Sự miêu tả
Technical Data Sheet
Cartridge Seat Wafer Concentric Butterfly Valve
- General Description
- Product Type: Concentric Butterfly Valve, Wafer Type
- Thiết kế ghế: Cartridge Seat (Replaceable, Metal-Reinforced Resilient Seat)
- Hoạt động: Lever, Gearbox, Pneumatic Actuator, or Electric Actuator (ISO 5211 mounting pad)
- Tiêu chuẩn thiết kế: EN 593 / API 609 / ISO 10631 / MSS SP-67
- Đối mặt trực tiếp: EN 558 Series 20 / API 609 Table 1
- Flange Drilling: EN 1092-2 PN10/16, ASME B16.5 Class 150, JIS B2220
- Test Standard: EN 12266-1 / API 598 / ISO 5208
- Phạm vi nhiệt độ: -40°C to +180°C (depending on seat material and pressure)
- Xếp hạng áp suất: PN10/16, Class 150
- Ứng dụng
- Suitable Media: Water, air, oils, gases, weak corrosive liquids, vacuum services
- Typical Industries: Water treatment, HVAC, chemical processing, marine, food and beverage, pulp and paper
- Installation: Must be clamped between two pipe flanges (wafer design does not have threaded inserts for dead-end service)
- Technical Parameters (Typical Range)
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Tham số
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Đặc điểm kỹ thuật
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Đường kính danh nghĩa (DN)
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DN50 – DN600 (larger sizes available up to DN2000)
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Xếp hạng áp suất
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PN10 / PN16 / Class 150
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Shell Test Pressure
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1.5 x PN (e.g., 24 bar for PN16)
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Seat Test Pressure
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1.1 x PN (e.g., 17.6 bar for PN16)
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Leakage Rate
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Zero Leakage (Bubble Tight) – ISO 5208 Rate A / ANSI Class VI
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Operating Temperature
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-40°C to +180°C (dependent on seat elastomer)
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Vacuum Service
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Suitable for full industrial vacuum
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Flow Characteristic
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Approximately linear, low pressure drop
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Direction of Flow
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Bi-directional
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Mounting Flange
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ISO 5211 top flange for direct actuator mounting
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- Materials of Construction
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Thành phần
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Material Options
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Ghi chú
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Thân hình
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Ductile Iron (GGG40/GGG50) / Cast Iron / Carbon Steel (WCB) / Stainless Steel (CF8/CF8M)
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Wafer design – shorter body length, centering lugs for alignment
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Đĩa
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Stainless Steel (CF8/CF8M/316) / Ductile Iron with Nylon Coating / Bronze
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Streamlined design for high Cv
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Thân cây
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Stainless Steel (416/304/316/420) / 17-4PH
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One-piece thru-shaft design, anti-blowout
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Seat (Cartridge Type)
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Composite Construction:
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Modular design with metal reinforcement ring
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– Sealing Material: EPDM / NBR / Viton / PTFE
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Encapsulated rubber or PTFE
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– Support Ring: Stainless Steel / Phenolic
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Prevents extrusion and deformation
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Bushings / Bearings
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PTFE / Bronze / Reinforced PTFE
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Low friction, absorbs side thrust
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Stem Seals
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O-Rings (EPDM/NBR) + Dirt Wiper
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Multiple sealing, prevents external contamination
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- Cartridge Seat Features & Benefits
Các Cartridge Seat design is a key feature of this valve, offering significant advantages over conventional lined or booted seats.
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Feature
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Benefit
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Modular / Pre-Assembled Design
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Seat is a self-contained unit (sealing material bonded to a rigid metal/phenolic ring).
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Field Replaceable
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Seat can be replaced without removing the valve body from the pipeline. Only the disc and stem need to be removed.
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Metal-Reinforced Construction
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Stainless steel or rigid backing ring prevents seat distortion, deformation, and blowout under high pressure, vacuum, or thermal cycling.
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Consistent Low Torque
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Seat dynamics are not dependent on flange compression. Provides uniform, low operating torque throughout valve life.
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Extrusion Resistance
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Rigid support ring eliminates seat extrusion into the flow path, extending service life (up to 10x longer than standard seats).
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Isolation of Body/Stem
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The cartridge seat completely isolates the valve body and stem from the line media, preventing corrosion of metal parts.
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- Cơ chế niêm phong
- Primary Seal: Formed by preloaded contact between the precision-machined disc hub and the flatted sealing surfaces of the cartridge seat.
- Secondary Seal: Achieved by an engineered interference fit of the stem through the seat, providing additional sealing integrity around the shaft.
- Dimensions & Weights (Reference Values – Wafer Type, PN16)
*Note: Dimensions vary by manufacturer. The following are based on industry standards (EN 558 Series 20). Wafer bodies are shorter than lugged bodies. Request certified drawing for exact dimensions. *
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DN (mm)
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L (Face-to-Face) mm
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D (Flange Dia.) mm
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H (approx. open) mm
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Body Length (L1) mm
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Weight (approx.) kg
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50
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43
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165
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150
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32
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2.5
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65
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46
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185
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165
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32
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3.2
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80
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46
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200
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180
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32
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4.5
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100
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52
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220
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210
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37
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6.0
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125
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56
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250
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235
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41
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8.0
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150
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56
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285
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260
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41
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9.0
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200
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60
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340
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310
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46
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15.0
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250
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68
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405
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360
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51
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24.0
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300
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78
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460
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420
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56
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35.0
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350
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78
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520
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470
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56
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48.0
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400
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102
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580
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520
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60
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72.0
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450
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114
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640
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570
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67
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98.0
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500
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127
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715
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620
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70
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125.0
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600
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154
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840
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740
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80
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195.0
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*(Note: Body length (L1) is shorter for wafer style; weight is typically 10-15% less than lugged version due to absence of threaded inserts and shorter body.)*
- Kiểm tra
- Shell Test: 1.5 x rated pressure – No visible leakage.
- Seat Test: 1.1 x rated pressure (bi-directional) – Bubble tight shut-off (Rate A).
- Vacuum Test: Suitable for full vacuum service (e.g., 0.08 MPa).
- Options & Accessories
- Hoạt động: Hand lever (with infinite positioning), Worm Gearbox (with handwheel), Pneumatic Actuator (double-acting or spring return), Electric Actuator.
- Position Indication: Mechanical visual indicator, limit switch boxes, positioners.
- Stem Extension: For buried or insulated lines.
- Anti-Static Device: Per ISO 5211.
- Fire-Safe Design: Optionally available to API 607.
- Standards & Certifications
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Loại
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Tiêu chuẩn
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Thiết kế van
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ISO 10631 / EN 593 / API 609 / MSS SP-67
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Đối mặt
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EN 558 / API 609 / ISO 5752
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Flange Connection
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EN 1092-2, ASME B16.5, JIS B2220
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Top Flange
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ISO 5211
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Kiểm tra
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EN 12266-1, API 598, ISO 5208
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Potable Water
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WRAS / KTW (for EPDM seats)
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Fire Safety
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API 607 (Optional)
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- Installation Notes (Wafer Type)
- Centering: Wafer valves rely on the pipe flanges for centering. Ensure valve is centered between flanges before tightening bolts.
- Gaskets: Cartridge seat acts as the gasket between flanges; no additional gaskets are required.
- Dead-End Service: Not suitable for dead-end service. Wafer valves must be installed between two flanges.
- Bolt Length: Use longer bolts to pass through both flanges and the valve body.
- Ordering Information
To ensure correct selection, please specify:
- Loại van: Wafer Concentric Butterfly Valve with Cartridge Seat
- Size (DN / Inch)
- Pressure Rating (PN / Class)
- Seat Material (EPDM, NBR, Viton, PTFE)
- Disc Material (SS304, SS316, etc.)
- Body Material (Ductile Iron, Carbon Steel, etc.)
- Operation Required (Lever, Gearbox, Actuator)
- Flange Standard (EN 1092-2, ASME B16.5, etc.)
- Any Special Requirements (Fire-safe, Anti-static, etc.)
This data sheet is a guideline based on standard industry practice for cartridge seat wafer concentric butterfly valves. Always refer to the manufacturer’s certified drawings for exact dimensions and ratings.
CAM KẾT:
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