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    Butterfly Valves



    Butterfly Valves

    Winnellie Valve & Process stocks butterfly valves in various designs and materials suitable for a range of applications these include:

    • Wafer, lugged and fully flanged
    • Concentric
    • Single offset
    • Double offset
    • Triple offset
    • Firesafe
    • Soft and metal seat
    • Cryogenic

    Butterfly Valves

    At Winnellie Valves, we carry an extensive collection of quality butterfly valves in a range of design types to suit all applications. If you’re looking to buy the most comprehensive range of butterfly valves in Australia, you need look no further than our premium collection.

    Keen to see our full product listing? Along with our extensive collection of premium valves, we also stock a range of quality process solutions — view our full product range today. Need some help finding the best butterfly valves online for your needs? No problem. Simply get in touch with our expert team — we’d be more than happy to help.


    What is a Butterfly Valve?

    Butterfly Valves are a family of quarter-turn valves that isolate or shut off the flow of a liquid medium in pipelines. The closing mechanism comes in the form of a rotational disc. Lightweight, compact, and simple by design, butterfly valves are intrinsic to industrial processes to provide both bi-directional flow and shut-off capabilities.  Having fewer moving parts, butterfly valves are popular because they have low installation costs, fewer wear parts and are light in weight.

    How does a Butterfly Valve work?

    The “butterfly” is a disc connected to a stem. When the shaft rotates, it closes the disc by a quarter-turn perpendicular to the direction of the flow. If you require training options for butterfly valves or any other associated products, get in touch with one of our valve and process experts today.

    How long will my Butterfly Valve last?

    Butterfly valves can be made using a wide range of materials such as stainless steel, cast iron, ductile iron PVC or FIP thermoplastics, depending on what they are required for. For this reason, the better (and usually more expensive) material used to create the valve, the longer it will last. Another rule of thumb is the more offsets the valve has, the longer it will last. To find out how long your butterfly valve will last in operation, it’s best to contact the manufacturer direct, or a valve expert who can give you a guide to its lifespan and when you should look to replace it.

    How do I install a Butterfly Valve?

    Installing a butterfly is fairly straightforward, however there are a few things you should inspect before and during installation.

    • Ensure your working conditions such as safety, pressure and temperature are within the capacity range for the valve being installed.
    • Double check that the material of the valve is of a compound compatible with the type of media flowing through the pipeline.
    • Make sure the valve flange end and the mating flanges are clean and do not have any defects

    Install the lever or hand-wheel and turn clockwise to ensure the valve is fully closed. The disc itself should be aligned parallel to the ends. If it doesn’t seem aligned parallel to the ends (for a lever operated valve) loosen the top plate slightly by loosening the attached bolts and turn the lever clockwise again until the disc is properly centred and parallel, then re-tighten the top plate. After ensuring the pipe flange faces are void of any foreign materials, insert the product between the flanges while the disc is in the closed position. Slowly open the valve and close it again to see if the operation is unobstructed and then tighten the flange bolts. Pressurise the system to see if there are any leaks, and, if not, your product is installed correctly.

    What is a Butterfly Valve used for?

    Butterfly valves are used across a wide range of applications. The more common purposes of butterfly valves include cooling water, air, gases and fire protection applications.

    What warranty do I get?

    Warranties will vary between manufacturers. It’s always best to ask your supplier about warranty options, as well as servicing and repair. There’s no worse feeling than realising too late that a vital part is not working as it should or breaks unexpectedly. If your business requires high-pressure and process valves in both light and heavy industry, contact a Winnellie Valves and Process valve expert to see how they can help with all your valve and process requirements.

    What are the advantages of Butterfly Valves?

    Due to their wafer design they are ideally suited to applications requiring large diameter valves such as the water industry or where weight is a significant consideration such as offshore platforms and ships. Butterfly valves are widely used in low pressure / temperature water applications in the oil and gas, mining, petrochemical, chemical and marine industries because of how easy they are to operate, they can be quickly opened and shut off as you only need to do a quarter-turn to fully open or close the valve.

    How many types of Butterfly Valves are there?

    Similar to a ball valve, butterfly valves come in three specific designs dependent on the level of performance required. Concentric, double offset (eccentric) and triple offset (eccentric). Each design provides different levels of sealing capabilities. The first offset offers continuous sealing, while the double offset allows the valve to open with minimal friction, increasing its durability. The triple offset butterfly valve has three offsets located in different positions.

    Do Butterfly Valves have a flow direction?

    Butterfly valves are bi-directional, however they do have a preferred flow direction. It’s strongly recommended that the valves are installed in the preferred flow direction as this will extend the valve’s life span and will also lower the operating torque.

    Butterfly Valves

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    Jutta TilleryJutta Tillery
    14:34 02 Apr 22
    Excellent customer service, kept us updated throughout the delivery process really looking forward to doing business with Waltan Tools again soon
    Daniel and ScottDaniel and Scott
    12:02 29 Jun 21
    We have done business with Winnellie Hydraulics on numerous occasions and find them to always be nothing but professional, honest and reliable.Their customer service is excellent and they are always a pleasure to work with. We would highly recommend Winnellie Hydraulics and we look forward to continuing business with Max and the team in the up and coming future.
    Damien PedersenDamien Pedersen
    06:23 15 Feb 21
    Winnellie Hydraulics are up most professional and I am always impressed with the service offered and provided. The team at Winnellie Hydraulics are highly skilled, innovative and ever reliable. They continue to be the Territory’s leading service specialists within the fields of the hydraulic and pneumatic services and solutions. The team have a broad range of knowledge in hydraulic, pneumatic, hose management and products across a extensive range of divisions. The team at Winnellie Hydraulics are easy to work with and really appreciate their customers and strive for continuous business improvement.
    Rob NorthRob North
    07:53 10 Feb 21
    Efficient, professional and dedicated. The team at Winnellie Hydraulics are a pleasure to work with and are customer service specialists.Max and the team have taken on many challenges to assist with emergent scopes at our onshore facility in Darwin. They go above and beyond to meet the timeline required without missing a beat on quality.I highly recommend dealing with them and look forward to future business.Thanks guys
    Darren SteeleDarren Steele
    02:59 07 Feb 21
    For all your Hydraulic & Pneumatic needs, Winnellie Hydraulics has you covered.Max and the team run a great operation that supports the Oil & Gas and Mining industries.With great brands supporting them, they are truly the one stop shop for all your engineering needs.
    Dipak NandDipak Nand
    23:06 04 Feb 21
    The team at Winnellie hydraulics, is great to work with, they understand our priority and service delivery to our Defence clients, No job too small or big and delivering of high quality products and service. Also really easy to deal with in regards to faults/ warranty and SME service . Highly recommended to use.
    Darren UptonDarren Upton
    22:54 04 Feb 21
    Winnellie Hydraulics are a Parker PPD for the NT which means they have full access to all Parkers Hannifin products & our local Engineering team in Australia who can work with Winnellie on any projects where clients needs are meet using Parkers products & their insulation experience
    Ben TilbrookBen Tilbrook
    07:35 04 Feb 21
    Outstanding commitment to their customers, in my experience there isn’t anything that is too hard for this mob. Always prepared to find solutions to their customers now matter how big or small the request. A great family business who take pride in providing product and service.
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