In industrial facilities worldwide, フランジ付きボールバルブ play a vital role in controlling flow streams across piping systems. Whether directing aggressive chemical media or ensuring reliable shut-off on critical utility lines, these robust valves deliver exceptional performance. But have you ever wondered exactly how a flange ball valve functions?
- A flange ball valve provides a straight-through flow path, minimizing turbulence and pressure drop.
- It offers a bidirectional sealing capability, allowing flow in either direction.
- These valves are available in various materials, accommodating diverse operating conditions and media.
With a straightforward yet durable design, flanged ball valves provide the quintessential quarter-turn operation for on/off isolation. Their unique components and operating principle enable efficient bidirectional sealing against the toughest process conditions. Let’s take a closer look under the hood.
Key Components of Flange Ball Valve
At the heart of every flanged ball valve is the robust valve body housing the core internal components:
- ボール – A solid spherical ball crafted from specialized alloys containing a circular bore to permit flow when aligned with the valve openings.
- 座席数 – Precision-machined, leak-tight sealing surfaces that allow the ball to rotate yet form an impenetrable seal when closed against the ball’s curved surface.
- 幹 – The mechanical connection extending from the ball that transmits the rotational force from the valve handle or actuator.
- 体 – The pressure-containing enclosure with flanged end connections protruding from each side securely encasing the internal trim.
- End Flanges – Circular collars with bolt holes that allow the valve body to be bolted inline between piping flanges or equipment nozzles.
Simple Operation of Flange Ball Valve
Operating a flanged ball valve is as easy as turning a lever or handle wheel. By rotating the stem just 90 degrees, the ball transitions between its open and closed positions:
- オープンポジション
The circular ball bore directly aligns with the inlet and outlet providing a full-bore, unobstructed flow path.
- 閉位置
Rotating the ball 90 degrees shifts the solid ball surface perpendicular to the flow, creating a bi-directional seat-seal with zero clearance.
This intuitive 1/4-turn action makes flanged ball valves ideal for frequent cycling while the mechanical stem-ball connection ensures reliable, repeatable performance.
Unlike multi-turn valves with rising stems that continually adjust during travel strokes, flanged ball valve stems simply toggle the ball’s position. This eliminates leak-prone stem threads and packing from the flow cavity.
Available in Robust Materials and Full-Bore Designs
While the operating principles are the same, flanged ball valves can be tailored to meet virtually any industrial fluid handling requirement through various materials, pressure classes and end connections:
- Body Materials
Carbon steel, stainless steel, high nickel alloys, titanium and specialized metal/lining combinations to suit temperatures from cryogenic to 500°F+ and resist erosion, corrosion or harsh chemical attack.
- Pressure Classes
From Class 150 to 2500lb flanges with body ratings from vacuum to 2,500+ psi able to handle almost any operating condition.
- Bore Sizes
Available in sizes from 1/4″ through 36″ bore in both full/standard port and special designs like “full bore” where the ball ID matches the pipe inner diameter.
- エンドコネクション
Built to globally-accepted dimensional standards like ANSI, ASME, API, EN, DIN and more for compatibility with existing piping systems and industry codes.
結論
When you need robust on/off control combined with low-maintenance, inline serviceability across virtually any service, flanged ball valves provide an exceptional solution. Their durable flanged body design contains operating pressures while allowing quick, easy access.
For the highest-quality flanged ball valves engineered to your precise specifications, rely on the proven expertise of 新泰弁. Their commitment to excellence and global standards ensures your valve meets your most critical operating parameters without compromise.
