FMC

Weco® Butterfly Valves and Actuators

Weco® butterfly valves offer the ultimate in dependable, economical flow control. These field-proven valves are available from stock in 2 through 24-inch sizes and can handle working pressures up to 175 psi. For pressure ratings from 176 psi up to 285 psi, consult factory. Wafer, notched, and lug-type body styles meet requirements for new or existing flowline systems. Using a variety of materials, valve bodies, discs, stems, and seats can be individually matched to specific operating conditions, including temperature range, type and concentration of fluid, and various flow conditions. All materials meet ASTM and AISI standards.

Weco® Butterfly Valve Features and Benefits

Standard Materials of Construction

Valve Part

Standard Material

Optional Materials

Seat & O-ring

Nitrile (Buna N) (-20° F to 200°F)

Hypalon®, Teflon®, Viton®, EPDM, Red Natural Rubber

Body

Ductile Iron

Aluminum, Steel, Stainless Steel

Stem (upper & lower)

410 Stainless Steel

316 Stainless Steel

Disc

Ductile Iron

Aluminum Bronze, 316 Stainless Steel, Ryton®, Kynar®, Halar, Teflon® Coated,

Nickel Plated, Hastelloy®

Spirol/Retainer Pins

302 Stainless Steel

 

Weco® Butterfly Valves Categories:

Model 12Model 12

Short neck, wafer body; 175 psi cold working pressure, 2 to 12-inch sizes; 150 psi cold working pressure, 14 and

16-inch sizes

Recommended service:

General on/off and throttling services from 1mm Hg absolute vacuum to full working pressure

Features: Valves are self-centering and mount between 125 or 150 lb ANSI flanges

Model 12NModel 12N

Short neck, notched body; 175 psi cold working pressure, 2 to 6-inch sizes

Recommended service:

General on/off and throttling services from 1mm Hg absolute vacuum to full working pressure

Features: Valves are notched to fit between lightweight flanges

Model 22Model 22

 Long neck, wafer body; 175 psi cold work­ing pressure, 2 to 12-inch sizes

Recommended service:

General on/off and throttling services from 1mm Hg absolute vacuum to full working pressure

Features: Valves are self-centering and mount between 125 or 150 lb ANSI flanges, Long neck allows for pipe insulation

Model 22LModel 22L

 Long neck, lug body, 175 psi cold working pressure, 2 to 24-inch sizes

Recommended service:

General on/off and throttling services from 1mm Hg absolute vacuum to full working pressure

Features: Tapped lugs allow independent upstream or downstream bolting to 125 or 150 lb ANSI flanges, Long neck allows for pipe insulation

Download FMC Weco® Butterfly Valve Catalog for more details and specifications.

Operators and Actuators:

Pneumatic ActuatorsPneumatic Actuators

 Double-acting or fail-safe spring return; 2 through 12-inch valve sizes

Recommended service:

Pneumatic actuator for on/off valve operation

Features: Mounts directly to Weco butterfly valves without special adapters or mounting hardware, Full 90° operation with a minimum of 30 psi air, no adjustments required.

Vane ActuatorVane Actuator

 Quarter-turn, double acting actuator; 2 through 6-inch valve sizes

Recommended service:

Compact, pneumatic actuator for on/off valve operation

Features: The only moving part, the vane, is cast integral to the shaft for sturdiness; does not require field lubrication, fully repairable in-line, Mounts directly to valve in any quadrant.

Gear OperatorsGear Operators

 Weatherproof, worm gear operator; 2 through 24-inch valve sizes

Recommended service:

Manual on/off or throttling services

Features: Operator has 90° travel arc with internal travel stop screws for a plus or minus 20° adjustment at either end of the travel, mounts on the valve in any quadrant, Chain wheel attachment available, and Hand-wheel shaft extensions available.

Standard HandleStandard Handle

 2 through 12-inch valve sizes

Recommended service:

Recommended for 8-inch valves and larger, manual on/off service

Features: Positive-stop gripper with integral locking lug ensures full open/full closed operation; Model 12 and 12N valves have a detent plate which bolts on the valve body in each of four quadrants; Model 22 and 22L valve have a pre-notched top flange with on/off detent positions.

Throttling HandleThrottling Handle

 2 through 12-inch valve sizes

Recommended service:

Recommended for 8-inch valves and larger, manual throttling service

Features: Notched detent plate and positive-stop gripper with integral locking lug ensures positive locking in any of 10 positions from full open or full closed operation, Detent plate bolts on the valve body in each of the four quadrants.

Download FMC Weco® Butterfly Valve 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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