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Butterfly Valve • Industrial Flow Control

Double Acting Pneumatic Actuator Butterfly Valve

Butterfly Valve

Double Acting Pneumatic Actuator Butterfly Valve

Allied Engineering Butterfly valves can be operated with Double acting / single acting pneumatic actuator, with a limit switch and solenoid valve 230V AC or 24v DC. Our Butterfly valves are widely used in automatic /automation plants in water, process industries, and marine for chemical and corrosive duties. We offer a range of valves specially designed for pharmaceuticals, foods & beverages.

We manufacture valves from genuine guaranteed raw material with material test certificates, hydraulic test certificates, and Mill TC 3.1.b available with all supplies. Also, we can provide valves with third party inspection agencies.

Size Range 25 NB TO 1500 NB(1″ to 60″)
Pressure Rating Max 225 PSIG
Design Standard BS 5155
Testing Standard BS 6755/BS 5155

Technical Specifications & Metallurgy

Certified Standards
Allied Engineering's Butterfly Valve Pressure Rating PN 10, PN16 & PN25 with PNEUMATIC ACTUATOR OPERATION
BODYIS 210 GR FG 200/220/CS ASTMA 216 GR WCB /SG IRON/ SS 304 / SS 316
DISCIS 210 GR FG 200/220/CS ASTMA 216 GR WCB/SG IRON/ SS 304 / SS 316
SEATMOLDED/REPLACEABLE NITRILE/EPDM/SILICON/VITON / HYPOLON
SHAFTAISI 410 /AISI 304/AISI 316
MFG STDBS 5155
INSP &TEST STDBS 6755/BS 5155
OPERATIONFLOW –CONTROL LEVER / GEAR OPERATED/ PNEUMATIC ACTUATOR/ELECTRIC ACTUATOR
ENDSWAFER TYPE TO SUIT ANSI B 16.1
HYD TEST PRESSREBODY:225 PSIG (16 KG/CM2)] SEAT: 165 PSIG (11.5 KG/CM2)
SIZE RANGE25 NB TO 1500 NB(1″ to 60″)

What is a Lug Type Butterfly Valve?

A Lug Type Butterfly Valve is a versatile flow control valve fitted with threaded lugs on its body, allowing it to be bolted into a pipeline independently on either side, suitable for dead-end service where downstream piping can be removed without affecting the valve. Available in Cast Iron, Cast Steel, SS 304, SS 316, and Ductile Iron body options, with pressure ratings up to PN 25, built for sizes 15mm to 300mm. Explore our Butterfly Valve range or compare with our Wafer Type Butterfly Valve .

Key Features of Lug Type Butterfly Valve

  • Lugged body design for dead-end service capability
  • Body: Cast Iron, Ductile Iron, Cast Steel, SS 304, SS 316
  • Disc & stem: SS/S.G. Iron in 410, 304, or 316 grades
  • Seat & seal options: Nitrile, PTFE, Teflon, Viton
  • Manufactured to BS 5155, tested to BS 6755
  • Operation: Lever or Gear
  • Pressure rating: PN 10, PN 16, PN 20, PN 25
  • Size range: 15mm to 300mm

Applications of Lug Type Butterfly Valve

Suited for dead-end service or single-sided pipe isolation, including water treatment and process piping where flexibility to remove downstream sections is valuable.

Benefits of Lug Type Butterfly Valve

  • Threaded lugs allow bolting from either side independently
  • Supports dead-end service, unlike standard wafer-type valves
  • Broad body and disc material options suit varied conditions
  • Multiple seat/seal choices allow chemical compatibility
  • Lever and gear operation options suit different control needs

Working of Lug Type Butterfly Valve

The valve’s disc rotates on a central stem within the lugged body to control flow. In the open position, the disc aligns with the pipe bore for minimal flow resistance. To close, the disc rotates a quarter-turn, sealing firmly against the replaceable seat. Because the body has threaded lugs instead of through-bolts, either side of the pipeline can be unbolted and removed for maintenance while the valve stays securely fixed to the other side — a key advantage over standard wafer-type designs.

Why Choose Allied Engineering?

Allied Engineering manufactures Lug Type Butterfly Valves with a wide choice of body materials, seat options, and end connections to suit diverse applications. With BS 5155 compliance, consistent quality standards, and years of industry experience, we deliver valves built for dependable, long-term performance.

Explore our Butterfly Valve range , or Get a Quote today.

Custom Engineering & Sizing

Need a Custom Port, High-Temp Trim, or Third-Party Inspection?

Our technical valve engineers provide 3D CAD drawings, material test certificates (EN 10204 3.1), and rapid fabrication quotes for project requirements.

Request Project RFQ
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