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Q41F Forged Steel Flange Ball Valve

Q41F Forged Steel Flange Ball Valve

  • Model:Q41F-16C/Q41F-25C/Q41F-40C/Q41F-64C/Q41F-16P/Q41F-25P/Q41F-40P/Q41F-64P/Q41F-16R/Q41F-25R/Q41F-40R/Q41F-64R
  • Specification:DN15-DN200
  • Temperature:-29℃-150℃
  • Medium:Water, Steam, Oil, and Weakly Corrosive Media
  • Pressure:PN16-PN64
  • Connection method:flange
  • Driving method: Manual
  • Material:Forged steel, forged stainless steel
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Q41F Forged Steel Flange Ball ValveOverview

Overview

The Q41F Forged Steel Flange Ball Valve is a rotary control valve designed for both general and demanding industrial applications. It controls the flow of media by rotating the stem, which drives a ball with a circular through-hole to rotate around an axis perpendicular to the flow path, enabling the opening, closing, or flow regulation of the piping system. The core design features a compact floating or trunnion-mounted ball structure, ensuring reliable sealing and operational flexibility under high pressure and frequent operation. The body is manufactured using a forging process and made of high-quality forged steel, forged stainless steel, ensuring excellent impact resistance and structural integrity under high pressure, high temperature, and corrosive conditions. Critical components are precision-machined and feature soft seal or metal-to-metal sealing designs, combined with a flanged connection structure, ensuring a secure installation and easy disassembly from the pipeline. The valve adopts a standard flanged connection method, fastened to the pipeline flange with bolts, making it suitable for medium-to-high pressure, high-temperature, and general industrial pipeline systems. It can be operated via a handle or worm gear drive, achieving quick opening and closing with a 90° rotation. When closed, the medium pressure forces the ball's sealing surface against the seat, achieving reliable bidirectional sealing. This valve is specifically designed for industrial fluid conveying systems handling media such as water, steam, oil, natural gas, and corrosive media, and is particularly suitable for demanding applications in the petroleum, chemical, power, metallurgy, pharmaceutical, and general industrial sectors that require a compact structure, low flow resistance, excellent sealing performance, and long-term stable operation under high temperature, high pressure, or corrosive environments.

Q41F Forged Steel Flange Ball Valve Product Image

Q41F Forged Steel Flange Ball ValveCharacteristic

Features

1、High-Performance Forged Body Structure: The valve body is manufactured using an integral forging process and made of high-quality carbon steel, stainless steel, or alloy steel. This eliminates casting defects, significantly enhances the density and strength of the body, and ensures long-term stable operation under high pressure, high temperature, and harsh working conditions, completely avoiding the risk of pressure-containing part failure.

2、Reliable Sealing System: Utilizing soft seal or metal-to-metal sealing designs, the sealing surfaces of the seat and ball are precision-machined and lapped to ensure excellent conformity. When the valve closes, the medium pressure forces the ball's sealing surface against the seat, achieving bidirectional zero leakage. An elastic preloading element is installed behind the seat, which automatically compensates for seal wear and pressure fluctuations, ensuring durable and reliable sealing performance.

3、Standard Flange Connection: The valve adopts standard flange connections (such as RF, RTJ, FF, etc.), fastened to the pipeline flange with bolts. This provides high connection strength, excellent sealing performance, and ease of installation and disassembly. The robust and reliable flanged connection structure is suitable for medium-to-high pressure, large-diameter, and critical industrial pipeline systems.

4、Low Flow Resistance Straight-Through Flow Path Design: The valve body features a full bore or reduced bore design, resulting in a short and smooth flow path for the medium, effectively reducing fluid resistance loss and pressure drop. The transition of the flow path is smooth, avoiding eddy currents and media retention. It is suitable for various industrial fluids such as water, steam, oil, natural gas, and corrosive media.

5、Widely Applicable Operating Conditions: The product design covers pressure classes from PN16-PN64 and a wide temperature range, meeting the pipeline control requirements of diverse industries such as petroleum, chemical, power, metallurgy, pharmaceutical, and general industry.

6、Versatile Operation Modes and Configurations: Various drive modes are available, including handle, worm gear, pneumatic actuator, or electric actuator, providing flexible and convenient operation. Handle operation enables quick 90° opening and closing. Worm gear drives are suitable for high torque and large diameter valves. Pneumatic and electric actuators meet the requirements for remote control and automation systems. The valve has no installation direction restrictions and can be installed horizontally or vertically, adapting to different piping layout requirements.

Q41F Forged Steel Flange Ball Valvestructure principle

Q41F Forged Steel Flange Ball Valve Structure Diagram


Part Name / Material List

Valve Body & BonnetCarbon Steel,Cast SteelChrome-Nickel Stainless Steel
Ball &StemChrome-Nickel,Chrome-Nickel- Molybdenum Stainless SteelChrome-Nickel Stainless Steel
Seal RingFlexible Graphite Gasket(316+)/Flexible Graphite Ring
PackingPolytetrafluoroethylene(PTFE)


Q41F Forged Steel Flange Ball Valvetechnology parameter

Performance Specification

性能规范表Performance Specification Table
公称压力Nominal Pressure (PN)1.6/2.5/4.0/6.4MPa
强度试验压力Strength Test Pressure2.4/3.75/6/9.6
密封试验压力Seal Test Pressure1.76/2.75/4.4/7.04
适用温度Suitable Temperature Range-29-150


Q41F Forged Steel Flange Ball Valvestandard size

Q41F Forged Steel Flange Ball Valve Overall Dimension Drawing



Q41F Forged Steel Flange Ball Valve Overall Dimension Table

公 称 通 径DN尺寸size(mm)
1.6MPa2.5MPa4.0MPa
LDD1bn-φdLDD1bn-φdLDD1bn-φd
151309565144-141309565164-1413013065164-14
2014010575144-1413010575164-1415015075164-14
2515011585144-1414011585164-1416016085164-14
32165135100164-18165135100184-18180180100184-18
40180145110164-18165145110184-18200200110184-18
50200160125164-18203160125204-18230230125204-18
65220180145184-18222180145228-18290290145228-18
80250195160208-18241195160228-18310310160228-18
100280215180208-18305230190248-23350350190248-23
125320245210228-18356270220288-25400270220288-25
150360280240248-23394300250308-25480300250308-25
2004003352952812-234573603103412-256003753203812-30