Cartridge Seat Wafer Concentric Butterfly Valve

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Technical Data Sheet

Cartridge Seat Wafer Concentric Butterfly Valve

1. General Description

• Product Type: Concentric Butterfly Valve, Wafer Type
• Design sedadla: Cartridge Seat (Replaceable, Metal-Reinforced Resilient Seat)
• Operace: Lever, Gearbox, Pneumatic Actuator, or Electric Actuator (ISO 5211 mounting pad)
• Standardní návrh: EN 593 / API 609 / ISO 10631 / MSS SP-67
• Osobní setkání: 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
• Teplotní rozsah: -40°C to +180°C (depending on seat material and pressure)
• Jmenovitý tlak: PN10/16, Class 150

2. Aplikace

• 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)

3. Technical Parameters (Typical Range)

4. Materials of Construction

5. Cartridge Seat Features & Benefits

The Cartridge Seat design is a key feature of this valve, offering significant advantages over conventional lined or booted seats.

6. Sealing Mechanism

• 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.

7. 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. *

*(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.)*

8. Testování

• 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).

9. Options & Accessories

• Operace: 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.

10. Standards & Certifications

11. Installation Notes (Wafer Type)

1. Centering: Wafer valves rely on the pipe flanges for centering. Ensure valve is centered between flanges before tightening bolts.
2. Gaskets: Cartridge seat acts as the gasket between flanges; no additional gaskets are required.
3. Dead-End Service: Not suitable for dead-end service. Wafer valves must be installed between two flanges.
4. Bolt Length: Use longer bolts to pass through both flanges and the valve body.

12. Ordering Information

To ensure correct selection, please specify:

• Typ ventilu: 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.

ZÁRUKA:

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