Butterfly Valve
  • Product: Butterfly Valve
  • Brand: Metalloy Pipe Fitting Inc.
  • Sizes: Refer the specification
  • Condition: New
  • Rating: 4.5, based on 52 reviews
  • Price: Start from 60 USD/unit (In Stock)
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A Butterfly valve is a quarter-turn rotational motion valve, that is used to stop, regulate, and start flow. Butterfly valves are easy and fast to open. A 90° rotation of the handle provides a complete closure or opening of the valve. Large Butterfly valves are usually equipped with a so-called gearbox, where the handwheel by gears is connected to the stem. This simplifies the operation of the valve, but at the expense of speed.We are an ISO 9001:2008,ISO 9001-2008, ISO 14001-2004, OHSAS 18001-2007, NSIC-CRISIL, EEPC, and QA-UKAS (ISO 9001-2008), SSI Certified company that follows total Quality Management System. and have been recognized as one of the world’s leading stockists and manufacturer of quality metals for over two decades and are committed to quick responses, unsurpassed quality, competitive pricing, reliable deliveries and an exhaustive inventory.


Type Butterfly valve
Standred API, ASTM, ANSI , DIN, BS, JIS ,ISO approved
Material Industrial-grade steel, carbon steel, stainless steel, alloy steel and special steel, A105, A182, F304, F316
Size DN25-1200 (1”-48”)
Diameter 1”to13”
Order Accept custom order


Construction of a Butterfly valve

Stoppage of flow is accomplished by the valve disk sealing against a seat that is on the inside diameter periphery of the valve body. Many Butterfly valves have an elastomeric seat against which the disk seals. Other Butterfly valves have a seal ring arrangement that uses a clamp-ring and backing-ring on a serrated edged rubber ring. This design prevents extrusion of the O-rings.


Advantages and disadvantages of Butterfly valve


• Quarter turn
• Open port
• Used with chemical or corrosive media
• Compact, lightweight design
• Available in large sizes
• Low pressure drop and high-pressure recovery
• High coefficient of flow


• Difficult to clean
• Difficulty with slurries
• Throttling limited to low differential pressure
• Potential for cavitation and choke
• Unguided disc movement is affected by flow turbulence


Butterfly valve Components

Butterfly valves have a unique body construction and motion when compared to other types of valves.


Body Construction

Butterfly valves get their name from the shape of the body and closure elements. They have a simple design that consists of fewer parts, making repair and maintenance easy.

• Valve body Butterfly valves have bodies that fit between two pipe flanges. There are two types of valve bodies, the lug type and the wafer type.
• The lug body has protruding legs that provide bolt holes matching those in the pipe flange. This style has metal inserts installed in the valve's bolt holes. The valve is installed between two flanges using a separate set of bolts for each flange. The advantage of the lug body style is it allows for dead-end service or removal of downstream piping.
• The wafer body style is installed between two flanges using bolts or nuts and studs. It does not have protruding legs. The shape is light-weight and has a lower initial and installation cost. However, some wafer body styles will not form a proper seal so care should be taken to avoid placing it between slip-on or screwed flange types. Wafer style valves are easier to replace and install.


Valve seat:

Most butterfly valves use an elastomeric seat and the disc seals against it. The seat utilizes an interference fit between the disc edge and the seat to provide shutoff. The flow is stopped when the valve disc seals against a seat on the inside diameter of the valve body. It may be bonded to the body or pressed or locked in. Other seal arrangements use a clamp-ring and backing-ring on a serrated edge rubber ring to block extrusion of the O-ring. In high-performance designs, the seal maybe provided by an interference-fit seat design of a line-energizes seat design. The seal is created by the pressure in the pipeline increasing the interference between the seat and disc edge. The seats of inexpensive valves may be molded into the body and cannot be repaired or replaced but in most precision valves the seats are repairable and replaceable.


Valve disc and stem assemblies:

Butterfly valves have separate stem and disc pieces that are fastened together by one of two methods. In the first method, the stem is secured with bolts or pins that go through the disc. The second method allows the disc to "float" and find its center in the seat by shaping the upper stem bore to fit a squared or hex-shaped stem. The second method of assembly can be used for corrosive applications because external stem fasteners are eliminated and covered discs can be used. The disc is held in position by the stem which must stand beyond the bottom of the disc to the bottom of the valve body. The seal is accomplished with an O-ring or standard stuffing box. The fluid in the system will come into contact with the seal so it is important to pick a steal durable enough for the media used in the system. Since the stem in most butterfly valves is protected from the media, the material can be selected with respect to cost and mechanical properties. However, in high performance types the stem is in contact with the media so the stem material must be compatible. The stem must also provide the required strength to seat and unseat the disc from the seat.


Packaging Of Butterfly valve

1.Hessian / PVC Cloth Bundles with PVC Box Strap or Hexagonal Bundles
2.Wooden Crate
3.Wooden Box made of treated wood or Plywood sheet
4.Bundles (hexagonal)
5.Crates (steel/wooden)
6.Special Crates


Application Of Butterfly valve

1.Food Industries
2.Water Industries
3.Oil & Gas Industries
4.Automotive Industries
5.Ship Building Industries
6.Petro-Chemical Industries
7.Engineering Cement Industries
8.Transport Industries-Rail and Road
9.Chemical & Pharmaceutical Industries
10.Construction Industries / Building Systems

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Reviews (52)

  • Harvey

    Nice products and service

    September 28, 2018, 11:50 am
  • Teresa

    September 20, 2018, 5:06 pm
  • Debby

    September 3, 2018, 10:08 pm
  • Cindy

    August 20, 2018, 7:59 am
  • Nicole

    August 1, 2018, 11:59 pm
  • Anonymous User

    July 10, 2018, 8:56 pm
  • Anonymous User

    July 2, 2018, 2:38 pm
  • Barry

    Got delivered excelent quality Butterfly Valve

    June 24, 2018, 6:29 pm
  • Olga

    June 17, 2018, 1:41 pm
  • Philippe

    Best service

    June 3, 2018, 1:21 pm
  • Vince

    November 16, 2017, 8:40 pm
  • Lorenzo

    October 21, 2017, 9:51 pm
  • Anonymous User

    July 23, 2017, 1:30 am
  • Anonymous User

    June 25, 2017, 6:49 pm
  • Anonymous User

    June 18, 2017, 7:06 am
  • Gaston

    May 6, 2017, 4:50 am
  • Joyce

    April 17, 2017, 10:30 pm
  • Maria

    February 22, 2017, 7:42 am
  • Irene

    Best service

    December 5, 2016, 1:06 pm
  • Aki

    November 26, 2016, 2:55 pm
  • Valerie

    November 22, 2016, 11:34 am
  • Iris

    November 19, 2016, 4:21 am
  • Otto

    October 11, 2016, 2:56 am
  • Kumiko

    September 21, 2016, 5:45 pm
  • Chiaki

    August 16, 2016, 8:24 am
  • Valerie

    April 9, 2016, 4:12 am
  • Ernesto

    February 7, 2016, 3:46 pm
  • Anonymous User

    December 11, 2015, 1:24 pm
  • Lorenzo

    November 14, 2015, 11:08 am
  • Gabielle

    October 29, 2015, 4:55 pm
  • Sandy

    best in the pipe industry

    October 10, 2015, 2:07 am
  • Anonymous User

    September 14, 2015, 6:37 pm
  • Nadine

    August 9, 2015, 6:48 pm
  • Asha

    May 29, 2015, 4:47 am
  • Teddy

    March 19, 2015, 8:29 pm
  • William

    The best deals for our Butterfly Valve

    January 23, 2015, 9:22 am
  • Michael

    December 17, 2014, 1:10 pm
  • Florence

    October 7, 2014, 10:00 pm
  • Erin

    best in the pipe industry

    September 4, 2014, 12:53 pm
  • Anonymous User

    May 2, 2014, 9:22 am
  • Claudette

    February 21, 2014, 9:25 am
  • Fabian

    The best deals for our Butterfly Valve

    January 16, 2014, 8:08 pm
  • Rene

    December 18, 2013, 1:53 pm
  • Beryl

    December 13, 2013, 5:12 am
  • Junko

    November 19, 2013, 8:42 pm
  • Debby

    November 11, 2013, 10:39 am
  • Sally

    October 30, 2013, 10:20 am
  • Bertha

    July 2, 2013, 6:36 pm
  • Prasad

    May 24, 2013, 1:59 pm
  • Jeanne

    May 6, 2013, 6:58 pm
  • Erika

    March 1, 2013, 12:12 am
  • Anonymous User

    Excellent service

    January 10, 2013, 12:13 am

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