Sự miêu tả
Technical Data Sheet
3-Piece Trunnion Mounted Ball Valve
Project/Item: 3-Piece Fixed Ball Valve
Valve Size: 30 inches (DN750)
Xếp hạng áp suất: 600LB (Class 600)
- General Information
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Item
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Technical Parameter
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Nhận xét
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Loại van
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3-Piece Trunnion Ball Valve
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Side Entry, Bolted Bonnet Construction
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Nominal Bore
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30 inches (DN750)
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Full Bore Design
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Pressure Class
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600 LB (Class 600)
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Corresponds to PN100
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Connection Type
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Flanged Ends (RF)
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Raised Face Flanges per ASME B16.5
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Operation Type
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Worm Gear Operator
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Essential for high-pressure/large bore valves
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Design Standard
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API 6D / ASME B16.34
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Pipeline valve design specification
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Đối mặt
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ASME B16.10
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For RF flanged ends
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Flange Standard
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ASME B16.5
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Flange dimensions and drilling
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Inspection & Test
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API 598
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Pressure test standards
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- Main Technical Parameters & Performance
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Item
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Technical Parameter
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Nhận xét
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Shell Test Pressure
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15.3 MPa (2220 psi)
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Hydrostatic, ambient temperature (Increased for 600LB)
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High-Pressure Seal Test
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11.2 MPa (1625 psi)
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Hydrostatic, ambient temperature (Increased for 600LB)
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Low-Pressure Seal Test
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0.5 – 0.7 MPa
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Air or Nitrogen
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Phạm vi nhiệt độ
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-29°C ~ +200°C
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Depends on seat material selection (e.g., PTFE)
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Applicable Media
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Water, Oil, Natural Gas, Steam
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WCB body suitable for non-corrosive & mildly corrosive media
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Người điều hành
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Turbine (Worm Gear)
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Standard; heavy-duty gearbox required
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Fire Safe Design
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API 607
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Optional; ensures sealing during fire conditions
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Thiết bị chống tĩnh điện
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Yes
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Springs and balls to dissipate static charge
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Blow-out Proof Stem
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Yes
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Stem designed with an integral shoulder
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- Main Material Specifications
*(Materials remain the same – WCB Body + 316 Trim)*
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Part Name
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Material Type
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Material Grade
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Standard / Remarks
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Body / Bonnet
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Carbon Steel
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A216 WCB
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Cast steel suitable for 3-piece design
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Quả bóng
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Stainless Steel
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A182 F316
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316 SS, may be hardened (Chrome Plated)
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Thân cây
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Stainless Steel
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A182 F316
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High strength, good corrosion resistance
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Seat Insert (Ring)
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Reinforced PTFE
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RPTFE / Nylon
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Or PPL (High temp version)
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Seat Support / Holder
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Stainless Steel
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A182 F316
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Supports the soft seal ring
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Springs
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Alloy Steel
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17-7PH / Inconel
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Preloads the seats for low-pressure sealing
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Studs / Bolts
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Alloy Steel
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A193 B7
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High strength alloy steel
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Nuts
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Carbon Steel
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A194 2H
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Standard heavy hex nuts
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Packing / Gasket
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Flexible Graphite / PTFE
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/
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Optional Low-Emission packing available
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- 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.
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Sự miêu tả
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Dimensions (mm)
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Dimensions (inches)
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Nhận xét
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Port Diameter (d)
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737
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29.0″
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Full bore (approx – actual may vary slightly by mfr)
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Flange O.D. (D)
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1092
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43.0″
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Per ASME B16.5 30″ Class 600
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Bolt Circle (D1)
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978
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38.5″
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Flange Thickness (b)
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98.6
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3.88″
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Significantly thicker for high pressure
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No. of Holes – Dia
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28 – Φ54 mm
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28 – 2.12″
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28 larger bolt holes
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Face-to-Face (L)
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1397
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55.0″
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Flanged RF to RF (ASME B16.10 for Class 600)
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Center to Top (H1)
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~950
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~37.4″
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Approx, from stem center to top of valve (larger for higher pressure)
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Gearbox Height (H2)
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~1300
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~51.2″
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Total height with gearbox (approx – heavy-duty gearbox)
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Handwheel Dia (Do)
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~1200
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~47.2″
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Reference (larger for increased torque at 600LB)
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Approx Weight (WT)
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~5500 kg
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~12125 lbs
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Estimated, cast steel body (significant increase due to pressure)
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- 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.
- 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.
- 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.
- Thiết bị chống tĩnh điện: A spring-loaded plunger/ball ensures electrical continuity between the ball, stem, and body.
- 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:
- This data sheet is based on standard ASME/API specifications for a 30″ Class 600 valve.
- 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.
- 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.
CAM KẾT:
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