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Q11H Forged Steel NPT Three-Piece Ball Valve Overview
The Q11H Forged Steel NPT Three-Piece Ball Valve is a specialized ball valve designed for high-pressure and high-temperature applications. It features a forged steel body (typically made of materials such as A105) and NPT connections. The valve employs a three-piece bolted structure, ensuring excellent mechanical strength and reliable sealing performance. Designed with metal hard-sealing technology, it operates through a 90-degree rotation of the stem to drive a precisely machined ball, providing stable sealing under high-pressure differentials and elevated temperatures. This valve is engineered for demanding conditions in industries such as petroleum, chemical, and power plants, and is suitable for media including water, steam, oil, and corrosive fluids. It serves as a critical device for reliable shut-off in high-pressure, small-diameter pipeline systems.

Q11H Forged Steel NPT Three-Piece Ball Valve
Q11H Forged Steel NPT Three-Piece Ball Valve Features
1. Forged Steel Body for High-Pressure Performance: Manufactured using forging processes, the valve body features dense and uniform material structure, offering excellent mechanical properties. It reliably withstands high pressure, high temperature, and frequent pressure shocks.
2. Three-Piece Structure for Easy Maintenance: The valve body consists of three sections connected by high-strength bolts, enabling internal inspection and seal replacement without removing the valve from the pipeline. This significantly reduces maintenance time and costs.
3. Metal Hard Sealing for High-Temperature Resistance: The ball and seat utilize hard alloy sealing surfaces, providing high resistance to wear, high temperatures, and erosion. This design makes the valve suitable for steam and other high-temperature media.
4. NPT Connection for Compact Reliability: Equipped with NPT or G threads, the valve offers a compact and reliable seal. It is ideal for tight layouts in high-pressure, small-diameter piping systems.
5. Fire-Safe Design: Compliant with API 607 fire safety standards, the valve maintains essential sealing functionality through its metal sealing pairs even if soft seals fail, ensuring a high level of safety.

Q11H Forged Steel NPT Three-Piece Ball Valve
Parts Name Material List
| 序 号NO. | 名称Name | 材料Material |
| 1 | 阀体body | 碳钢、不锈钢carbon steel、Stainless Steel |
| 2 | 球体ball | 不锈钢Stainless Steel |
| 3 | 密封圈seal gasket | PTFE |
| 4 | 填料packing | 弹性石墨Flexible Graphite |
| 5 | 阀杆stem | 不锈钢Stainless Steel |
| 6 | 阀座seat | 碳钢、不锈钢carbon steel、Stainless Steel |
| 性能规范表Performance Specification | ||
| 公称压力Nominal Pressure | 1.0-6.4 | Mpa |
| 强度试验压力Shell Test | 1.5-9.6 | |
| 密封试验压力Seal Test | 1.1-7.04 | |
| 适用温度Suitable Temp. | 120 | ℃ |
Dimensions Standard Requirements
1. The structural length of the valve shall conform to the standard GB/T12221.
2. The connecting flange shall conform to the standard GB9113.

Q11H Forged Steel NPT Three-Piece Ball Valve View Drawing
Q11H Forged Steel NPT Three-Piece Ball Valve Dimensions Table
| 公称通径 (mm) | 尺寸(mm) | |||
| L | H | D | D1 | |
| 10 | 90 | 76 | 32 | 3/8 |
| 15 | 90 | 76 | 32 | 1/2 |
| 20 | 100 | 81 | 38 | 3/4 |
| 25 | 115 | 92 | 45 | 1 |
| 32 | 130 | 114 | 55 | 1 1/4 |
| 40 | 150 | 125 | 65 | 1 1/2 |
| 50 | 170 | 144 | 75 | 2 |

Model:
ZQ41H-16C/ZQ41H-25C/ZQ41H-40C/ZQ41H-64C/ZQ41Y-16P/ZQ41Y-25P/ZQ41Y-40P/ZQ41Y-64PSpecification:
DN15~300Pressure:
PN1.6~6.4MPaMaterial:
Carbon steel, stainless steel
Model:
Q21F-16TSpecification:
DN15-DN25Pressure:
1.6MpaMaterial:
brass
Model:
Q61F-16PSpecification:
DN15-DN100Pressure:
PN16Material:
stainless steel