Cast Iron Flange Ball Valve 2 Inch Port Size Manual Valve Industrial Use for Water System

Overview

This Q41F ductile iron flanged ball valve is a manual shut-off valve for fluid control in piping systems. It is equipped with a stainless steel ball core to achieve reliable sealing. The flanged connection allows simple installation and stable sealing. It can be used for water medium under normal temperature conditions, widely adopted in water supply and industrial water systems.

Product Description

This flanged ball valve is made of ductile iron, manufactured following DIN standard. It adopts manual handle operation to open and close the valve conveniently. The stainless steel ball delivers tight shut-off performance. With PN16 pressure rating, it supports size range DN40-DN150. It features epoxy anti-corrosion coating, long service life and stable performance. OEM customization is available, suitable for industrial water pipeline flow regulation.

Technical Specifications

Working Principle

• Opening:
  The ball valve uses a sphere with a circular through-hole as the opening and closing element. When the valve stem is rotated 90 degrees, the ball's bore aligns with the pipeline axis, allowing the medium to pass through freely with minimal flow resistance.

• Closing & Flow Control:
  Rotating the stem another 90 degrees turns the solid part of the ball against the seats, securely cutting off the flow. The sealing surfaces remain in constant contact with the ball, preventing erosion by the medium and ensuring reliable, bubble-tight shut-off.

• Sealing Mechanism:
  For floating ball designs, medium pressure pushes the ball against the downstream seat to enhance the seal. For fixed ball designs, the pressure moves the seats against the ball, ensuring tight sealing even under high pressure.

Applications

The ball valve is widely used in:

• Oil and gas pipelines, refining, and long-distance transportation

• Chemical processing, pharmaceutical, and paper-making industries

• Water supply and distribution, municipal, and irrigation systems

• HVAC, heating, and cooling circulation systems

• Hydraulic systems, shipbuilding, and construction machinery

• Food and beverage processing, and lithium battery production

• Power generation, metallurgy, and mining applications

• Vacuum and steam services

Applicable media:

Water, steam, oil, natural gas, air, corrosive liquids, slurries, and various industrial fluids, depending on the body and seat materials selected.

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FAQ

Q1: What is the working pressure of this flanged ball valve?

A1: Its pressure rating is PN16, suitable for normal pressure water pipelines.

Q2: What material is the ball core of the valve?

A2: The ball core is stainless steel, which provides good sealing performance.

Q3: What sizes are available for this ductile iron flanged ball valve?

A3: Available sizes cover DN40 to DN150.

Q4: What medium can this ball valve be used for?

A4: It is mainly used for water under normal temperature.

Q5: Can you accept OEM customization for this valve?

A5: Yes, OEM service is supported.

Q6: What is the warranty period of this ball valve?

A6: We provide a 1-year warranty for this product.