Floating ball valve

Floating ball valve introduction

Floating ball valve is suitable for Class150 ~ Class1500, PN16 ~ PN100, JIS 10K ~ JIS 20K all kinds of pipeline, used to cut off or connect the medium in the pipeline, choose different materials, Floating ball valve can be used for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other medium.Floating ball valve can be widely used in papermaking, petrochemical, chemical industry, metallurgy, electric power, environmental protection, petroleum, light industry and other industrial departments of automatic control system.
 
Floating ball valve seat, designed with many years of ball valve manufacturing experience, to ensure the valve seal, low friction coefficient, small operating torque, a variety of seat materials, wide range of adaptability.Handle with correct switch: the flat head stem is adopted to ensure that the connection with the handle is not misaligned, so as to ensure that the switch state indicated by the handle is consistent with the valve.Locking device: To prevent incorrect operation of the floating ball valve switch, there are locking holes in the fully open and fully closed position of the valve to ensure that the valve is in the correct position.Stem fly-proof structure: the stem is lower mounted to prevent flying out under pressure. At the same time, Floating ball valve can form metal contact with the valve body after fire to ensure the stem seal.

Suitable medium: water, gas, oil, natural gas and caustic medium.
Applicable temperature: -196 ~ 350℃
Driving mode: manual, pneumatic, electric, hydraulic, etc.
Nominal size: DN 15-250 , 1/2" ~ 10"
  

Floating ball valve characteristics

1. O type floating ball valve with full bore or reduced bore design, small flow resistance.
2. Floating ball valve can adopt high platform structure, which can make the installation of electric/pneumatic actuator more professional.
3. Floating ball valve stem adopts the built-in type, shaft shoulder and PTFE (or reinforced graphite) thrust pad structure to prevent the valve stem from blowing out due to the pressure in the pipeline, while PTFE (or reinforced graphite) material reduces the opening and closing torque of the valve, so that the operation is more labor-saving.
4. With fire and anti-static structure, in Floating ball valve stem and ball valve body and ball valve stem and ball between the conductive spring, to avoid electrostatic lighting ignited flammable medium.Ensure system security.
5. Fire safe structure double protection, in case of fire and make the seal ring burn, the floating ball valve each sealing part can form a metal to metal hard seal structure.
 
The seat of floating ball valve is made of PTFE, RPTFE,PPL,Delvon,PEEK,metal seated and other materials, which has good sealing performance, but the material is relatively soft.Due to the soft material, but also to achieve a certain sealing specific pressure, is bound to increase the opening and closing torque, in order to improve the situation as far as possible, the company adopts the double bevel elastic sealing ring or V-groove elastic sealing ring structure design, using the pressure inside the pipe to push the ball, to help seal.When the medium pressure is small, the contact area between the sealing ring and the sphere is small, so there is a larger specific pressure to ensure a reliable seal.When the medium pressure is large, the contact area between the sealing ring and the sphere increases.Therefore, the sealing ring of Floating ball valve can withstand greater media thrust without damage.For the ball valve with very low working pressure, considering that the medium pressure can not ensure the reliable sealing of the seat, and the pre-tightening force after long-term use will attenuate, so for the ball valve under low pressure, ultra-low pressure or vacuum working conditions, the use of spring-loaded ball valve seat sealing structure, which can ensure the floating ball valve long-term reliable sealing.
 

Floating ball valve structure feature

1. Floating ball valve is not limited by the direction of installation, the flow of media can be arbitrary.Small fluid resistance, full size ball valves are basically no flow resistance.
2. Floating all valve simple structure, relatively small volume, light weight, easy maintenance.
3. Be tight and reliable.Floating ball valve has two sealing surface, and the ball valve sealing surface material is widely used in all kinds of plastics, good sealing, can achieve complete sealing.It has also been widely used in vacuum systems.
4. Flaoting ball valve is suitable for frequent operation, quick opening and closing, light weight.Easy to operate, fast open and close, from full open to full close only rotation 90°, convenient for remote control.
5. Easy maintenance, simple ball valve structure, sealing ring is generally active, disassembly and replacement are relatively convenient.
6. Good sealing performance of floating ball valve.When fully open or fully closed, the sealing surface of the ball and seat is isolated from the media, which will not cause erosion of the ball valve sealing surface when passing through.
7. Wide range of applications, sizes from small to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied.
8. Because the floating ball valve in the opening and closing process of wiping, so can be used in the medium with suspended solid particles.
9.Flaoting ball valve fluid resistance is small, no vibration, small noise.
 

Floating ball valve classification

According to pressure: high pressure floating ball valve, medium pressure floating ball valve, low pressure floating ball valve
According to runner type: full bore floating ball valve, reduced bore floating ball valve
According to channel position: 2 way floating ball valve,3 way floating ball valve,4 way floating ball valve
According to the temperature: high temperature floating ball valve, medium temperature  floating ball valve, low temperature floating ball valve, cryogenic floating ball valve
According to seal form: soft seal floating ball valve, hard seal floating ball valve
Assembly by stem: top entry floating ball valve, side entry floating ball valve
According to the connection form: flange floating ball valve, welding floating ball valve, threaded floating ball valve, clamp floating ball valve
According to driving mode: manual floating ball valve, automatic control floating ball valve (pneumatic floating ball valve, electric floating ball valve, hydraulic floating ball valve)