Q41F Ball Valve
• Full bore design with minimal flow resistance
• 90° quarter-turn operation for quick opening/closing
• PTFE soft seat ensures zero leakage and long service life
• Wide pressure range from PN16 to PN40 for various applications
• Available in cast iron, cast steel and stainless steel body materials
Gaoshan Valve Q41F Flanged Ball Valve
Manual Floating Ball Valve for Water, Steam & Petroleum Media
Product Brief Highlights
- Full Bore Design: Straight-through flow path with minimal pressure drop, ideal for high flow applications.
- Quick 90° Operation: Quarter-turn handle enables fast opening and closing for efficient flow control.
- PTFE Soft Seat Sealing: Corrosion-resistant PTFE seat ensures bubble-tight shut-off and long service life.
- Multi-Pressure Range: Available in PN16, PN25 and PN40 pressure ratings to suit different system requirements.
- Versatile Material Options: Ductile iron, cast steel and stainless steel body materials for various media compatibility.
- Wide Application: Suitable for water, steam, oil, gas and weak corrosive media up to 200℃.
1. Product Overview
The Gaoshan Valve Q41F flanged ball valve is a versatile quarter-turn valve designed for reliable on/off control in industrial and municipal pipeline systems. Featuring a floating ball design with PTFE soft seats, it provides tight shut-off with minimal flow resistance, making it ideal for water, steam, petroleum, gas and weak corrosive media applications.
Available in multiple pressure ratings (PN16, PN25, PN40) and body materials including ductile iron, cast steel and stainless steel, this valve offers excellent durability and corrosion resistance. The simple yet robust structure ensures easy operation and maintenance, while the full bore design allows for maximum flow efficiency in various pipeline configurations.
2. Key Features
- Low Flow Resistance: Full bore structure provides straight flow path with negligible pressure drop.
- Reliable Sealing Performance: PTFE soft seat ensures zero leakage even under high pressure conditions.
- Quick Operation: 90° quarter-turn handle enables fast opening and closing for efficient flow control.
- Corrosion Resistance: Stainless steel ball and stem with PTFE sealing resist various corrosive media.
- Wide Pressure & Temperature Range: PN16 to PN40 pressure ratings with operating temperatures up to 200℃.
- Multiple Material Options: Ductile iron, cast steel and stainless steel body materials for different application needs.
- Easy Maintenance: Simple internal structure allows for quick inspection and replacement of wearing parts.
3. Technical Specifications
| Parameter | Specification |
|---|---|
| Model Series | Q41F-16Q, Q41F-25Q, Q41F-16C, Q41F-25, Q41F-40, Q41F-16P |
| Nominal Pressure (PN) | 1.6 MPa, 2.5 MPa, 4.0 MPa |
| Shell Test Pressure | 2.4 MPa (PN16), 3.8 MPa (PN25), 6.0 MPa (PN40) |
| Seal Test Pressure | 1.8 MPa (PN16), 2.8 MPa (PN25), 4.4 MPa (PN40) |
| Working Temperature | ≤ 200℃ |
| Applicable Medium | Water, Steam, Petroleum, Gas, Weak Corrosive Media |
| Connection Type | Flanged |
| Operation Type | Manual Lever (Optional: Pneumatic, Electric, Wave) |
| Structure Type | Floating Ball Valve |
4. Materials of Construction
| Part Name | Material |
|---|---|
| Valve Body & Bonnet | QT450-10 Ductile Iron / WCB Cast Steel / 304 Stainless Steel |
| Ball & Stem | 2Cr13 / 1Cr18Ni9Ti / 304 Stainless Steel |
| Seat & Packing | PTFE (Polytetrafluoroethylene) |
| Fasteners | Carbon Steel / Stainless Steel |
5. Structure Drawing & Dimensions
Q41F Ball Valve External Structure & Dimension Diagram
| Nominal Diameter DN(mm) | Face-to-Face Length L(mm) | Height H(mm) | Handle Length W(mm) | Weight (kg) |
|---|---|---|---|---|
| 20 | 140 | 63 | 130 | 3 |
| 25 | 160 | 75 | 160 | 5 |
| 32 | 165 | 85 | 180 | 6 |
| 40 | 180 | 95 | 230 | 7 |
| 50 | 200 | 107 | 230 | 10 |
| 65 | 220 | 140 | 400 | 15 |
| 80 | 250 | 152 | 400 | 19 |
| 100 | 280 | 178 | 650 | 33 |
| 150 | 360 | 272 | 1500 | 93 |
| 200 | 400 | 342 | 1800 | 160 |
6. Installation & Maintenance Guidelines
- Remove the flange protective covers and clean the valve thoroughly in fully open position before installation.
- Install the valve in horizontal or vertical pipeline positions, ensuring no stress on the valve body from pipe misalignment.
- Clean the pipeline thoroughly before installation to prevent debris from damaging the PTFE seat and ball surface.
- Do not use the valve actuator as a lifting point to avoid damage to the mechanism and accessories.
- After installation, tighten the flange bolts evenly in a crisscross pattern to ensure uniform sealing pressure.
- For actuated valves, perform signal testing before installation to ensure smooth operation of the actuator.
7. Typical Applications
Gaoshan Valve Q41F flanged ball valves are widely used in various pipeline systems requiring reliable on/off control:
- Municipal water supply and distribution systems
- Steam and condensate pipelines in industrial plants
- Oil and gas transmission and processing systems
- HVAC and heating systems in commercial buildings
- Water treatment plants and chemical processing facilities
Request a Quote Today
Gaoshan Valve provides high-quality Q41F ball valves with reliable performance for global municipal and industrial projects. We offer various materials, pressure ratings and optional actuators to meet your specific requirements.
Email: sales@gaoshanvalves.com | Tell us your size, material and quantity needs!