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Q41F American Standard Floating Ball Valve Overview
The Q41F American Standard Floating Ball Valve is a flanged floating ball valve strictly designed and manufactured in accordance with American standards such as API and ASME, featuring standard American flange connections (e.g., RF/RTJ). The valve body is typically made of materials like WCB cast steel or CF8 stainless steel. The ball within the valve floats slightly under medium pressure, pressing tightly against the outlet seat to achieve a self-sealing effect. The valve is operated by rotating the stem 90 degrees to open or close, with sealing pairs commonly made of soft materials like PTFE or hard metal seals. This valve meets pressure class requirements ranging from Class 150 to Class 600 and is suitable for various pipeline systems in industries such as petroleum, chemical, natural gas, and power. It serves as a versatile and reliable shut-off device within the American standard system.

Q41F American Standard Floating Ball Valve Product Image
Q41F American Standard Floating Ball Valves Features
1. Strict Compliance with American Standards: Designed and manufactured in accordance with API 6D, ASME B16.34, and other standards. The flange interfaces are fully compatible with American standard piping systems, ensuring interchangeability and system compatibility.
2. Floating Ball Self-Tightening Seal Structure: Utilizes medium pressure to push the ball against the seat, achieving reliable sealing. The structure is simple, compact, and offers excellent sealing performance.
3. Light Operation and Quick Opening/Closing: A 90-degree rotation achieves full opening or closing, featuring low flow resistance and minimal operating torque. Can be equipped with manual, gearbox, or pneumatic/electric actuators.
4. Fire-Safe and Safety Design: Typically compliant with API 607 fire safety standards, providing a metal auxiliary seal in case of soft seal failure. The stem features an anti-blowout design for high safety.5. Easy Maintenance and Wide Applicability: Features a mature and reliable structure with convenient maintenance. Suitable for water, steam, oil, natural gas, and various corrosive media. Commonly used in industries such as petrochemicals and energy.

Q41F American Standard Floating Ball Valve Structure Diagram
Parts Name Material List
| 序 号NO. | 名称Name | 材料Material |
| 1 | 阀体body | ZG1Cr18Ni9Ti、CF8、CF3 、CF8M、ZG1Cr18Ni12Mo2Ti |
| 2 | 球体ball | 1Cr18Ni9Ti、1Cr18Ni12Mo2Ti、304、304L、316 |
| 3 | 密封垫seal gasket | 不锈钢/增强柔性石墨Stainless Steel / Reinforced Flexible Graphite、PTFE |
| 4 | 填料packing | 不锈钢/增强柔性石墨Stainless Steel / Reinforced Flexible Graphite、PTFE |
| 5 | 阀杆stem | 1Cr18Ni9Ti、1Cr18Ni12Mo2Ti、304、304L、316 |
| 性能规范表Performance Specification | ||
| 公称压力Nominal Pressure | 1.6-4.0 | Mpa |
| 强度试验压力Shell Test | 2.4-6.0 | |
| 密封试验压力Seal Test | 1.76-4.4 | |
| 适用温度Suitable Temp. | 550 | ℃ |
Dimensions Standard Requirements
1. The structural length of the valve shall conform to the standard ASME B16.10.
2. The connecting flange shall conform to the standard ASME B16.50.

Q41F American Standard Floating Ball Valve View Drawing
Q41F American Standard Floating Ball Valve Dimensions Table
| 1.6MPa | DN | L | D | D1 | D2 | b | n-φd | H | D0 |
| 凸面法兰 RF Q41F Q41PPL 16C 16P 16R | 15 | 130 | 95 | 65 | 45 | 14 | 4-14 | 78 | 140 |
| 20 | 140 | 105 | 75 | 55 | 14 | 4-14 | 84 | 160 | |
| 25 | 150 | 115 | 85 | 65 | 14 | 4-14 | 95 | 180 | |
| 32 | 165 | 135 | 100 | 78 | 16 | 4-18 | 150 | 250 | |
| 40 | 180 | 145 | 110 | 85 | 16 | 4-18 | 150 | 300 | |
| 50 | 200 | 160 | 125 | 100 | 18 | 4-18 | 170 | 350 | |
| 65 | 220 | 180 | 145 | 120 | 20 | 4-18 | 195 | 350 | |
| 80 | 250 | 195 | 160 | 135 | 20 | 8-18 | 215 | 400 | |
| 100 | 280 | 215 | 180 | 155 | 20 | 8-18 | 250 | 500 | |
| 125 | 320 | 245 | 210 | 185 | 22 | 8-18 | 265 | 600 | |
| 150 | 360 | 280 | 240 | 210 | 24 | 8-23 | 270 | 800 | |
| 200 | 400 | 335 | 295 | 265 | 26 | 12-23 | 330 | 1200 | |
| 2.5MPa | 15 | 130 | 95 | 65 | 45 | 16 | 4-14 | 103 | 140 |
| 凸面法兰 RF Q41F Q41PPL 25 25P 25R | 20 | 140 | 105 | 75 | 55 | 16 | 4-14 | 112 | 160 |
| 25 | 150 | 115 | 85 | 65 | 16 | 4-14 | 123 | 180 | |
| 32 | 165 | 135 | 100 | 78 | 18 | 4-18 | 150 | 250 | |
| 40 | 180 | 145 | 110 | 85 | 18 | 4-18 | 156 | 300 | |
| 50 | 200 | 160 | 125 | 100 | 20 | 8-18 | 172 | 350 | |
| 65 | 220 | 180 | 145 | 120 | 22 | 8-18 | 197 | 350 | |
| 80 | 250 | 195 | 160 | 135 | 22 | 8-23 | 222 | 400 | |
| 100 | 280 | 230 | 190 | 160 | 24 | 8-23 | 253 | 500 | |
| 125 | 320 | 270 | 220 | 188 | 28 | 8-25 | 275 | 600 | |
| 150 | 360 | 300 | 250 | 218 | 30 | 8-25 | 286 | 800 | |
| 200 | 400 | 360 | 310 | 278 | 34 | 12-25 | 340 | 1200 |
| 4.0MPa | DN | L | D | D1 | D2 | D6 | b | n-φd | H | D0 |
| 凹凸法兰 MFM Q41F Q41PPL 40 40P 40R | 15 | 130 | 95 | 65 | 45 | 40 | 16 | 4-14 | 103 | 140 |
| 20 | 140 | 105 | 75 | 55 | 51 | 16 | 4-14 | 112 | 160 | |
| 25 | 150 | 115 | 85 | 65 | 58 | 16 | 4-14 | 123 | 160 | |
| 32 | 180 | 135 | 100 | 78 | 66 | 18 | 4-18 | 150 | 250 | |
| 40 | 200 | 145 | 110 | 85 | 76 | 18 | 4-18 | 156 | 250 | |
| 50 | 220 | 160 | 125 | 100 | 88 | 20 | 4-18 | 172 | 350 | |
| 65 | 250 | 180 | 145 | 120 | 110 | 22 | 8-18 | 197 | 350 | |
| 80 | 280 | 195 | 160 | 135 | 121 | 22 | 8-18 | 222 | 450 | |
| 100 | 320 | 230 | 190 | 160 | 150 | 24 | 8-23 | 253 | 450 | |
| 125 | 400 | 270 | 220 | 188 | 176 | 28 | 8-25 | 275 | 600 | |
| 150 | 400 | 300 | 250 | 218 | 204 | 30 | 8-25 | 286 | 800 | |
| 200 | 550 | 375 | 320 | 282 | 260 | 38 | 12-30 | 340 | 1200 | |
| 6.4MPa | 15 | 165 | 105 | 75 | 55 | 40 | 18 | 4-14 | 105 | 140 |
| 凹凸法兰 MFM Q41F Q41PPL 64 64P 64R | 20 | 190 | 125 | 90 | 68 | 51 | 20 | 4-18 | 125 | 160 |
| 25 | 216 | 135 | 100 | 78 | 58 | 22 | 4-18 | 135 | 250 | |
| 32 | 229 | 150 | 110 | 82 | 66 | 24 | 4-23 | 150 | 350 | |
| 40 | 241 | 165 | 125 | 95 | 76 | 24 | 4-23 | 165 | 350 | |
| 50 | 292 | 175 | 135 | 105 | 88 | 26 | 4-23 | 175 | 450 | |
| 65 | 330 | 200 | 160 | 130 | 110 | 28 | 8-23 | 200 | 450 | |
| 80 | 356 | 210 | 170 | 140 | 121 | 30 | 8-23 | 210 | 600 | |
| 100 | 432 | 250 | 200 | 168 | 150 | 32 | 8-25 | 250 | 700 | |
| 125 | 508 | 295 | 240 | 202 | 176 | 36 | 8-30 | 295 | 1100 | |
| 150 | 559 | 340 | 280 | 240 | 204 | 38 | 8-34 | 340 | 1500 |

Model:
Q641F-16C/Q641F-25C/Q641F-40C/Q641F-16P/Q641F-25P/Q641F-40P/Specification:
DN20-DN200Pressure:
PN16,PN25,PN40Material:
Carbon steel,stainless steel,Bronze
Model:
QV641-16C/QV641-25C/QV641-40C/QV641-64C/QV641-16P/QV641-25P/QV641-40P/QV641-64P/QV641-16R/QV641-25R/QV641-40R/QV641-64RSpecification:
DN25~250Pressure:
PN1.6~6.4MPaMaterial:
Cast Steel,Stainless Steel,Duplex Stainless Steel
Model:
Q41FSpecification:
DN15-DN200Pressure:
PN16,PN25,PN40Material:
Low-temperature steel, stainless steel