Fixed ball valve is a new generation of high-performance ball valve, suitable for long distance pipeline and ordinary industrial pipeline, its strength, safe sex, such as resistance to bad environment stopped the special thinking, when the design is suitable for all kinds of corrosive and non corrosive medium. Compared with the floating ball valve, it works, the fluid pressure in front of the ball on the force transmitted to all bearing, won't make a sphere to the seat move, so the seat will not accept too much pressure, so the fixed ball valve torque is small, the seat of the small deformation, stable sealing performance, long using life, suitable for high pressure, large diameter. Advanced spring seat components, since the tight characteristics, complete the upstream sealing. Each Industrial Valves has two seats, each direction can be sealed, therefore device without flow limit is two-way. Technical parameters: this valve has two and three pieces of two kinds of body structure, the flange bolts to connect, sealing adopts strengthen ptfe inserted into the stainless steel circle, rims back no guarantee spring seat close to the ball, adhere to the seal. Up and down the stem are no PTFE bearing, reduce friction, easy operation, small no TAB at the bottom of the shaft, to ensure that the ball and seal it. All sizes available: valve flow aperture and divergence, pipeline diameter for pipeline cleaning. Applicable medium: water, gas, oil, natural gas and acid and alkali corrosive medium. Applicable temperature: - 196 ~ 350 ℃ drive mode: manual, pneumatic, electric, hydraulic, etc. Nominal diameter: DN25 - 8001' ~ 32“; Main features: 1) Easy operation: sphere by the upper and lower bearing support, reducing friction, ironed out due to the inlet pressure to promote a sphere with grand composed of seal seat sealing load and the formation of a large torque. （ 2) Sealed performance is reliable, PTFE sealing ring is embedded in the stainless steel seat, unisexual data metal seat end equipped with spring guarantee seal enough pre-tightening force, Industrial Valves sealing surface wear in the process of use, in the spring under the action of the valve to ensure good sealing performance. （ 3) Fire protection construction: in order to avoid because of heat or fire, make ptfe sealing ring burned, attack larger leakage, and develops the fire, set up fire prevention sealing ring between the sphere and valve seat, burned down in sealing ring, in under the action of spring force, the seat ring is hurtling into the sphere of metal to metal seal, the sealing effect have a certain level. Refractory experiment agree with APl6FA and APl607 specification request. （ 4) Automatic pressure relief function: when the valve is the stagnation of midplane medium abnormal pressure rise beyond spring pre-tightening force, the seat back out of the sphere, reach the effect of pressure relief automatically, automatic reset after unloading seat. （ 5) Discharge pipe: body are set up and down drain away, L can check the seat leakage can attack, at work, when the valve is in full open or close, removing the midplane pressure, can be directly to change packing; Can emit midplane retentate, reduce the pollution of the medium of the valve. Auxiliary sealing set up the system ( Customer need when ordering, please clarify) （ 6) This valve is designed to have the auxiliary emergency seating system, once the seal is damaged or rendered ten blue emergency conditions and cannot be sealed, after auxiliary sealing system corresponding to the sealing surface injection sealant can repair the sealing surface, reach the emergency seal. When walks medium impurity or contain a small amount of particles, for maintenance sealing surface, make sure to secure seal, also can install to the corresponding cleaner or smooth dose of seal face to stop cleaning. （ 7) Widely used in food, medicine, petroleum, chemical, natural gas, iron and steel, environmental protection, the papermaking walks line cut or flow of the medium. Also can install to the corresponding cleaner or smooth dose of seal face to stop cleaning.
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