Eccentric hemispherical valve in the appearance characteristics

Eccentric hemispherical valve is divided into two kinds in appearance structure

1. Top-mounted type: mainly for the medium with very serious corrosion and wear, the replacement and maintenance of the top-mounted structure in the damaged opening and closing parts is very convenient, without removing the whole valve from the pipeline, which greatly saves maintenance time and cost.

2. Side-mounted type: side-mounted type has compact structure and light valve quality, which is suitable for occasions requiring valve installation space.

Features of eccentric half ball valve

1. The eccentric semi-ball valve is of top-mounted structure. The valve installed on the pipeline can be directly on-line inspection and maintenance, which can effectively reduce the parking of the device and reduce the cost.

2. The eccentric half ball valve is a single seat design. Eliminate the valve in the cavity medium due to abnormal pressure and affect the use of safety problems.

3. Low torque design. The valve stem of special structure design can be easily opened and closed with a small handle.

4. No friction for opening and closing. This function completes the traditional valve due to the friction between the sealing surface and the impact of the sealing problem.

5. Wedge seal structure. The valve is provided by the mechanical force of the valve stem, the ball wedge pressure to the valve seat and seal, so that the sealing of the valve is not affected by the change of pipeline pressure difference, and the sealing performance is reliably guaranteed under various working conditions.

6. Self-cleaning structure of sealing surface of eccentric half ball valve. When the ball is tilted away from the valve seat, the fluid in the pipeline passes evenly along the sealing surface of the ball at 360 °, which not only eliminates the local erosion of the high-speed fluid on the valve seat, but also washes away the accumulation on the sealing surface to achieve the purpose of self-cleaning.

Product features of eccentric hemispherical valve

1. Sealing pair (valve core, valve seat)-bimetal, realizing metal spherical ring with hard seal, fire and explosion-proof;

2. The seal is tight. The seal between the valve core and the valve seat is spherical line contact, and zero leakage is realized by three-dimensional eccentricity;

3. The valve core of the sealing pair has a compensation amount. When the valve is used for a long time and the sealing pair is found to be worn, only the limit bolt on the handwheel side needs to be loosened, and then turn a little when closed, which can still achieve reliable sealing and prolong service life.

4, the compression sleeve can be screwed off, adjust or replace the valve seat, the valve can still continue to use, to avoid the current many valve seal failure after the entire scrap of the drawbacks.

Top-mounted eccentric half ball valve features

1. The supply pressure loss of the top-mounted eccentric semi-ball valve is small, the water loss is zero when fully opened, the flow channel is smooth, and the medium will not be deposited in the valve body cavity;

2. Top-mounted eccentric semi-ball valve supplies material wear resistance: there is shearing effect between the V-shaped open ball crown and the metal valve seat. During the closing process, the ball crown only leans against the valve seat at the moment after zui, without friction. The valve seat is made of wear-resistant nickel alloy, which is not easy to be washed and worn, so it is suitable for fiber-containing, tiny solid particles, slurry, etc.

3. Suitable for high flow rate medium: straight-through flow channel, solid eccentric crankshaft makes it suitable for high flow rate without vibration;

4. Top-mounted eccentric semi-ball valve has long supply life: no vulnerable parts. Due to the eccentric effect, there is no friction between the sealing surfaces when the valve is opened and closed, and the service life is long;

5, easy maintenance: the valve maintenance does not need to be removed from the pipeline, as long as the valve cover can be opened for maintenance;

6, widely used in water, sewage, containing small solid particles, water, steam, gas, natural gas, oil, etc