Zhejiang Guoji Fluid Control Co., LTD

Full set of industrial valve solutions, high temperature and high pressure power station valve, hard seal ball valve butterfly valve, hydraulic control valve, knife gate valve, blind valve

Full bore hard sealing ball valve

Full bore hard sealing ball valve, is a new generation of high-performance ball valve, suitable for long-distance transmission pipelines and general industrial pipelines, its strength, safety, resistance to harsh environment, etc. in the design of special consideration, suitable for all kinds of corrosive and non-corrosive media. Compared with the floating ball valve, it works, the fluid pressure in front of the sphere of all is passed to the bearing force, will not make a sphere to the seat to move, so the seat will not bear too much pressure, so the fixed ball valve torque is small, the seat of the small deformation, stable sealing performance, long service life, applicable to high pressure, large diameter. Advanced spring pre-seat assembly with self-tightening characteristics for upstream sealing. Each valve has two seats and can be sealed in each direction, so installation is two-way with no flow restriction. This valve is generally installed horizontally.
Fixed ball valve has two and three pieces of two types of body structure, flange bolt connection, sealing using enhanced PTFE inserted into the stainless steel ring, ring rear with a spring to ensure that the seat close to the ball, to maintain sealing. The upper and lower stem are equipped with PTFE bearings to reduce friction and save labor in operation. The bottom of the small shaft is equipped with an adjustment piece to ensure the joint position of the ball and the sealing ring. Full size: valve flow aperture to line id for line cleaning.
Fixed ball valve performance advantages:
1, operation labor saving: the ball is supported by upper and lower bearings, reducing friction, eliminating the excessive torque caused by the huge sealing load formed by the ball and the sealing seat driven by the inlet pressure. 2, reliable sealing performance: PTFE single material sealing ring embedded in the stainless steel valve seat, metal valve seat tail with a spring to ensure that the sealing ring enough pre-tightening force, the valve in the use of the sealing surface wear, under the action of the spring valve to ensure good sealing performance.
3, the structure of the fire prevention: to prevent because of heat or fire, make ptfe sealing ring burned, larger leakage occurs, and feeds 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 rapidly to the sphere, form the metal to metal seal, have a certain degree of sealing effect. Fire resistance test conforms to APl6FA and APl607 standard requirements. 4, automatic pressure relief function: when the medium pressure of the valve chamber stagnates abnormally when it exceeds the pre-force of the spring, the seat recede from the ball to achieve the effect of automatic pressure relief, and the seat automatically after pressure relief
5, discharge pipeline: the upper and lower parts of the valve body are provided with discharge holes, can check whether the valve seat leakage, in the work, the valve is fully open or fully closed, remove the pressure in the middle chamber, can directly replace the packing; It can discharge the residue in the cavity and reduce the pollution of the medium to the valve.
Fixed ball valve application range:
Fixed ball valve is suitable for Class150 ~ Class1500, PN16 ~ PN100, JIS 10K ~ JIS 20K all kinds of pipeline, used to cut off or connect the pipeline medium, choose different materials, can be respectively suitable for conveying water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, etc. It is widely used in petroleum refining, long-distance pipeline, chemical industry, paper making, pharmaceutical, water conservancy, electric power, municipal administration, steel and other fields. Fixed ball valve drive mode for worm gear and worm drive, manual, pneumatic or electric. Fixed ball valves are generally connected with flanges, but also can be welde