30″-600LB 3-Piece Trunnion Mounted Ball Valve
Description
Technical Data Sheet
3-Piece Trunnion Mounted Ball Valve
Project/Item: 3-Piece Fixed Ball Valve
Valve Size: 30 inches (DN750)
Pressure Rating: 600LB (Class 600)
Model: Q347F-600Lb (Example, confirm with manufacturer)
1. General Information
| Item | Technical Parameter | Remarks |
|---|---|---|
| Valve Type | 3-Piece Trunnion Ball Valve | Side Entry, Bolted Bonnet Construction |
| Nominal Bore | 30 inches (DN750) | Full Bore Design |
| Pressure Class | 600 LB (Class 600) | Corresponds to PN100 |
| Connection Type | Flanged Ends (RF) | Raised Face Flanges per ASME B16.5 |
| Operation Type | Worm Gear Operator | Essential for high-pressure/large bore valves |
| Design Standard | API 6D / ASME B16.34 | Pipeline valve design specification |
| Face-to-Face | ASME B16.10 | For RF flanged ends |
| Flange Standard | ASME B16.5 | Flange dimensions and drilling |
| Inspection & Test | API 598 | Pressure test standards |
2. Main Technical Parameters & Performance
| Item | Technical Parameter | Remarks |
|---|---|---|
| Shell Test Pressure | 15.3 MPa (2220 psi) | Hydrostatic, ambient temperature (Increased for 600LB) |
| High-Pressure Seal Test | 11.2 MPa (1625 psi) | Hydrostatic, ambient temperature (Increased for 600LB) |
| Low-Pressure Seal Test | 0.5 – 0.7 MPa | Air or Nitrogen |
| Temperature Range | -29°C ~ +200°C | Depends on seat material selection (e.g., PTFE) |
| Applicable Media | Water, Oil, Natural Gas, Steam | WCB body suitable for non-corrosive & mildly corrosive media |
| Operator | Turbine (Worm Gear) | Standard; heavy-duty gearbox required |
| Fire Safe Design | API 607 | Optional; ensures sealing during fire conditions |
| Anti-Static Device | Yes | Springs and balls to dissipate static charge |
| Blow-out Proof Stem | Yes | Stem designed with an integral shoulder |
3. Main Material Specifications
*(Materials remain the same – WCB Body + 316 Trim)*
| Part Name | Material Type | Material Grade | Standard / Remarks |
|---|---|---|---|
| Body / Bonnet | Carbon Steel | A216 WCB | Cast steel suitable for 3-piece design |
| Ball | Stainless Steel | A182 F316 | 316 SS, may be hardened (Chrome Plated) |
| Stem | Stainless Steel | A182 F316 | High strength, good corrosion resistance |
| Seat Insert (Ring) | Reinforced PTFE | RPTFE / Nylon | Or PPL (High temp version) |
| Seat Support / Holder | Stainless Steel | A182 F316 | Supports the soft seal ring |
| Springs | Alloy Steel | 17-7PH / Inconel | Preloads the seats for low-pressure sealing |
| Studs / Bolts | Alloy Steel | A193 B7 | High strength alloy steel |
| Nuts | Carbon Steel | A194 2H | Standard heavy hex nuts |
| Packing / Gasket | Flexible Graphite / PTFE | / | Optional Low-Emission packing available |
4. Main Dimensions (For 30″ Class 600)
Typical dimensions per ASME standards. Note: 30″ Class 600 flanges are very large and heavy. Variations may occur between manufacturers.
| Description | Dimensions (mm) | Dimensions (inches) | Remarks |
|---|---|---|---|
| Port Diameter (d) | 737 | 29.0″ | Full bore (approx – actual may vary slightly by mfr) |
| Flange O.D. (D) | 1092 | 43.0″ | Per ASME B16.5 30″ Class 600 |
| Bolt Circle (D1) | 978 | 38.5″ | |
| Flange Thickness (b) | 98.6 | 3.88″ | Significantly thicker for high pressure |
| No. of Holes – Dia | 28 – Φ54 mm | 28 – 2.12″ | 28 larger bolt holes |
| Face-to-Face (L) | 1397 | 55.0″ | Flanged RF to RF (ASME B16.10 for Class 600) |
| Center to Top (H1) | ~950 | ~37.4″ | Approx, from stem center to top of valve (larger for higher pressure) |
| Gearbox Height (H2) | ~1300 | ~51.2″ | Total height with gearbox (approx – heavy-duty gearbox) |
| Handwheel Dia (Do) | ~1200 | ~47.2″ | Reference (larger for increased torque at 600LB) |
| Approx Weight (WT) | ~5500 kg | ~12125 lbs | Estimated, cast steel body (significant increase due to pressure) |
5. Design Features & Requirements
(Design features remain the same, but structural integrity is even more critical for 600LB)
-
3-Piece Bolted Body: The body consists of three parts (Body + 2 End Caps) bolted together with heavy-duty studs. This allows for easy maintenance without removing the entire valve from the pipeline, a major advantage for a large, heavy 30″ 600LB valve.
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Trunnion Mounted Ball: The ball is fixed and supported by heavy-duty upper and lower stems/bearings. This design is essential for 30″ Class 600 applications, managing high thrust loads and reducing operating torque.
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Double Piston Effect (DPE) Seats: Standard seats provide bidirectional sealing. The valve typically features automatic cavity pressure relief to protect the body in case of thermal expansion.
-
Emergency Sealant Injection: The valve body is equipped with sealant injection fittings. In case of seat damage at high pressure, sealant can be injected to temporarily restore sealing.
-
Anti-Static Device: A spring-loaded plunger/ball ensures electrical continuity between the ball, stem, and body.
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Secondary Metal Seal: In the event the soft seat is destroyed by fire, the ball will contact the metal seat support, providing a metal-to-metal seal (Fire Safe feature).
Note:
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This data sheet is based on standard ASME/API specifications for a 30″ Class 600 valve.
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30″ Class 600 is a very high-pressure, large-diameter valve. The flange dimensions provided are per ASME B16.5. Please confirm if ASME B16.5 or ASME B16.47 (Series A or B) is required for your project, as large diameter high-pressure flanges sometimes fall under the larger flange standards.
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The gearbox dimensions, handwheel size, and overall weight are estimates and will vary significantly by manufacturer. A heavy-duty gearbox is mandatory for this pressure class. Certified drawings are essential for installation and lifting planning.
