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Q11H Forged Steel NPT Three-Piece Ball Valve

Q11H Forged Steel NPT Three-Piece Ball Valve

  • Model:Q11H-16C/Q11H-25C/Q11H-40C/Q11H-64C/Q11H-16P/Q11H-25P/Q11H-40P/Q11H-64P/Q11H-16R/Q11H-25R/Q11H-40R/Q11H-64R
  • Specification:DN10-DN50
  • Temperature:-29~180℃
  • Medium:water, gas, oil
  • Pressure:PN16-PN64
  • Connection method:Female Threaded
  • Driving method: Manual
  • Material:Forged steel, forged stainless steel
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Q11H Forged Steel NPT Three-Piece Ball ValveOverview

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 ValveCharacteristic

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 Valvestructure principle

Q11H Forged Steel NPT Three-Piece Ball Valve


Parts Name Material List

ComponentMaterials
BodyWCB, WC9, LCB, CF8, CF3, CF8M, CF3M
Stem1Cr13, 15CrMo, 25Cr2MoV, 04L, 316, 316L
Ball1Cr13, 15CrMo, 25Cr2MoV, 04L, 316, 316L
Sealing Surface1Cr13, Stellite Alloy, Body Material
GasketFlexible Graphite, Stainless Steel with Flexible Graphite, 08 Soft Steel, F304, F316
PackingFlexible Graphite, Braided Graphite


Q11H Forged Steel NPT Three-Piece Ball Valvetechnology parameter

Performance Specification

ItemValueUnit
Nominal Pressure1.6~6.4MPa
Strength Test Pressure1.5 × Nominal Pressure
Seal Test Pressure1.1 × Nominal Pressure
Applicable Temperature-29~180


Q11H Forged Steel NPT Three-Piece Ball Valvestandard size

Q11H Forged Steel Female Threaded Three-Piece Ball Valve Overall Dimension Drawing


Q11H Forged Steel Female Threaded Three-Piece Ball Valve Overall Dimension Table

公称通径 (mm)尺寸(mm)
LHDD1
109076323/8
159076321/2
2010081383/4
2511592451
32130114551 1/4
40150125651 1/2
50170144752