Technical Data Sheet
Product: Floating Ball Valve
Size / Rating: 3″ – Class 150 – RF (Raised Face)
جنس بدنه: WCB / A105 (CS) / CF8 / CF8M (SS)
- General Description
This flanged floating ball valve is available in 2‑piece or 3‑piece construction with carbon steel or stainless steel body options. Featuring low flow resistance, fast quarter‑turn operation, and bidirectional sealing, it is one of the most widely used isolation valves in industrial piping systems. The 3‑inch size is ideal for medium‑flow applications and comes standard with a locking handle, with optional gearbox or actuator for automation.
- Basic Specifications
پارامتر | مشخصات |
اندازه | 3″ (DN80) |
Pressure Class | Class 150 (PN20) |
Design Type | Floating Ball Valve (2‑piece / 3‑piece optional) |
End Connections | Flanged RF (Raised Face) |
Flange Standard | ASME B16.5 |
محدوده دما | -29°C ~ +200°C (depending on seat material) |
رسانه | Water, oil, gas, steam, mild corrosive fluids |
- Material Specification
No. | Part Name | Standard (CS) | Standard (SS) | Upgrade Option |
1 | بدن | A105 / WCB | CF8 (304) / CF8M (316) | F51 (Duplex) / Monel |
2 | توپ | 304 SS (Chrome plated) | 304 / 316 SS | 316L / Monel / Hastelloy |
3 | صندلی | PTFE / RPTFE | PTFE / RPTFE | PEEK / Nylon / Metal Seated |
4 | ساقه | 304 SS | 304 / 316 SS | 17-4PH / Inconel |
5 | Packing | PTFE | PTFE | Flexible Graphite / Low Emission |
6 | Body Gasket | PTFE / Spiral Wound | PTFE / Spiral Wound | Graphite Composite |
7 | اپراتور | Lever with lock (standard) | Lever with lock (standard) | Worm Gearbox / Actuator |
- ویژگیهای کلیدی
4.1 Floating Ball Design Advantages
- Low flow resistance – Full‑port design offers minimal pressure drop, equivalent to a straight pipe section.
- Quarter‑turn operation – Fast 90‑degree operation suitable for frequent cycling.
- Bidirectional sealing – Upstream pressure forces the ball against the downstream seat for reliable shut‑off.
4.2 Seat & Sealing
- Low torque seats – PTFE/RPTFE seats provide self‑lubrication and low operating torque.
- Anti‑static design – A grounding spring ensures electrical continuity between stem, ball, and body to prevent static buildup.
- Blowout‑proof stem – Stem is designed to prevent ejection under pressure.
4.3 Connection & Operation
- RF flanged ends – Conforms to ASME B16.5 for reliable sealing with spiral wound or non‑metallic gaskets.
- Operation options:
- 3″: Lever with lock (standard) – Allows open/close position locking to prevent accidental operation
- Worm gearbox optional – Reduces operating torque for easier manual operation
- ISO 5211 actuator mounting pad available for pneumatic/electric actuators
- Testing & Standards
Test / Standard | Reference |
Design & Manufacture | ASME B16.34 / API 608 |
Flange Standard | ASME B16.5 |
Pressure Testing | API 598 / ISO 5208 |
Shell Test | 1.5 × Class 150 (3.0 MPa) |
Low‑Pressure Seat Test | 0.6 MPa (bubble‑tight) |
Fire Safe (optional) | API 607 / ISO 10497 |
Anti‑Static | API 608 / ISO 17292 |
Fugitive Emission (optional) | ISO 15848‑1 / TA‑Luft |
- Installation & Maintenance Notes
6.1 Installation Precautions
- Flow direction – Floating ball valves are bidirectional; however, installing according to the body arrow is recommended to maximize seat life.
- Flange installation – Use appropriate gaskets (spiral wound recommended). Tighten bolts evenly in a cross pattern.
- Welding (if applicable) – For weld‑end valves, open the valve before welding to prevent heat damage to seats.
6.2 Operation & Maintenance
- Operating torque – For 3″ valves, an extended lever or gearbox is recommended to avoid excessive stem torque.
- Periodic inspection – Check packing area for leakage; if slight leakage occurs, carefully tighten the packing gland.
- Seat replacement – Top‑entry or 2‑piece design allows internal component replacement without removing the valve from the pipeline (depending on construction).
- Approximate Dimensions (for reference)
Dimension | Value (mm / inch) |
Face‑to‑Face Length (L) | ~203 mm (8.0″) |
Flange Outer Diameter | Per ASME B16.5 Class 150 |
Flange Bolt Circle | Per ASME B16.5 Class 150 |
Overall Height (lever) | ~180 ~ 200 mm |
Overall Height (gearbox) | ~300 ~ 350 mm |
اپراتور | Lever with lock (standard) / Worm gearbox (optional) |
Note: Final dimensions are subject to the specific design; certified GA drawings should be referenced for engineering purposes.
Remarks:
- This valve is suitable for general service applications. For high‑temperature (>200°C) or highly corrosive media, consider metal‑seated or special alloy versions.
- For actuated versions (electric or pneumatic), an ISO 5211 top mounting flange (F07 / F10, etc.) is available based on torque requirements.
ضمانت:
شرکت SAVVY VALVES متعهد به ارائه کیفیت استثنایی محصول و خدمات پس از فروش بدون نگرانی است. شیرهای ما حداقل ۱۲ ماه عمر مفید دارند که در این مدت، تمام قطعات یدکی لازم و دستورالعملهای دقیق تعمیر و نگهداری را به صورت رایگان ارائه خواهیم داد. در طول دوره گارانتی، در صورت بروز هرگونه آسیب غیر انسانی، قطعات را بدون هیچ هزینهای تعویض کرده و پشتیبانی فنی حرفهای ارائه میدهیم. پس از انقضای گارانتی، مشتریان فقط باید هزینه قطعات یدکی را بپردازند، در حالی که همچنان از خدمات تعمیر و نگهداری با تخفیف بهرهمند میشوند. هدف ما کمک به مشتریان برای کاهش هزینههای عملیاتی و افزایش بهرهوری تولید از طریق کیفیت قابل اعتماد و پشتیبانی جامع پس از فروش است. چه برای سوالات فنی و چه برای نیازهای تعمیر و نگهداری، تیم متخصص ما به سرعت پاسخ خواهد داد تا اطمینان حاصل شود که سیستم شیر شما در هر زمان عملکرد بهینه خود را حفظ میکند.