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Concentric Butterfly Valves

The bellows globe valve adopts a bellows structure internally, and the lower end of the stainless steel bellows is
welded to the valve stem to prevent the process fluid from corroding the valve stem. The other end is placed
between the valve body and the valve bonnet to form a static seal. The double sealing design will prevent leakage
if the bellows fails and the valve stem packing fails. The bellows is welded to the valve stem to maintain stable
operating performance and avoid valve stem vibration due to valve plug vibration. Most suitable for pipelines with
steam, flammable, explosive, thermal oil, high purity, toxic and other media.

Design Advantages:

Bellows with packing and double sealing to prevent leakage

The bellows design does not require disassembly and replacement of packing, saving costs.

Circular valve disc design reduces friction between the base and the valve disc and increases service life

High sealing performance, reducing energy loss

Corrosion resistant and able to be used in a range of extreme environments

Multiple operating modes to choose from

Diversified selection of materials to increase strength

Technical Parameters
SizeDN15-DN600, 1/2''-24''
PressurePN10-PN420, Class150-Class2500
Temperature-200°C to 650°C
Connection typeFlange, Thread, Socket weld, Butt weld
Operation modeManual, Pneumatic, Electric, Hydraulic, Gear operation


The precise selection of design standards for bellows sealed globe valves ensures that the product meets international quality and safety benchmarks. Compliance with these standards guarantees valve performance, reliability and compatibility in different installations and applications


Shen Gao's Comprehensive Range of
Concentric Butterfly Valves
Discover the Concentric Butterfly Valves Tailored to Your Needs.
Shen Gao Valves
36 Years of Manufacturing Expertise, Delivering One-Stop Butterfly Valve Solutions.
A reputable provider offers more than just a product sale. Shengao provide strong post-purchase support, addressing issues or concerns.
  • 01
    Determine the Application Field
     Before purchasing a high-performance butterfly valve, pinpoint its primary use—whether in water treatment, oil and gas, or other industries. Each field has specific needs.
  • 02
    Select the Appropriate Valve Type
    Butterfly valves vary. Depending on factors like flow control and pressure, choose a valve type that complements your system's needs.
  • 03
    Choose Materials
    These valves come in materials like stainless steel, brass, or PVC. Select one that withstands the medium it'll control, ensuring durability.
  • 04
    Verify Feasibility
    Engage with specialists to confirm the valve adheres to technical needs. They can offer advice on installation and operation.
  • 05
    Quality Control
    Opt for valves subjected to strict quality checks. A quality valve promises excellent performance and lowers maintenance expenses.
  • 06
    After Sales Service
    24Hours online,2-year warranty or 18 months post-installation, whichever comes first.
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