DN200-PN16 Cast Iron Metal Seated Rising Stem Gate Valve

Description

Technical Data Sheet

Outside Screw and Yoke (OS&Y) Gate Valve – Bronze Seated, Handwheel Operated

1. General Description

• Product: Flanged End, Outside Screw and Yoke (OS&Y), Solid Wedge Gate Valve
• Seat Type: Bronze-to-Bronze Metal Seated (Metal-to-Metal)
• 手術： Handwheel (Manual)
• Visual Indication: Rising Stem (stem position shows open/closed status)
• 設計基準: BS 5150 / BS 5163 (Metal-seated variant)
• Ends: Flanged to BS 4504 / EN 1092-2
• 対面： BS 2089 or EN 558-1 Series 3 (short pattern)
• Test Standard: BS 6755 / EN 12266-1

2. 応用

• Suitable for: Water, steam, oil, gas, and other non-aggressive fluids where metal-to-metal sealing is required.
• 温度範囲: -10°C up to +200°C (depending on packing and bronze alloy)
• 圧力定格: PN10 / PN16 (specify as required)

3. Technical Parameters (Typical for DN200 PN16)

(For other sizes, refer to Section 7.)

4. Materials of Construction

5. 特徴

• Handwheel Operation: Simple and direct manual control; suitable for most general applications.
• Rising Stem (OS&Y): The stem rises as the valve opens, providing clear visual indication of the valve position (open or closed) without the need for an additional indicator.
• Bronze Seated: Superior corrosion resistance and long service life in demanding fluids.
• Metal-to-Metal Sealing: Suitable for high-temperature fluids and where rubber seals are not compatible.
• In-Line Repairable: Packing can be replaced under pressure when the valve is fully open.

6. Dimensions & Weights (Reference Values – DN200 PN16 – Handwheel Operated)

(For exact dimensions, refer to manufacturer’s certified drawing.)

7. Dimensions for Other Common Sizes (PN16) – Handwheel Operation – Reference Only

*(Face-to-face per EN 558-1 Series 3; flanges per EN 1092-2 PN16. For PN10 dimensions, consult supplier.)*

8. Handwheel Operation Details

• タイプ： Solid or fabricated malleable/ductile iron handwheel
• Finish: Painted (same as valve body) or epoxy coated
• Operation Torque: Designed for comfortable manual operation by a single person (for sizes up to DN300). For DN350 and above, consult factory regarding operating effort.
• Direction to Close: Typically clockwise (standard) – confirm with manufacturer if required.

9. テスト

• Shell Test: 1.5 x PN (24 bar for PN16) for duration per EN 12266-1
• Seat Test: 1.1 x PN (17.6 bar for PN16) with allowable leakage per Rate D (or tighter if specified)
• Optional: High-pressure seat test, low-pressure air test, or zero-leakage resilient seat tests available on request (not applicable to metal-seated valves).

10. Notes & Selection Tips

1. Bronze Seated: Ensure the application does not require zero-leakage bubble tight shut-off; metal seated valves have allowable leakage per ISO 5208.
2. Cast Iron Limitations: Avoid thermal shock or rapid temperature changes; not suitable for flammable or toxic fluids without specific approval.
3. Visual Indication: その rising stem provides direct visual indication of valve position. No separate indicator is fitted.
4. Operation Torque: For larger sizes (above DN300), consider whether a gear operator is required for ease of use (handwheel only may require high operating torque).
5. Flange Standard: Confirm whether BS 4504 (metric) or BS 10 (inch-based) is required.

11. Ordering Information

To ensure correct selection, please specify:

• Size (DN)
• Pressure Rating (PN)
• Flange Standard (e.g., BS 4504 PN16)
• End Use / Medium
• Any special test requirements

This data sheet is a guideline; always refer to the manufacturer’s certified drawings for exact dimensions and ratings.

保証:

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