Price for installing soft sealed fixed ball valves

The upper fixed Ball valve meets the standard. Working temperature -46~200 ℃, especially suitable for fluid control in large-diameter and high-pressure pipelines. This series of fixed ball valves has dual blocking and relief functions, and the upper mounted structure allows for online component replacement, making maintenance convenient.

Core structure and principle of installing soft sealed fixed ball valve

Fully welded valve body

The valve body adopts integral welding technology, without bolt connection or flange interface, eliminating the risk of leakage at the traditional valve body connection.

The materials are mostly high-quality carbon steel, stainless steel or low-temperature steel, suitable for high-pressure, low-temperature or corrosive environments.

Fixed ball structure

The sphere is supported by upper and lower fixed axes and does not float with the pressure of the medium; The valve seat is spring loaded or driven by medium pressure, and the ball is sealed by bi-directional compression.

Suitable for high-pressure working conditions, especially for large-diameter pipelines.

SEALING SYSTEM

Valve seat material: metal hard seal or composite seal, temperature resistance up to 450 ℃, wear-resistant and erosion resistant.

Valve stem sealing: using V-shaped packing or a combination of corrugated pipe and packing to prevent medium leakage, suitable for high pressure and flammable and explosive scenarios.

Working principle

Opening process: The driving device drives the valve stem to rotate 90 °, aligning the spherical through-hole with the pipeline axis, and allowing the medium to flow in both directions.

Closing process: The sphere rotates to the point where the through-hole is perpendicular to the pipeline, and the valve seats on both sides tightly press the sealing surface of the sphere under the action of spring force or medium pressure, blocking the fluid flow.

Pressure characteristics: The higher the medium pressure, the tighter the fit between the valve seat and the sphere, and the sealing performance increases with the increase of pressure.