butterfly Valve P/N: 3229888 – 6 Inch
Part Number: 3229888
Product Model: WECO 12N
Valve Size: 6 Inch (DN150)
Valve Type: Wafer Butterfly Valve
Body Material: Ductile Iron
Disc Material: Ductile Iron
Stem Material: 416 Stainless Steel
Seat Material: Nitrile
Cold Working Pressure: 175 psi
Flange Compatibility: ANSI Class 125 / 150
The FMC WECO 3229888 is a 6-inch butterfly valve designed for general industrial on/off and throttling service. The valve provides a compact flow control solution for compatible larger-diameter piping systems used in industrial and oil & gas facilities.
FMC WECO Model 12N – Related Part Numbers
The FMC WECO Model 12N butterfly valve range includes additional sizes for different piping requirements.
3229885 – 2" WECO Model 12N Butterfly Valve
3230052 – 3" WECO Model 12N Butterfly Valve
3229886 – 4" WECO Model 12N Butterfly Valve
3229887 – 5" WECO Model 12N Butterfly Valve
3229888 – 6" WECO Model 12N Butterfly Valve
These part numbers represent different nominal sizes within the WECO Model 12N butterfly valve family.
Correct Product Identification
Because FMC WECO butterfly valves are available in different models, body styles, sizes, materials, seat configurations, and pressure ratings, customers should verify the correct valve specifications before ordering.
Important information includes the FMC WECO part number, valve model, nominal size, body material, disc material, stem material, seat material, flange compatibility, pressure rating, and operating mechanism.
Customers should also confirm whether the required supply includes the butterfly valve assembly only or additional operating components such as a manual handle, gear operator, or actuator.
For the Model 12N butterfly valve range, customers should distinguish between the following part numbers:
3229886 – 4-Inch Butterfly Valve
3229887 – 5-Inch Butterfly Valve
3229888 – 6-Inch Butterfly Valve
A photograph of the existing valve, together with its FMC WECO part number, nameplate details, or technical specifications, can help ensure the correct replacement valve is identified.
FMC WECO Butterfly Valve Supplier in Kemaman, Terengganu, Malaysia
For companies looking for an FMC WECO Butterfly Valve supplier in Kemaman, Terengganu, Malaysia, STX Engineering Solutions can assist with the sourcing and supply of FMC WECO Model 12N butterfly valves, industrial flow control valves, replacement components, and related piping equipment.
STX Engineering Solutions supports customers across oil & gas, offshore drilling, marine, manufacturing, water treatment, industrial maintenance, and process equipment sectors.
Contact STX Engineering Solutions today with your FMC WECO Butterfly Valve part number, valve size, technical specifications, photographs, quantity requirements, or equipment details to request a quotation for P/N: 3229886, 3229887, 3229888 and related industrial valve components.
Inquiry - FMC Butterfly Valve P/N: 3229886 , 3229887 , 3229888