【Product Usage】

Eccentric semi-spherical valve using eccentric body, eccentric sphere and valve seat, stem for rotary motion in the common track centering, closing the process more and more tightly closed, fully achieve good sealing purposes. Valve ball and seat completely out of the seal to eliminate wear and tear, to overcome the traditional ball seat and ball sealing surface is always wear problems, non-metallic elastic material is embedded in the metal seat, the seat metal surface is well protected. This product is particularly suitable for the steel industry, aluminum, fiber, small solid particles, pulp, coal ash, LPG and other media

【Features】 1, the structure of the principle of eccentric contract through the transmission mechanism to achieve the gate tight, adjust, close the purpose of sealing the metal surface ring with a hard surface contact seal, double eccentric structure in the open spool in the possession of the ball room , The flow of large cross-section, and the valve is not washed, closed when the spool is not washed, when the valve core spool along the valve seat progressive, effective removal of fouling obstacles to achieve a reliable seal. It is particularly effective for mixed-flow transport of two-phase mixed fouling solid precipitation

2, the valve hemisphere with bimetallic, base metal on the welding of different alloys, the valve seat is also the appropriate welding with a special deal with the sealing surface combined into corrosion, wear, high strength and other types to meet the needs of different occasions

3, tightly sealed, transmission of harmful gases up to zero leakage

4, the seal of the spool left compensation amount, when the valve to do wear, turn a little when turning again, any reliable seal to extend the service life. In addition, the user will be pressed nuts twist off, adjust or replace the valve seat is still available to avoid the valve seal failure, the whole scrapped the drawbacks

As a result of welding different alloys (or combination of ball) bimetal seal pairs can be used for matching wear, corrosion resistance, high temperature and demanding sealing conditions

1, the general valve: Specifications Model DN40-1600. Applicable to sewage treatment, pulp, urban heating and heating requirements of the occasion

2, oil chemical valve: Specifications DN40-1600. Applicable to crude oil, heavy oil and other oil products, chemical industry, weak corrosion, two-phase mixed flow media

3, special gas valve: Specifications DN40-1600. Applicable to gas, natural gas, liquefied gas transmission control

4, slurry dedicated valve: Specifications DN40-1600. For liquid, solid two-phase mixed flow or liquid transport in the chemical reaction crystallization or scaling of the industrial pipeline transportation

5, coal ash ash dedicated valve: Specifications DN40-1600. Applicable to power plants, hydraulic slag or gaseous pipeline control

【Executive Standard】

Design: GB12237-89

Flange connection: GB / T17241.6-1998, GB / T9115 (steel)

Structure length: GB12221-89