14″-125LB Cast Iron Metal Seated Rising Stem Gate Valve
Description
TECHNICAL DATASHEET
14″ 125LB Ductile Iron Rising Stem Gate Valve
Project / P.O. No.: ____________________
Tag No.: ____________________
Qty: ______ Units
1. General Specifications
| Item | Specification |
|---|---|
| Valve Type | Rising Stem Gate Valve (OS&Y) |
| Nominal Size | 14 inches (14″) / DN350 |
| Pressure Class | 125 LB (Class 125) |
| End Connection | Flanged Ends |
| Flange Standard | ASME B16.1 Class 125 (Cast Iron Flange, RF/FF) |
| Face-to-Face Dimension | MSS SP-70 / ASME B16.10 |
| Design & Manufacture Standard | MSS SP-70 |
| Test & Inspection Standard | API 598 |
2. Design Parameters
| Item | Unit/Standard | Parameter |
|---|---|---|
| Max. Allowable Pressure | psi | 200 psi @ Saturated Steam / 175 psi @ WOG (Non-Shock) |
| Service Media | – | Water, Oil, Gas (WOG) or Steam (depending on conditions) |
| Operating Temperature | °C / °F | -29°C to 220°C (-20°F to 430°F) |
| Operation | – | Handwheel / Gearbox (Recommended for this size) |
3. Material of Construction (M.O.C.)
| Part Name | Material Required | Standard / Grade (Ref.) |
|---|---|---|
| 1. Body | Ductile Iron (DI) | ASTM A536 (60-40-18) or ASTM A395 |
| 2. Bonnet | Ductile Iron (DI) | ASTM A536 |
| 3. Wedge (Gate) | Ductile Iron (DI) with Bronze seat face | ASTM A536, Bronze overlay/inlay on seat faces |
| 4. Seat Ring (Seat Face) | Bronze | ASTM B62 (C83600) or ASTM B61 |
| 5. Stem | Stainless Steel | ASTM A276 Type 410 / 304 / 316 |
| 6. Stem Nut | Bronze / Aluminum Bronze | High-strength wear-resistant alloy |
| 7. Packing | Flexible Graphite / PTFE | – |
| 8. Gasket | Non-asbestos fiber / Graphite | – |
| 9. Bolts/Nuts | Carbon Steel | ASTM A307 Grade B / A194 2H (Zinc plated) |
| 10. Handwheel | Ductile Iron / Malleable Iron | – |
4. Main Dimensions (Reference)
Note: Dimensions for reference only. Final dimensions to be verified per manufacturer’s drawing. (Unit: mm / inch)
| Description | Dimension (mm) | Dimension (inch) | Remarks |
|---|---|---|---|
| Face-to-Face (L) | 584 | 23.0 | Per MSS SP-70 / ASME B16.10 |
| Flange Diameter (D) | 470 | 18.5 | ASME B16.1 Class 125 |
| Bolt Circle Diameter (C) | 419.1 | 16.5 | ASME B16.1 Class 125 |
| Bolt Holes (n-ød) | 12-ø25.4 | 12-1.0″ | 12 holes |
| Flange Thickness (T) | 32 | 1.26 | ASME B16.1 Class 125 |
| Handwheel Diameter (W) | Approx. 500 | Approx. 19.7 | Varies by manufacturer; gearbox recommended |
| Top-to-Open Height (H) | Approx. 1100 | Approx. 43.3 | From stem top to handwheel (Reference) |
| Approx. Weight | 450 kg | 990 lbs | Estimated, varies by manufacturer |
5. Inspection & Testing (API 598)
| Test Description | Medium | Pressure (psi) | Requirement |
|---|---|---|---|
| Shell (Hydrostatic) | Water | 300 | No visible leakage |
| Seat (High Pressure) | Water | 220 | Leakage Rate: Class D (or as specified) |
| Backseat Test | Water/Air | As required | No visible leakage |
| Low Pressure Pneumatic | Air | 60 – 80 | Optional, leakage rate ≤ specified rating |
6. Options & Accessories
| Item | Options |
|---|---|
| Stem Upgrade | 17-4PH / Monel / Inconel / AISI 316 |
| Wedge Material | Full Stainless Steel / Nickel-Coated Ductile Iron |
| Operation | Gearbox (Recommended for 14″) / Electric Actuator / Pneumatic Actuator / Extension Stem |
| Flange Facing | Flat Face (FF) or Raised Face (RF) to match counter flange |
| Coating | Epoxy Coated (Blue RAL 5005 or Black), min. thickness 250μm per AWWA C550 |
| By-Pass | By-Pass Assembly (for pressure equalization) |
| Position Indicator | Rising stem provides visual indication; optional limit switch for actuated versions |
Notes / Remarks:
-
Pressure Rating: Class 125 per ASME B16.1 standard. Maximum allowable working pressure is 175 psi for WOG (Water, Oil, Gas) and 200 psi for saturated steam at ambient temperature.
-
Seat Design: Bronze seat faces are achieved by overlaying (welding) or inserting bronze rings on both body and wedge, ensuring corrosion resistance and long service life.
-
Stem Design: Outside Screw and Yoke (OS&Y) design isolates the stem threads from the media, allowing in-line maintenance and providing visual indication of valve position.
-
Gearbox Recommendation: Due to the large size (14″), a gearbox operator is strongly recommended for ease of operation and to reduce manual effort.
-
Applicable Standards: This datasheet is based on MSS SP-70 and ASME standards. Please confirm specific standard revisions and project special requirements before procurement.
Prepared by: __________________
Date: __________________
Approved by: __________________
Date: __________________
