Implementation Standards

1. Design and manufacturing: GB/T26146-2010, API608;

2. Inspection and testing: GB/T13927-2005, API598

3. Flange connection: JB/T79.1~4-2000, ASME/ANSIB16.5;

4. Structural length: GBIT12221-2005, ASME/ANSI B16.10;

Features

1. General valve: suitable for sewage treatment, pulp, urban heating and other occasions with strict requirements.

2. Special valve for petrochemical industry: suitable for various oil products such as crude oil, heavy oil, corrosion-resistant and two-phase mixed flow media in the chemical industry. Temperature resistance can reach 425℃.

3. Special valve for gas: suitable for the transportation control of coal gas, natural gas and pulverized gas. Product structure The characteristics are that the sealing ring is welded on the valve with different chromium-containing alloys, which are tightly sealed and corrosion-resistant.

4. Special valve for slurry: suitable for industrial pipeline transportation with crystallization or scaling in pulverized and solid two-phase mixed flow or chemical reaction in pulverized transportation. Product structure characteristics According to the different media and temperature requirements required by customers, the ball is made of chromium-molybdenum and vanadium alloys, and the valve seat is made of chromium, molybdenum alloy, chromium alloy, and stainless steel alloy welding rods to meet the needs of different slurry transportation.

5. Special valve for coal powder ash: suitable for power plants, alumina, hydraulic deslagging or gaseous transportation pipeline control. The product requires wear resistance. The ball adopts a combined ball bimetal with high rigidity and very wear-resistant. The valve seat adopts surfacing wear-resistant steel or. The soft seal is easy to replace and other advantages.

Advantages

1. The structure of the valve design with external steps matching the internal steps of the valve body design effectively prevents the ball from getting stuck and the valve seat from detaching.

2. Large flow area without flow resistance: full flow channel design, the flow path is completely unobstructed. After opening, the ball is hidden in the valve cavity, and there is no flow resistance and direct flow channel. The flow channel is unobstructed and there will be no dust accumulation or jamming. The pressure loss is small and the medium will not be deposited in the valve cavity.

3. Easy to switch: Due to the principle of eccentricity, the ball and the valve seat are completely separated when opening, without any contact, the opening and closing torque is small, and the opening and closing can be completed by turning 90 degrees, which is easy to operate.

4. Reliable sealing and long service life: Under the action of double eccentricity, when this valve is closed, the eccentric ball and the valve seat are more and more tightly closed, and the purpose of good sealing is fully achieved; there is a shearing and squeezing effect between the hemispherical cut ball and the valve seat, which can effectively remove the scaling or dirt on the sealing surface and maintain a good seal. Under the action of double eccentricity, when the valve is opened, the ball and the valve seat are completely separated without any contact, and there is no friction between the ball and the valve seat, which effectively overcomes the problem of constant friction between the ball sealing surface and the valve seat sealing surface of the traditional ball valve, so the sealing surface is well protected. The sealing surface is wear-resistant, and there is compensation between the valve seat and the ball. When the valve seat is worn, it can still be reliably sealed by turning it a little when closed. In addition, the valve seat can be adjusted or replaced to extend the service life. This is the most significant feature of the hemispherical valve.

5. Full flow diameter, the inlet and outlet are completely equal to the nominal diameter, no flow resistance, no pressure loss, large flow capacity and energy saving.

Valve body material: GB:WCB; ASTM:A216 WCB

Nominal pressure PN: 1.6～6.4MPa;150-600Class

Nominal diameter DN: 50～2000mm

Leakage rate: ＜0.1×DNmm³/s〔Comply with GB/T13927-2005 standard〕

Operating temperature T: Soft seal: -40～350℃; Hard seal: -50～600℃

Applicable media: Natural gas, steam, oil, acid, alkali, coal powder, coal ash, waste residue, mud, granular, fiber and other media

Operating mechanism: Worm gear drive, electric drive, pneumatic drive, hydraulic drive