For the purpose of preventing the stem from flying off resulting in abnormal rising of the inner pressure of valve,shoulder is fixed at the lower part of the stem.In addition,in order to prevent leakage resulting from burnout of packing set of the stem in a fire,thrust bearing is set at the contact position of the shoulder at lower part of the stem and valve body.Thus an inverse seal seat is formed which will prevent leakage and avoid accident.

OVIKO TOP ENTRY BALL VALVE is mainly used in pipeline and industry system and it has a top entry and on line maintenance function.It has a lot of advantages,such as small fluid resistance,simple structure,small volume,light weight,reliable saaling,convenience for operation and maintenance,open and close quickly,as well as start and close flexibly.

For the purpose of preventing the stem from flying off resulting in abnormal rising of the inner pressure of valve,shoulder is fixed at the lower part of the stem.In addition,in order to prevent leakage resulting from burnout of packing set of the stem in a fire,thrust bearing is set at the contact position of the shoulder at lower part of the stem and valve body.Thus an inverse seal seat is formed which will prevent leakage and avoid accident.

Oviko metal to metal seated ball valve owns not only various advantages of common industrial ball valves,but also particular and outstanding characteristics in heat-durability,especially when soft seal could not be used,such as in pipeline delivery of medium with high friction dust,slurry,and solid foreign matters mixture.

Product Name: Trunnion Ball Nominal Size: NPS 2"-16" (DN50-300) Pressure Rating: Class 150-600(PN20-100) Basic Material: ASTM A105,A350 LF2,A182 F304 A182 F316,A182 F6A,A182 F51 A182 F53,A564 630(17-4PH),Monel Coatings: *Nitridation *Nickel Plating *Chrome Plating *Tungsten Carbide *Spray Stellite *Spray Nickel Alloy *Spray Cobalt Alloy Etc.

Product Name: Floating Ball Nominal Size: NPS 2"-12" (DN50-300) Pressure Rating: Class 150-600(PN20-100) Basic Material: ASTM A105,A350 LF2,A182 F304 A182 F316,A182 F6A,A182 F51 A182 F53,A564 630(17-4PH),Monel Coatings: *Nitridation *Nickel Plating *Chrome Plating *Tungsten Carbide *Spray Stellite *Spray Nickel Alloy *Spray Cobalt Alloy Etc.

The Double Block And Bleed Valve is used to cut off or connect the media in various of Class150~Class2500. The valves made of different materials are suitable for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, oxidizer, urea and etc. The driving modes include manual operation and electric operation. The connection ends can be flange or butt welding.

The integral ball valve has such features small fluid resistance, compact structure, light weight, flexible opening and closing. The valve adopts the integral structure, so it is much smaller than the ordinary ball valve, and its weight is much lighter with good sealing performance. It is used to cut off or connect media in pipelines. The valves mde of different materials are suitable for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, acetic acid, oxidizing medium, urea and etc.

The jacket ball valve has such features as small fluid resistance, compact structure, light weight, good heat and cold insulation performance, flexible opening and closing. The jacket ball valve adopts the integral structure, so it is much smaller than the ordinary ball valve, and its weight is much lighter with good sealing performance. The media that are allowed to pass the jacket include 1MPa steam or cooled water, or special design can be made according to user requirements. It is mainly used in various systems in petroleum, chemical industry, metallurgy, pharmacy, food and other industries for transporting media of high viscosity that will be solidified under normal temperature.