Technical Datasheet
Product Name: Pneumatic Y Pattern Bellows Seal Globe Valve
Model: DN40-PN16-RF Pneumatic Y Pattern Bellows Seal Globe Valve
- General Information
Item | Đặc điểm kỹ thuật |
Loại van | Y Pattern Globe Valve (Oblique Pattern, Rising Stem) with Pneumatic Actuator |
Kích thước danh nghĩa | DN40 (1-1/2 inches) |
Xếp hạng áp suất | PN16 (Class 150) |
Connection Type | Flanged Ends with Raised Face (RF) |
Special Design | Bellows Seal (Hermetic stem sealing) |
Body / Bonnet Material | Cast Steel / Stainless Steel (Typically WCB / CF8 / CF8M, to be specified) |
Actuation Type | Pneumatic Actuator (Spring Return / Double Acting, to be specified) |
Control Type | On-Off / Modulating (to be specified) |
- Technical Specifications
Item | Đặc điểm kỹ thuật |
Xếp hạng áp suất | PN16 (16 bar / 232 psi) |
Shell Test Pressure | 24 bar (2.4 MPa / 348 psi) |
Seal Test Pressure | 17.6 bar (1.76 MPa / 255 psi) |
Design Temperature | -29°C to +425°C (Depending on body and seat materials) |
Applicable Media | Steam, Thermal Oil, Water, Gas, Corrosive Fluids, and applications requiring zero fugitive emissions |
Flow Path | Y Pattern (Oblique) – Reduced flow resistance compared to standard globe valves |
Leakage Rate | Class V / Class VI per API 598 / FCI 70-2 (Metal seat) or Class VI(Soft seat optional) |
- Pneumatic Actuator Specifications
Item | Đặc điểm kỹ thuật |
Actuator Type | Pneumatic Diaphragm / Piston Type (to be specified) |
Actuation Mode | Spring Return (Fail Safe: Fail Open / Fail Closed) or Double Acting(No fail-safe) |
Air Supply Pressure | 4–7 bar (60–100 psi) (Typical) |
Control Signal | On-Off: 3/2 or 5/2 solenoid valve; Modulating: 4–20 mA input / positioner |
Accessories | Solenoid Valve, Positioner (Analog / Digital), Limit Switches, Air Filter Regulator, Lockout Valve (as specified) |
Position Feedback | Mechanical or Proximity Limit Switches / 4–20 mA Position Transmitter |
Manual Override | Handwheel or Manual Lever (Optional) |
Enclosure Protection | IP65 / IP67 / NEMA 4 / NEMA 7 (Explosion-proof optional) |
- Main Material of Parts
Part Name | Vật liệu | Material Grade (Reference) |
Thân hình | Cast Carbon Steel / SS | ASTM A216 WCB / A351 CF8 (304) / CF8M (316) |
Bonnet | Cast Carbon Steel / SS | ASTM A216 WCB / A351 CF8 / CF8M |
Disc / Plug | Stainless Steel + Hard-facing | 13Cr (AISI 410) / F304 / F316 with Stellite 6 hard-facing (optional) |
Thân cây | Stainless Steel | ASTM A276 410 / 304 / 316 |
Bellows Assembly | Stainless Steel | ASTM A240 304 / 316L (Multi-ply, fully welded) |
Seat Ring | Stainless Steel + Hard-facing | 13Cr / 304 / 316 with Stellite 6 hard-facing (integral or welded) |
Gland Packing | Flexible Graphite | High-density graphite with anti-extrusion rings |
Gasket | Spiral Wound / Graphite | 304SS + Flexible Graphite / PTFE |
Bonnet Bolts / Studs | Alloy Steel / SS | ASTM A193 B7 / A193 B8 |
Flange Gasket Surface | Raised Face (RF) per ASME B16.5 / EN 1092-1 | – |
Actuator Yoke / Bracket | Carbon Steel / Stainless Steel | Painted Carbon Steel / SS304 / SS316 |
Actuator Body | Aluminum / Stainless Steel | Anodized Aluminum / CF8M |
- Main Dimensions & Connection Data (Unit: mm)
*Note: Flange dimensions conform to ASME B16.5 (Class 150) or EN 1092-1 (PN16).*
Kích thước (DN) | Flange Standard | Face to Face (End to End) (L) | Flange OD (D) | Bolt Circle Dia (K) | Center to Top Height (H) approx. (without actuator) | Actuator Height (H1) approx. | Overall Height (H + H1) approx. |
DN40 | ASME B16.5 Class 150 | 200 mm (Y Pattern typical) | 127 mm | 98.5 mm | Varies by design | Varies by actuator size | Varies by design |
DN40 | EN 1092-1 PN16 | 200 mm (Y Pattern typical) | 150 mm | 110 mm | Varies by design | Varies by actuator size | Varies by design |
Note: Dimensions above are typical. Overall height increases significantly with pneumatic actuator. Final dimensions should be based on approved manufacturer drawings.
- Applicable Design Standards
- Valve Design & Manufacture: BS 1873 / API 623 / ASME B16.34
- Face-to-Face Dimensions: ASME B16.10 / EN 558 (Y pattern specific)
- Flange Dimensions: ASME B16.5 (Class 150) / EN 1092-1 (PN16)
- Pressure-Temperature Rating: ASME B16.34 / EN 1092-1
- Inspection & Testing: API 598 / EN 12266
- Bellows Design: ISO 15761 / BS 6364
- Actuator Mounting: ISO 5211 / VDI/VDE 3845
- Fugitive Emissions: ISO 15848-1 (Optional)
- Control Valve Testing: IEC 60534 / FCI 70-2 (for modulating service)
- Product Features
- Y Pattern (Oblique) Design: Angled seat and stem design significantly reduces flow resistance (lower pressure drop) compared to standard globe valves, ideal for applications requiring continuous flow with throttling capability.
- Bellows Seal: Fully welded stainless steel bellows provides a hermetic seal, eliminating fugitive emissions and ensuring zero stem leakage—critical for steam, thermal oil, and hazardous media applications.
- Pneumatic Actuation: Enables remote, automated operation for on-off or modulating control, improving system efficiency and safety.
- Fail-Safe Operation (Spring Return): Spring-return actuators ensure valve returns to a safe position (fail-open or fail-closed) upon loss of air supply, providing critical safety protection.
- Raised Face Flanged Ends: Standard RF flanges ensure reliable, leak-free connections compatible with ASME or EN piping systems.
- PN16 Pressure Rating: Suitable for low to medium pressure applications commonly found in steam distribution, HVAC, and industrial processing.
- Hard-Faced Trim (Optional): Stellite hard-facing on seat and disc surfaces provides excellent wear resistance and tight shut-off for demanding services.
- ISO 5211 Mounting Pad: Standardized mounting interface ensures easy actuator installation, alignment, and maintenance.
- Accessories Ready: Designed to accommodate solenoid valves, positioners, limit switches, and air filter regulators for complete automation packages.
Remarks:
- Material Selection: Specify body material based on media:
- WCB: Water, oil, steam, non-corrosive services
- CF8 (304): Mildly corrosive services
- CF8M (316): Highly corrosive services, chlorides, and marine applications
- Actuator Selection: Specify actuation mode:
- Spring Return (Fail Closed): Air to open, spring to close
- Spring Return (Fail Open): Air to close, spring to open
- Double Acting: No fail-safe, requires air supply to both open and close
- Control Type: Specify whether the valve is for on-off service (solenoid valve control) or modulating service (positioner with 4–20 mA signal).
- Phụ kiện: Specify required accessories for complete automation:
- Solenoid valve (voltage: 24VDC, 110VAC, 220VAC, etc.)
- Positioner (analog 4–20 mA / digital / HART / Profibus)
- Limit switches (mechanical / proximity / inductive)
- Air filter regulator (with pressure gauge)
- Fugitive Emissions: For applications with strict environmental compliance, specify ISO 15848-1 certification.
- For specific dimensional data, actuator sizing, torque requirements, and wiring diagrams, please refer to the official certified drawings and actuator assembly documentation from the manufacturer.
CAM KẾT:
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