3″-150LB-RF Floating Ball Valve

Technical Data Sheet

Product: Floating Ball Valve
Size / Rating: 3″ – Class 150 – RF (Raised Face)
Gehäusematerial: WCB / A105 (CS) / CF8 / CF8M (SS)

1. 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.

2. Basic Specifications

3. Material Specification

4. Hauptmerkmale

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

5. Testing & Standards

6. 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).

7. Approximate Dimensions (for reference)

Note: Final dimensions are subject to the specific design; certified GA drawings should be referenced for engineering purposes.

Remarks:

1. This valve is suitable for general service applications. For high‑temperature (>200°C) or highly corrosive media, consider metal‑seated or special alloy versions.
2. For actuated versions (electric or pneumatic), an ISO 5211 top mounting flange (F07 / F10, etc.) is available based on torque requirements.

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