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China Suppliers Factory for Metal Seat Triple Eccentric Butterfly Valve - High Temperature Application, DN50-DN1200
Features
- Bubble-tight shut-off at full pressure rating
- At the slightest rotary motion, the seal is lifted off the body seat, which means that there is no transition from static to dynamic friction between the seat and plug.
- Standardized actuator flange for easy operator interchangeability.
- The control and shut-off butterfly valve can be used for both directions of flow.
- Hub seal provided by preloaded contact between flatted seat surface and disc hub area for positive sealing at all disc positions.
- Specially engineered seat sealing system adds to longer service life and lower operating torque.
- The valves have an extraordinarily long service life since they open and close almost without friction and mechanical initial breakaway torque.
- Universal Mounting Flange: The cast-in actuator flange is universally designed in accordance with ISO 5211 standard dimensions. The mounting flange can accommodate all types of operators such as: gear operators, electric actuators, and pneumatic actuators.
- The beveled conical seat geometry prevents friction, and thus wear and tear, when the valve is opened or closed. The initial breakaway torques are minimized. The large facing allows strictest leakage requirements to be met.
Materials Of Main Parts
| ITEM | PART NAME | MATERIAL |
|---|---|---|
| 1 | Body Material | CF8 / CF8M / CF3M / WCB Etc. |
| 2 | Seat Material | SS304+Graphite / PTFE / SS316+Graphite / SS304 Etc. |
| 3 | Stem Material | SS420 / SS410 / SS416 / SS316 / SS304 / Duplex Stainless Steel Etc. |
| 4 | Disc Material | WCB, CF8, CF8M, CF3M, Duplex SS, Al-Bronze Etc. |
| 5 | Gear Box | Ductile Iron / WCB |
| 6 | Packing | Graphite |
Valve Standard
| Category | Details |
|---|---|
| Type | Triple Eccentric Flanged |
| Face to Face | BS5155, EN558-1 Series 13, ISO5752 Series 13 Series 14 |
| Flange Drilling | EN1092 PN10 / PN16 / PN25 / PN40 / PN63 / JIS10K / ANSI150 / ANSI 300 |
| Mounting Flange | ISO5211 |
| Pressure Rating | PN10 PN16 PN25 PN40 PN63 150PSI 200PSI Class 150 Class 300 Class 600 |
| Application | HVAC, Water Supply & Sewage, Food & Beverage, Chemical / Petrochemical Processing, Power and Utilities, Paper and Pulp, Marine |
Dimensions (mm)
More Details
Frequently Asked Questions
Q
What is a triple eccentric butterfly valve and how does it differ from standard butterfly valves?
A triple eccentric butterfly valve features three geometric offsets in the disc and stem design, which eliminates friction between the seat and disc during opening and closing. Unlike standard butterfly valves, this design achieves bubble-tight shut-off at full pressure rating and greatly reduces wear, resulting in a significantly longer service life and lower operating torque.
Q
What pressure ratings are available for this triple eccentric butterfly valve?
The valve is available in a wide range of pressure ratings including PN10, PN16, PN25, PN40, PN63, 150PSI, 200PSI, Class 150, Class 300, and Class 600, making it suitable for a broad spectrum of industrial applications.
Q
What materials are available for the body, disc, and seat of the valve?
The valve body is available in CF8, CF8M, CF3M, and WCB. The seat can be made from SS304+Graphite, PTFE, SS316+Graphite, or SS304. The disc options include WCB, CF8, CF8M, CF3M, Duplex Stainless Steel, and Al-Bronze. Various stem materials such as SS420, SS410, SS416, SS316, SS304, and Duplex Stainless Steel are also available to meet different corrosion and pressure requirements.
Q
What types of actuators are compatible with this butterfly valve?
The valve features a universal mounting flange designed in accordance with ISO 5211 standard dimensions. It is compatible with all common types of operators including gear operators, electric actuators, and pneumatic actuators, allowing for easy interchangeability without modification.
Q
In which industries and applications can this valve be used?
This triple eccentric butterfly valve is suitable for a wide range of industries, including HVAC systems, water supply and sewage treatment, food and beverage processing, chemical and petrochemical processing, power generation and utilities, paper and pulp manufacturing, and marine applications.
Q
What international standards does this butterfly valve comply with?
The valve complies with multiple international standards. Face-to-face dimensions conform to BS5155, EN558-1 Series 13, and ISO5752 Series 13 & 14. Flange drilling follows EN1092 with options for PN10 through PN63 as well as JIS10K, ANSI150, and ANSI300. The mounting flange meets ISO5211 requirements.