- DN50~DN600
- 20 Bar for Class 150
- Double-Eccentric Sealing
- Force Sealed
- Low Pressure (Pn<2.5Mpa)
- -40~+400ºC
- Metal Hard Sealed
- Wcb, CF8, CF8m
- Rptfe, P287, Metal, Fire-Safe
- En558 Series 20, API609 Table5
Specification
DN150 CF8M Wafer Double Eccentric High-Temp Metal Hard Sealed Butterfly Valve
|
Connection |
Wafer /Lug |
|
Nominal diameter |
DN50-DN600 |
|
Max. working pressure |
Up to 50 Bar (Class 300) |
|
Standard working pressure |
20 Bar (Class 150) , 50 Bar (Class 300) |
|
Vacuum |
Full vacuum |
|
Face to Face |
API 609 Category B, Wafer & Lug |
|
Flange standard |
EN1092 PN10/16, ANSI Class150, JIS 10K/16K |
|
Top flange |
ISO 5211 |
|
Tightness check |
ISO 5208 Category 3, API 598 Table 5 |
|
Temperature range |
-40° C to +400° C (Depending on pressure, medium and material) |
|
Operation |
Hand level, gear box, pneumatic actuator, electric actuator |
Product Overview
I. Product Overview
Newway wafer high-performance butterfly valve is engineered for high-temperature industrial media, featuring a double-eccentric structure and metal hard sealing. Designed with a compact wafer connection, it balances lightweight construction with robust performance, handling gases, oil, and water in demanding environments. Constructed from durable materials (WCB, CF8, CF8M) and compliant with API 609 standards, it supports diverse actuation modes (manual, worm gear, electric, pneumatic) to meet shut-off and regulation needs across industrial, water, and energy sectors.
II. Key Attribute Parameters
Size Range: DN50~DN600 (2″~24″), covering small to large-diameter pipelines to Adapt to process loops, heating systems, and high-temperature transmission lines.
Pressure Rating: Class 150 (20 Bar) and Class 300 (50 Bar), suitable for low to medium-high pressure applications, with full vacuum compatibility.
Temperature Range: -40℃~400℃, with metal hard sealing maintaining stability across thermal cycles, ideal for high-temperature steam and industrial fluids.
Material Configuration:
Valve Body: Cast carbon steel (WCB), stainless steel (CF8, CF8M) for corrosion resistance, ensuring structural integrity under thermal stress.
Seal Surface: Metal hard sealing (alloy-coated) for wear resistance, with optional fire-safe designs to meet high-temperature safety requirements.
Stem: Extended design with anti-blowout structure, made of 316 stainless steel for strength and corrosion resistance.
Connection Type: Wafer or lug type, complying with EN 558 Series 20 and API 609 Table 5 face-to-face dimensions, enabling compact installation between pipeline flanges.
Operation Modes: Manual (hand lever), worm gear (reducing torque), electric, or pneumatic, with ISO 5211 top flange for standardized actuator mounting.
Standards Compliance: Design per API 609; flange standards per EN 1092 PN10/16, ANSI Class 150; testing per ISO 5208 Category 3 and API 598.
III. Structural Features
Double-Eccentric Design: Offset shaft and disc geometry reduce friction between sealing surfaces during operation, lowering torque by 30% compared to concentric valves. This minimizes wear, extending service life in frequent-use systems.
Metal Hard Sealing: Precision-machined metal sealing surfaces (Ra ≤1.6μm) achieve bubble-tight shut-off, resisting oxidation and deformation at 400℃—outperforming soft seals in high-temperature media like superheated steam.
Wafer Connection: Compact design eliminates flanges on the valve body, reducing weight by 40% versus flanged valves and saving installation space, ideal for tight-layout pipelines.
Anti-Blowout Stem: Integral one-piece stem with thrust ring prevents ejection under high pressure, enhancing operational safety in high-temperature and high-pressure systems.
Extended Stem & Insulation: Extended neck design allows for heat insulation, protecting actuators from high temperatures (over 300℃) and enabling flexible actuator mounting in any direction.