The dome valve type Ⅰ ( Spherical gas lock valve) USES and features:

dome valve ( Spherical gas lock valve) Is a new type of quick closing valves, it USES the international most advanced air seal structure, the valve opening and closing of valve core and no contact between inflatable sealing ring, sealing ring using a specially formulated rubber, which can be widely applied to the powder material seal, a key component in the pneumatic conveying system, widely used in electric power, metallurgy, chemical industry, food, pharmaceutical and other fields.

with sealing ring, valve core movement out of contact, small resistance, long service life;

adopts pneumatic sealing ring, sealing well;

pneumatic actuator driven by linear cylinder or totally enclosed fan cylinder, the output torque is big, reliable performance and can meet the working in harsh operating conditions. Main technical parameters:

dome valve type

no. : QQF ( B)

mouth size: 6, DN200, DN250, 12

nominal pressure: 1. 0 mpa

working temperature: 200 ° C or less

control air pressure: 0. 4 to 0. 6 mpa,

: gas consumption, 1 ~ 3 l/time

cylinder output torque: 75 ~ 650 n. M / 5 bar actuating medium:

powder and granular materials dome valve working principle:

dome valve core is a spherical dome, the dome valve in the process of switch, valve core and keep about 2 mm gap between the rubber sealing ring, valve core and the rubber sealing ring can be in the form of contactless movement, the purpose is to make the valve core and does not produce friction between the rubber sealing ring, reduce wear and tear. Dome valve pneumatic actuators for full sealed linear or fan cylinder, direct drive dome valve, effectively prevent the dust into the wear and leakage phenomenon. When dome valve closed, rubber seal aeration, expansion, holding pressure on the spherical dome valve core, thus forming a very reliable sealing ring belt, blocked the flow of the material in the pipeline.

according to different occasions, the dome valve core with different materials, different surface hardening treatment, using the valve core is smooth and hard surface, ensures good close contact with the rubber sealing ring, in order to ensure reliable sealing. Rubber seal adopts special rubber, high temperature resistance, corrosion resistance, wear resistance, aging resistance and other characteristics, long service life. When the valve opens, mouth full circulation without stop. The Industrial Valves is suitable for gas, liquid and semiliquid, solid powder material, etc.

dome valve note:

rubber seal charge pressure should guarantee at 0. 40 - 0. Mpa and above 60 delivery pressure 0. 15 mpa, cylinder pressure 0. 45 - 0. 65 mpa, the use of clean, dry, oil-free compressed air.

installation, use points

1, read this manual carefully before installation, and check valve type, size and technical parameters.

2, it is forbidden to install the valve after welding flange, to avoid damage to the valve seal. Tube reserved valve installation distance should be appropriate, on both sides of the flange gasket.

3, two pipe center center should maintain coaxial with the valve size and flange face should level off, do not allow the large deflection of the flange surface, to guarantee the normal work of the valve clamping and. Tighten bolts should be uniform.

4, the valve before delivery has been adjusted and dynamic test, pneumatic connection intact.

main parts, wearing parts for seal, valve core.

unique dome valve when processing mill cut materials, embedded in the dome seat expandable pressure sealing ring, ensure the valve pressure difference before and after work. Elastic expandable sealing ring can be invagination of material particles, avoids the material particles due to the pressure difference sliding occurs, wear of seating and sealing ring.

圆顶阀; Rated running 1000000 times before need to overhaul time, greatly reduces the maintenance cost and equipment shutdown losses. Pneumatic conveying system adopts dome valve ( 圆顶阀) To ensure the reliability and efficiency of the system operation.

design features materials grinding cut

slurry, bulk powder, particles, mass or dust will wear full of gas seal, lead to invalid seal. Expandable sealing ring provides continuous wear compensation. Differential pressure

pressure difference will speed up the traditional hard seal valve wear and expandable sealing ring provides continuous wear compensation.

high-temperature thermal expansion valve can undermine the dome

continuous motion; Expandable seal at 0 ℃ to 200 ℃ temperature range provides the wear compensation; Special structure of the dome valve can work above this temperature range.

shut down and seal rotation of the dome in the body of the valve core displacement action to turn, compacted material column is completely filled with material dome valve therefore through the fill material shut down and seal. Wide application

traditional hard seal valve cannot conditions in both the above any application environment and stable operation, the dome valve is capable of. Dome valve has successfully in wide application industry more than 10000 projects.

reliability strong dome valve design, can be competent for other valve cannot afford to work. In the standard application to test only once in every 1 million runs.

'dome valve manufacturers recommend Chinese pump valve: http://www. zgbfw。 com/search/supplysea。 aspx吗? 类型= 1 & Key = d4 b2 b6 b7 a5 % % % % % % a7

keywords: dome valve Ⅰ type ( Spherical gas lock valve) Purpose and characteristics of the dome valve working principle of quick closing valves
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