
Material: Carbon steel, stainless steel (304, 316)
Size Range: DN100-DN1400
Connection Options: Flanged (RF, RJ), butt-welded
Working Pressure: Commonly PN16 to PN250 (Class 150 to Class 1500)
Sealing Options: Metal-to-metal, soft seals (PTFE, EPDM)
Manufacturing Method: Casting or forging
Applicable Medium: Water, steam, oil, gas, slurries, and other industrial fluids
The Pneumatic Eccentric Hemisphere Valve is engineered for precise flow control in industrial applications. Its unique eccentric design ensures tight sealing and minimal wear, enhancing durability and performance. The valve is actuated pneumatically, allowing for rapid and automated operation, making it suitable for systems requiring efficient flow regulation.

1.Low Pressure Loss: When fully open, the flow path is straight and unrestricted, resulting in negligible pressure drop. The medium flows smoothly without sediment accumulation inside the valve body.
2.Excellent Wear and Erosion Resistance: The valve’s ball and seat form a shear action during operation, effectively preventing scaling and abrasion. During closing, the ball only contacts the seat at the final stage, minimizing wear. Suitable for conveying media with suspended solids, fine particles, or crystallized substances.
3.Ideal for Slurry and Abrasive Media: The straight-through flow path and eccentric shaft design ensure stable operation with minimal flow resistance and vibration, making it well-suited for harsh slurry applications.
4.Reliable Sealing: Zero leakage under proper working conditions. The ball and seat ensure tight shutoff even under high-pressure, high-frequency cycling conditions, resulting in extended service life.
5.Easy Maintenance: The valve can be serviced without removing it from the pipeline. Seat and packing replacement can be done online, minimizing downtime.
6.Wide Range of Applications: Suitable for water, wastewater, slurry, ash, steam, natural gas, oil, and other industrial fluids, including those with corrosive or abrasive content.
1、Design and manufacture:GB/T 12237-1989
2、Inspection and test:GB/T 13927-1992
3、Flange connection:GB/T 9113.1-2000
4、Structure length:JD-2004
| Body | Grey cast iron | Ductile Iron | Cast steel |
| Bonnet | Grey cast iron | Ductile Iron | Cast steel |
| Stem | 2Cr13 | 2Cr13 | 2Cr13 |
| Seat | Stainless steel | Stainless steel | Stainless steel |
| Spherical | Ductile iron cover rubber, stainless steel | Stainless steel | Rubber covered steel / stainless steel |
| Hemisphere | Grey cast iron | Ductile Iron | Cast steel |

Pneumatic Eccentric Hemisphere Valves are ideal for high-viscosity, slurry, and fiber-containing fluids. Commonly used in:
Pulp & paper, chemical, power, and wastewater treatment industries
Suitable for abrasive, scaling, or clog-prone media
Offers tight shutoff, low flow resistance, and anti-blockage design
Discover our premium valve solutions and boost your efficiency. Contact
us now to find out how we can support your needs with top-quality
products and exceptional service.
0577—86938599
© Tang Gong Valve Group. All Rights Reserved.