Kata Valve (Group) Co., Ltd.
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Pneumatic RF Flanged Connection Stainless Steel Eccentric Butterfly Valve
Butterfly valve. Valves and are generally made of plastic or steel, the latter being the most widely used in chemical and petrochemical applications. Steel grades range from the most common type, namely carbon steel, with standard stainless steel being the second most common. Stainless steel alloys, which include nickel or copper are used in applications that require higher corrosion or heat resistance. In such cases, the most commonly used valve configurations -- ball valves, gate valves, check valves, globe valves and butterfly valves -- are often forged or cast as duplex valves, super duplex valves, alloy 20 valves, monel valves, inconel valves, incoloy valves and 254 SMO valves (6Mo valves). Titanium valves are also used in some highly corrosive applications. Titanium is not a stainless steel alloy.
Design: Seal on Body, Seal on Disc, High Performance – Double & Triple Offset.
Typical Applications: Gas Processing, Petrochemical, Chemical, Water & Sewage, Power and Mining.
End Connections: Wafer, Lugged and Double Flanged (ANSI & AS4087)
Pressure Class Range: ANSI Class 150 to 900, PN10 / PN16 / PN25 / PN40 / PN64
Sizes: DN50 to DN3600 (2” to 144”).
Body Materials: Carbon Steel, Stainless Steel, Cast Iron, Ductile Iron, PFA / PTFE Lined.
Seat & Seal Materials: Virgin PTFE, Reinforced PTFE, PFA, Viton, NBR, EPDM and Metal.
Accessories: Actuators, Limit Switchboxes, Solenoids, Extensions and Special Adaptions.
Quality: Pressure Tests – API 598, Fire Tests – API 6FA, API 607.
Standards: Design, Production and Testing: AS, ASME, ANSI, API, and ASTM. Quality System: EN ISO 9001:2008, EN ISO 14001:2004.
Design Details: A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve (quarter turn) which allows for quick shut off. Butterfly valves are generally favoured because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the centre of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position. The valve may also be opened incrementally to throttle flow.
| Size | NPS2"-48" |
| Pressure rating | Class 150~ Class 300 |
| Material | WCB WCC WC6 WC9 C5 C12 LCB LCC CF8 CF8M CF8 CF3 CF3M CN7M CF8C |
| Design & Manufacturing Standard | ASME B16.34,API609,BSEN 593 |
| Face to Face | NPS≤24” as per API609,NPS≥24” as per BSEN 593 |
| Flanged Dimension | ASME B16.5 ,ASME B16.47,BSEN 1092 |
| Test and Inspection | API 598,BSEN 12266 |
| Pressure-Temperature | ASME B16.34 |
| Structure Type | Centerline,Double eccentric |
| Operation Method | Manual,Worm Gear,Electric Actuator,Pneumatic Actuator,Gas over Oil Actuator |
Quality assurance system
1.Sclerometer
2.Universeal material testing machine
3.High speed analyzer
4.Chemical test
5.Electric analysis scales
6.Nde mt (magnetic powder) inspection
NDE UT (ultasonic) inspection
NDE PT (penetrate) inspecion
PMI spectrum analysis
Hydraulic pressure test
Cryogenic ball valve test
Fire-safe test
Certification
Our major products
Exporting is the dominant operation at Kaitai.In the process of KATA brand promotion and building up our distribution channels over the years and now has many satisfied and loyal customers.KATA is well recognized and its products are widely used in the oil and gas industry,power plant,boiler,metallurgy,pressure vessel,water supply and drainage and etc.