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
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Product: Flanged End, Outside Screw and Yoke (OS&Y), Solid Wedge Gate Valve
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Seat Type: Bronze-to-Bronze Metal Seated (Metal-to-Metal)
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Operation: Handwheel (Manual)
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Visual Indication: Rising Stem (stem position shows open/closed status)
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Design Standard: BS 5150 / BS 5163 (Metal-seated variant)
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Ends: Flanged to BS 4504 / EN 1092-2
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Face-to-Face: BS 2089 or EN 558-1 Series 3 (short pattern)
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Test Standard: BS 6755 / EN 12266-1
2. Application
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Suitable for: Water, steam, oil, gas, and other non-aggressive fluids where metal-to-metal sealing is required.
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Temperature Range: -10°C up to +200°C (depending on packing and bronze alloy)
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Pressure Rating: PN10 / PN16 (specify as required)
3. Technical Parameters (Typical for DN200 PN16)
| Parameter | Value |
|---|---|
| Nominal Diameter | DN200 (8″) |
| Pressure Rating | PN16 (16 bar) |
| Shell Test Pressure | 24 bar |
| Seal Test Pressure | 17.6 bar (allowable leakage per ISO 5208 Rate D) |
| Working Pressure (max) | 16 bar at 120°C |
| Operating Temperature | -10°C to +200°C |
| Flange Drilling | BS 4504 / EN 1092-2 PN16 |
| Face-to-Face Length | 400 mm (EN 558-1 Series 3) |
(For other sizes, refer to Section 7.)
4. Materials of Construction
| Component | Material |
|---|---|
| Body | Cast Iron (EN-GJL-250 / BS 1452 Grade 250) |
| Bonnet | Cast Iron (EN-GJL-250) |
| Wedge (Gate) | Cast Iron with Bronze Seat Ring |
| Body Seat Ring | Bronze (machined and pressed / welded into body) |
| Stem | Stainless Steel (e.g., AISI 410 / 420 / 304) |
| Stem Nut | High Tensile Brass / Aluminium Bronze |
| Gland Packing | Graphite / PTFE (high temperature) |
| Gasket | Compressed Fibre or Graphite (between body and bonnet) |
| Bolting / Nuts | Carbon Steel / Stainless Steel (as required) |
| Handwheel | Malleable / Ductile Iron (painted or coated) |
5. Features
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Handwheel Operation: Simple and direct manual control; suitable for most general applications.
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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.
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Bronze Seated: Superior corrosion resistance and long service life in demanding fluids.
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Metal-to-Metal Sealing: Suitable for high-temperature fluids and where rubber seals are not compatible.
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In-Line Repairable: Packing can be replaced under pressure when the valve is fully open.
6. Dimensions & Weights (Reference Values – DN200 PN16 – Handwheel Operated)
| Dimension | Value (mm) |
|---|---|
| Face-to-Face (L) | 400 |
| Flange Diameter (D) | 340 |
| Bolt Circle Diameter (PCD) | 295 |
| Number of Bolt Holes | 12 |
| Bolt Hole Diameter | 22 |
| Stem Diameter | approx. 32 |
| Overall Height – Closed (H) | approx. 500 |
| Overall Height – Open (H1) | approx. 850 |
| Handwheel Diameter | approx. 400 |
| Weight | approx. 115 kg |
(For exact dimensions, refer to manufacturer’s certified drawing.)
7. Dimensions for Other Common Sizes (PN16) – Handwheel Operation – Reference Only
| DN | L (mm) | D (mm) | PCD (mm) | No. Bolts | Bolt Hole Ø | H (open) approx. | Handwheel Ø (mm) | Weight (kg) approx. |
|---|---|---|---|---|---|---|---|---|
| 50 | 250 | 165 | 125 | 4 | 19 | 400 | 180 | 18 |
| 80 | 280 | 200 | 160 | 8 | 19 | 550 | 200 | 32 |
| 100 | 300 | 220 | 180 | 8 | 19 | 620 | 250 | 42 |
| 150 | 350 | 285 | 240 | 8 | 23 | 780 | 300 | 75 |
| 200 | 400 | 340 | 295 | 12 | 23 | 850 | 400 | 115 |
| 250 | 450 | 405 | 355 | 12 | 28 | 1000 | 450 | 160 |
| 300 | 500 | 460 | 410 | 12 | 28 | 1150 | 500 | 215 |
| 400 | 600 | 580 | 525 | 16 | 31 | 1450 | 600 | 380 |
*(Face-to-face per EN 558-1 Series 3; flanges per EN 1092-2 PN16. For PN10 dimensions, consult supplier.)*
8. Handwheel Operation Details
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Type: Solid or fabricated malleable/ductile iron handwheel
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Finish: Painted (same as valve body) or epoxy coated
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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.
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Direction to Close: Typically clockwise (standard) – confirm with manufacturer if required.
9. Testing
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Shell Test: 1.5 x PN (24 bar for PN16) for duration per EN 12266-1
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Seat Test: 1.1 x PN (17.6 bar for PN16) with allowable leakage per Rate D (or tighter if specified)
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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
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Bronze Seated: Ensure the application does not require zero-leakage bubble tight shut-off; metal seated valves have allowable leakage per ISO 5208.
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Cast Iron Limitations: Avoid thermal shock or rapid temperature changes; not suitable for flammable or toxic fluids without specific approval.
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Visual Indication: The rising stem provides direct visual indication of valve position. No separate indicator is fitted.
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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).
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Flange Standard: Confirm whether BS 4504 (metric) or BS 10 (inch-based) is required.
11. Ordering Information
To ensure correct selection, please specify:
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Size (DN)
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Pressure Rating (PN)
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Flange Standard (e.g., BS 4504 PN16)
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End Use / Medium
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Any special test requirements
This data sheet is a guideline; always refer to the manufacturer’s certified drawings for exact dimensions and ratings.
