Wafer Butterfly Valve

Body:     QT, WCB, CF8M
Disc:      QT+Nylon coated, CF8, CF8M, 2507, 1.4462
Body style:    wafer type
Nominal diameter:    2″ – 80″ (DN50mm – DN2000mm)
Top flange:    ISO5211

    Category: Butterfly valve


    Wafer Butterfly Valve

    Wafer Butterfly Valve, the most reliable industrial solution for your needs. This valve features a cartridge type seat, streamlined disc and strong stem-to-disc connection, providing superior performance for many industrial applications such as food and beverage, pulp and paper, chemical, mining, water treatment, power plants etc. With ISO5211 top flange and stem square suitable for direct mounting of actuators as well as stem anti-blowout design to keep safety in field use; this valve is designed to perform at its best on the job. Furthermore it comes with a dirtscraper that prevents moisture penetrating into the shaft area while its multi-standard alignment holes are suitable for various standard of flanges of EN1092 PN10, PN16, ASME B16.5 CLASS150, JIS B2239 10K 16K & BS 10 table D & E. Suitable for high pressure and full vacuum service due to the use of a cartridge seat design; you don’t need any exposed pins or bolts for stem-to-disc connection nor do you need any flange gaskets meaning no risk of damage during installation in closed position. And with bubble tight shutoff at full pressure rating & large flow capacity thanks to the streamline disc design; this revolutionary valve is also equipped with plug O-ring sealing which eliminates any leakage from the stem. Get yours today and experience unmatched performance!

    Wafer concentric butterfly valve features a cartridge type seat, streamlined disc and strong stem-to-disc connection for easy use in many industrial applications such as food and beverage, pulp and paper, chemical, mining, water treatment, power plants, etc.

    1: Mount actuators directly with our valves’ ISO5211 top flange and stem square.
    2: Safety is our priority with the stem anti-blowout design on our valves.
    3: Keep moisture out with our valve’s dirtscraper to protect the shaft area.
    4: Versatility is key with our valves’ multi-standard alignment holes for various flange standards.
    5: Our valves are built to handle high pressure and full vacuum service thanks to their cartridge seat design.
    6: Secure stem-to-disc connection with no exposed pins or bolts on our valves.
    7: Say goodbye to flange gaskets – our valves eliminate the need for them.
    8: Install our valves in the closed position without risking damage.
    9: Achieve reliable shut-off at full pressure rating with our valves.
    10: Our valves have a large flow capacity and durable strength thanks to their streamlined disc design.
    11: No more worries about leakage – our valves feature a plug with O-ring sealing for a tight stem seal.

    butterfly valve size

    NO. Part name Material
    1 Body QT, WCB, CF8M
    2 Disc ASTM A536 65-45-12 Nylon coated, CF8, CF8M, 2507, 1.4462
    4 Stem SS420,SS431
    5 Lower Stem SS420,SS431
    6 Retalner Nylon for DN50-DN300, SS304 for DN350-DN2000
    7 Bearing RPTFE with Graphite on I.D.
    8 Weather seal NBR
    9 Nuts Stainless steel
    10 Plug Steel galvanized for DN50-DN300, Cover plate for
    DN350-DN2000 material same as body with SS304 bolts
    11 Screw SS304


    Body style wafer type
    Nominal diameter 2″ – 80″ (DN50mm – DN2000mm)
    Top flange ISO5211
    Operating pressure 16bar for DN50-DN300, 10bar for DN350-DN2000
    Temperature range -20 °C to + 140 °C (depending on pressure, medium and material)
    Flange end PN10,PN16, JIS5K 10K, ANSI 150LB
    Applications Potable Water, Wastewater, Seawater, HVAC
    Operation Hand lever, gear box, pneumatic actuator, electric actuator


    wafer butterfly valve


    What is a wafer-type butterfly valve?

    A wafer-type butterfly valve is a flow control device used in piping systems to regulate the amount of fluid that passes through. It consists of two semi-circular plates hinged together at a pivot point and connected by a stem, with an opening between them when closed and allowing unrestricted flow when open.

    The basic operation principle is fairly simple: When the disc or plate within the valve is rotated 90 degrees, it aligns with the pipeline and allows for full fluid flow; when it’s perpendicular to the line, it restricts or completely blocks off the passage of liquids or gases. As such, this type of valve can both stop and start liquid/gas flows as well as throttle back their speed. This makes them especially useful for applications involving frequent starts/stops or throttling down pressures (such as pumps).

    Wafer-type butterfly valves are available in different sizes depending on their intended application: from small 1/2-inch valves up to large 8-foot ones (or even larger). Additionally, they can be made from diverse materials such as cast iron, steel alloys, plastic composites etc., which further increases its range of use cases – from handling corrosive chemicals inside industrial plants to controlling steam pressure within boilers.

    In conclusion – Wafer Butterfly Valves offer easy installation due to its compact size & lighter weight compared others along with high Cv values; good leak tight shutoff along with wide rangeability making it suitable for various industrial needs depending on their size & material composition.

    What is the difference between lug type and wafer type butterfly valve?

    The difference between lug type and wafer type butterfly valves lies in their body design. Lug type butterfly valves typically consist of two main parts: a disk mounted on the spindle, and two lugs that attach to the pipe’s flange. The disk is held in place by the bolts that are threaded through the lugs. This type of valve is ideal for larger pipelines as it can handle higher pressures than a wafer valve due to its extra strength from the lugs attached to both sides of the flange.

    What are the three types of butterfly valves?

    Butterfly valves are a type of flow control device that is used to regulate the flow of air, oil, gas, water and other liquids or semi-liquids in various industrial applications. There are three main types of butterfly valves: concentric butterfly valve, eccentric butterfly valve and triple offset butterfly valve.

    Concentric Butterfly Valve: The concentric butterfly valve is the most common type of butterfly valve. It consists of a disc mounted on a shaft connected to an actuator. The disc has two holes aligned along its centerline so that when the actuator rotates it turns the disk to open or close one side at a time. As fluid passes through these holes, it creates pressure which causes the disk to move back and forth in order to regulate flow rate and pressure drop across this type of valve.

    Eccentric Butterfly Valve: An eccentric butterfly valve is slightly different than a concentric one as it uses an oblique profile for its disc instead of having two straight holes intersecting perpendicular to each other like in a concentric design. This helps reduce turbulence during operation by allowing more uniform flow through each hole as well as reducing noise during operation due to less interference between the two sides opening/closing simultaneously.

    Triple Offset Butterfly Valve: Triple offset designs offer superior sealing capability compared with either concentric or eccentric designs due to their unique geometry which eliminates almost all turbulence generated by passing fluid when opened or closed fully from start position evenly throughout 360 degrees rotation without any contact between inner parts (discs).