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Butterfly Valve

Butterfly Valve

Butterfly Valve

Ultraweld Coat Pvt. Ltd. are renowned as the best Butterfly valve manufacturer in Pune. A butterfly valve is a type of quarter-turn rotational valve used to regulate the flow of liquids or gases through a pipe. It is named for its resemblance to a butterfly's wings due to the disc-shaped closure element inside the valve. Overall, butterfly valves are valued for their efficiency, space-saving design, and versatility, making them a popular choice for many fluid control applications. As a leading Butterfly valve suppliers in Pune, our material typically made from stainless steel, aluminum, or plastic, chosen based on the fluid's chemical and temperature characteristics.

Applications

Butterfly valves are ideal for compact and quick-isolation systems:

  • Compact Design: Ideal for applications with space constraints where other valve types are too bulky.
  • Lightweight Layout: Significant weight savings compared to other heavy valves like gate or globe valves.
  • Power Plants: Managing steam, cooling lines, and hot gas flows in generating units.
  • Quick Operation: Requires only a quarter turn to open or close, making it fast and highly efficient.

Advantages Of Butterfly Valve

Simple Design

A compact, lightweight profile makes installation easy and saves critical spatial footprint.

Cost-Effective

Requires fewer components, reducing initial investment and long-term maintenance costs.

Efficient Flow Control

Provides superb throttling and control capability for high-volume piping systems.

Key Features

High Temperature Tolerance
Corrosion and Abrasion Resistance
High Pressure Capability
Durability and Longevity
Leakage Control

Core Properties

Flow Regulation

Capable of precise flow control, though the exact control can vary depending on the valve design and application.

Disc Materials

Our disc material typically made from stainless steel, aluminum, or plastic, chosen based on the fluid’s chemical and temperature characteristics.

Mounting Options

Butterfly valves can be installed in different orientations and configurations, such as between flanges (wafer-type) or directly bolted (lug-type).

Concentric, double offset and triple offset

DesignSeatTypical use
ConcentricResilient liner; the disc is centred in the boreWater, air and other low-pressure utilities
Double offset (high performance)Polymer or metal; the disc lifts off the seat as it opensHigher pressures and temperatures, with less seat wear
Triple offsetMetal; a cone-shaped seating geometry with no rubbingSteam, hydrocarbons and high-temperature isolation

Each added offset moves the disc further off the seat during the turn, so the sealing faces touch only at the moment of closing. In a triple offset valve that makes a metal-to-metal seal practical, with tight shut-off and long seat life.

Wafer, lug or double flanged

  • Wafer: clamped between two pipe flanges; the lightest and most economical body.
  • Lug: threaded lugs bolt to each flange separately, so downstream piping can be removed while the valve holds pressure.
  • Double flanged: the usual choice for large diameters.

Disc and seat surfaces

In metal seated butterfly valves the disc edge and seat ring carry the sealing load. Hardfacing with Stellite or a tungsten carbide coating protects them against erosion, and precision grinding gives the geometry the seal depends on.

Butterfly valve or gate valve?

In large pipe sizes a butterfly valve is far shorter and lighter than a gate valve and opens with a quarter turn. A gate valve leaves the bore completely clear when open, which matters where the line is pigged or pressure drop must be minimal.

What to include in an enquiry

  • Design (concentric, double or triple offset), size and pressure class
  • Body style: wafer, lug or double flanged
  • Fluid, temperature and pressure
  • Disc, seat and body materials
  • Isolation or control duty, and actuation

Frequently asked questions

What does triple offset mean?

The shaft is offset from the seat plane, from the pipe centreline, and the seat cone is inclined. Together these let the disc swing clear of the seat, so a metal seat can seal without rubbing.

Can a butterfly valve regulate flow?

Yes. A butterfly valve regulates flow well and is widely used for throttling, particularly in large pipe sizes. Control is most effective in the middle of the disc’s travel; close to the shut position, a small movement of the disc causes a large change in flow.

Which body style allows removal of downstream piping?

A lug type butterfly valve. Its body has threaded lugs, and each pipe flange is bolted to the valve independently. The downstream piping can therefore be removed while the valve stays bolted to the upstream flange, provided the valve is rated for that dead-end service.

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