Introduction to Q347 PN16 and PN25 eccentric hemispherical valves

　　Q347Eccentric hemispherical valveBy utilizing an eccentric valve body, eccentric sphere, and valve seat, the valve stem automatically centers on a common trajectory during rotational motion, and becomes tighter as it closes, achieving a good sealing effect. The ball and seat of the valve are completely detached, eliminating the wear of the sealing ring and overcoming the problem of continuous wear between the traditional ball seat and ball sealing surface. Non metallic elastic materials are embedded in the metal seat, and the metal surface of the valve seat is well protected. This product is particularly suitable for media such as steel industry, aluminum industry, fibers, small solid particles, pulp, coal ash, petroleum gas, etc.

Characteristics of Q347 PN16 and PN25 eccentric hemispherical valves

1. Its structure adopts the principle of eccentric clamping to achieve the purpose of locking, adjusting, and closing through the transmission mechanism. The sealing pair is a metal surface ring hard surface contact seal. The double eccentric structure has a large flow cross-section when the valve core is located in the ball storage chamber during opening, and the valve core is not flushed when closing. When opening, the spherical surface of the valve core gradually moves along the valve seat, effectively removing scaling obstacles and achieving reliable sealing. It is particularly effective for mixed flow transportation of two-phase mixtures that are prone to scaling and solid precipitation.

2. The hemisphere of the valve is made of bimetallic material, and different alloys are welded onto the base metal. The valve seat is also welded with corresponding special treatment, and the sealing surface is composed of various types such as anti-corrosion, wear-resistant, and high-strength to meet the needs of different occasions.

3. Sealed tightly and capable of delivering harmful gases with zero leakage.

4. The valve core of the sealing pair has a compensation amount, and when the valve wears out, it can rotate slightly when closed, ensuring reliable sealing and extending its service life. In addition, the user can unscrew the compression nut, adjust or replace it, and the valve seat can still be used, avoiding the disadvantage of the entire machine being scrapped after the valve seal fails.

Q347 Type PN16, PN25 Eccentric Hemisphere Valve Parts Material

Performance parameters of Q347 PN16 and PN25 eccentric hemispherical valves

Q347 type PN16, PN25 eccentric hemispherical valve external dimensions

Structural diagram of Q347 PN16 and PN25 eccentric hemispherical valves