Product details:

The structure of the eccentric semi-ball valve adopts the principle of eccentric-tacit agreement through the transmission mechanism to reach the tightening, adjustment and closing. The sealing side is the contact surface of the metal surface with the hard surface contact, the double eccentric structure is opened when the spool is in the ball chamber, Section of the large, and the valve is not washed, closed when the spool is not washed, open into the valve core spherical along the seat gradually, effectively remove the fouling obstacles to achieve a reliable seal. It is particularly effective for mixed flow transport of solid phase fouling solids. The second feature of the valve hemisphere with bimetallic, base metal on the welding of different alloys, the valve seat is also the corresponding surfacing by special treatment, sealing surface combination into anti-corrosion, wear, high strength and other types to meet the different Occasions, the third feature of the seal is strictly prohibited, the transmission of harmful gases up to zero leakage, the fourth feature is the seal of the spool left with compensation, when the valve seat wear (seat hardness lower than the spool), when closed And then turn a little, can still be reliable seal, to extend the service life, in addition, the user will tighten the nut to remove, adjust or replace the seat is still available, to avoid the current number of valve seal failure of the entire drawbacks.

So the welding of different alloys (or combination of ball) bimetallic seal of the matching can be used for wear, corrosion resistance, resistance to temperature and also require strict sealing of different industrial sectors.
 

The main purpose of the ball valve and product features:

1, general valve: Specifications Model PN1.0-4.0Mpa, DN40-1600. Applicable to sewage treatment, pulp, urban heating and other requirements of tight occasions.　　

2, oil and chemical valve: specifications DN40-1600, PN1.0-4.0Mpa for crude oil, heavy oil and other types of oil, chemical industry, weak corrosion, two-phase mixed media. Temperature resistance up to 425 ℃.　　

3, gas dedicated valve: specifications DN40-1600, PN1.0-4.0Mpa for gas, natural gas, liquefied gas transmission control. Product structure is characterized by sealed welding different chromium-containing stainless steel, sealed tight, corrosion-resistant.　　

4, slurry special valve: specifications DN40-1600, for liquid, solid two-phase mixed flow or liquid transport in the chemical reaction of crystallization or scaling of the industrial pipeline transportation. Product structure characteristics According to customer demand medium, the temperature requirements are different, sealed by the vice valve with chrome molybdenum vanadium alloy surfacing, the valve seat with chromium molybdenum alloy, chrome alloy, stainless steel welding electrode welding to meet the needs of different slurry transport.　　

 5, coal ash special valve: Specifications DN40-1600, for power plants, hydraulic slag or gaseous transport pipeline control. Products require wear resistance, the spool with a combination of ball bimetallic, with a very high stiffness and very wear-resistant, the seat with the overall wear-resistant No. 1 or full welding, and has the advantage of hard sealed ball valve. 
 
 Ball valve Features:
 1, large circulation area, flow resistance is small. This is because after opening the spool is located in the ball room, fluid through.

2, the operating torque is small, turn 90 degrees to open and close to complete, light operation.

3, tight seal, double eccentric metal hard seal. Scaling does not affect the opening and closing, which is the most significant advantage of the semi-ball valve

4, long service life, sealed deputy wear, and the amount of compensation, the valve seat can be adjusted or replaced.
 

Standard Specification:
 Design and manufacture of GB / T 12237-2007 
 Structural length standard: GB / T 12221-2005 
 Connection flange standard: GB / T 9113 
 Pressure temperature grade: GB / T 12224-2005 
 Test inspection standard: GB / T 13927-2008
 

Parts materials and conditions:

 The main performance parameters:

 Shape and connection dimensions