BUTTERFLY VALVE KITZ PDF

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KITZ butterfly valves are available in a variety of body materials and seat combinations ready to meet our customers' needs. Oil-free specification is also available. All valve types are available with pneumatic or electric actuators and can be automated.

The DJ-series is a ductile butterfly valve using molded-in bonded seat structure. The UB-series incorporates stainless steel manufacture for vital elements and double eccentric construction. Long neck type short neck type and neckless type are available for versatile applications.

Optionally available NECK Mounting Kits enable easy change of valve necks to other type, depending on service conditions: Valves need to be dismantled from pipelines for neck replacement. Light weight of die-cast aluminum valve body which is only one-thirds of KITZ's conventional cast iron butterfly valves eases valve-to-flange centering work on mounting valves on pipelines. Austenitic stainless steel discs and EPDM rubber seats can handle many different kinds of line fluid without concern of corrosion.

A pair of stem bearing assembled around the top and bottom stems prevents stem galling, and stabilizes valve operating torque for smooth and trouble-free disc rotation.

The actuator mounting pads of all necks are designed in conformity with ISO requirements for direct on-site mounting of actuators which are provided with ISO valve mounting flanges. Prevention of dew condensation Long neck type :. Along stainless steel neck blocks transfer of the fluid heat to a valve operating device, which thus needs no insulation. Dew condensation is minimized also in case of cold water service.

Main parts such as stems, discs, necks, neck connectors and boltings are all made of stainless steel for highly graded rust prevention. S-shape spherical disc for high sealing performance patented :. KITZ's original cross-sectionally S-shaped valve discs with spherical surface evenly make tight contact with rubber liners for excellent sealing performance with reduced operating torque. The S-shape disc offers an improved seal patented design. When the valve is closed with light torque, the entire face contacts the seat evenly, providing a superior seal.

The simultaneous full circumference shutting feature has also contributed to significant improvement in seat durability. Molded-in bonded seat structure is employed for size 2" to 12". Larger sized valves are provided with replaceable seat.

It also guarantees peel-free valve mounting on pipelines. Vacuum service is option for size 14 and larger. Rubber seats are spherically designed where they contact top and bottom stems. This protects widely designed rubber seats from peeling or deformation for prolonged service life of valves.

Thinly streamlined metal discs are the results of elaborate laboratory study to ultimately minimize the pressure loss. Choice among 4 disc and 2 seat materials and manual, pneumatic or electric valve operating devices makes service applications highly versatile. Any pneumatic or electric valve actuators provided with ISO valve mounting flanges can be easily mounted for actuation of valves in the field.

Low operating torques are designed low for extension of valve service life and economic consideration in selection of valve operating devices.

Designed much lighter than our conventional series for operation efficiency in piping. Prevention of external fluid leakage is maximized with a rubber O-ring assembled around the top stem and tight contact between spherically designed rubber seat and spherically designed top and bottom end of the disc. The valves stem is designed eccentric to both the center of the seat ring by X and the center of the valve body by Y , which makes the clearance C between the seat ring and the disc seat surface on its fully open position Fig.

All these help minimize frictional wear of seat rings and reduce the valve operating torque considerably. Seat rings are made of PTFE with stainless steel supporter.

Furthermore, double-eccentric kinematics relieve seat ring from damage or wear which is a rather usual problem of conventional butterfly valves, This makes the service life twice as long as rubber seated butterfly valves. There is a room between the gland and the lever or gear to allow retightening of gland boltings without trouble of disassembly of the lever or gear during plant operation.

Three neck designs for your choice : Long neck type short neck type and neckless type are available for versatile applications. Easy valve-to-flange centering : Light weight of die-cast aluminum valve body which is only one-thirds of KITZ's conventional cast iron butterfly valves eases valve-to-flange centering work on mounting valves on pipelines. Wide range of service applications : Austenitic stainless steel discs and EPDM rubber seats can handle many different kinds of line fluid without concern of corrosion.

Stabillzed operating torque : A pair of stem bearing assembled around the top and bottom stems prevents stem galling, and stabilizes valve operating torque for smooth and trouble-free disc rotation.

On-the-spot actuator assembly : The actuator mounting pads of all necks are designed in conformity with ISO requirements for direct on-site mounting of actuators which are provided with ISO valve mounting flanges. Prevention of dew condensation Long neck type : Along stainless steel neck blocks transfer of the fluid heat to a valve operating device, which thus needs no insulation. Rust prevention : Main parts such as stems, discs, necks, neck connectors and boltings are all made of stainless steel for highly graded rust prevention.

S-shape spherical disc for high sealing performance patented : KITZ's original cross-sectionally S-shaped valve discs with spherical surface evenly make tight contact with rubber liners for excellent sealing performance with reduced operating torque. Non-peeling Seat-to-body Construction Molded-in bonded seat structure is employed for size 2" to 12". Spherical design for Discs and Seats Rubber seats are spherically designed where they contact top and bottom stems.

Choice of Materials and Operating Devices Choice among 4 disc and 2 seat materials and manual, pneumatic or electric valve operating devices makes service applications highly versatile. Integral ISO Actuator Mounting Flange Any pneumatic or electric valve actuators provided with ISO valve mounting flanges can be easily mounted for actuation of valves in the field.

Low Valve Operating Torque Low operating torques are designed low for extension of valve service life and economic consideration in selection of valve operating devices. Light-designed for Operation Efficiency Designed much lighter than our conventional series for operation efficiency in piping. Emission-free Stem Sealing Mechanism Prevention of external fluid leakage is maximized with a rubber O-ring assembled around the top stem and tight contact between spherically designed rubber seat and spherically designed top and bottom end of the disc.

Dew condenstation prevention Dew condenstation prevention type is optionally available with heat. Double-eccentric kinematics The valves stem is designed eccentric to both the center of the seat ring by X and the center of the valve body by Y , which makes the clearance C between the seat ring and the disc seat surface on its fully open position Fig. Retightening of gland packing There is a room between the gland and the lever or gear to allow retightening of gland boltings without trouble of disassembly of the lever or gear during plant operation.

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KITZ Butterfly Valves

It will be recommended to update your OS and browser to latest version. A wide variety of standard and configurable components for factory automation engineers in industries such as automotive, semiconductor, packaging, medical and many more. A good selection of accessories such as screws, bolts, washers and nuts that you may need for your daily engineering usage. Browse industrial materials ranging from heat insulating plates, sponges, to metal and plastic materials in different sizes to meet your various applications. A wide variety of wiring parts for connecting and protecting control and PC parts including Connectors, Cables, Electric Wires, Crimping Terminals and more.

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