First, use, performance and characteristics Flat gate valve is a member of the gate valve family, like the wedge gate valve, its main function is to control the on-off of the pipeline, rather than regulating the medium flow in the pipeline. Its advantages are small fluid resistance, effortless opening and closing, short structure length, unlimited flow direction of pipeline medium, etc. The disadvantage is that the sealing pair has two sealing surfaces, which is more complicated to process and higher in cost. Compared with other valves, it has a longer opening and closing time. The relative friction between the sealing surfaces during opening and closing is easy to cause abrasions.
Second, product structure characteristics 1. The valve seat is sealed with a shape seal ring and a floating valve seat structure that applies a pre-tightening force, which makes the valve inlet and outlet sealed in both directions. Close the valve.
2. The valve seat is inlaid or overlaid with stainless steel (or cobalt-chromium-tungsten alloy) on the sealing surface, which has a double seal on metal and metal-to-metal. The sealing surface also removes the dirt on the gate.
3. For metal-to-metal sealed valves, a grease injection structure is provided on the outside of the valve body. The grease enters the valve sealing surface through the greaser and the valve seat, so that the valve reaches zero leakage.
4. The gate with the diversion valve always matches the sealing surface whether it is fully open or fully closed. The sealing surface is protected from direct flushing by the medium, thereby extending the service life.
5. When the valve is fully opened, the channel is smooth and straight, the flow resistance coefficient is extremely small, there is no pressure loss, and the pipeline can be cleaned through the wool ball.
6. The valve adopts a packing structure with self-sealing capability, which does not need to be adjusted frequently. It is extremely light to open and close, and has a reliable seal. The stuffing box is equipped with an auxiliary sealing grease injection structure. The sealing performance is absolutely reliable, and it achieves zero leakage. The disadvantage of leaking at the common valve packing is the most easy.
7. When the valve is closed, it can automatically remove the high pressure in the inner cavity to ensure safe use.
8. Fully enclosed structure, good protection performance, can adapt to all weather requirements.
9.The valve is provided with an indicator rod or observation window to indicate the opening and closing of the valve.
| Details of the clamp flat gate valve: |
Z83Y clamp flat gate valve has the characteristics of reliable sealing performance, small opening and closing torque, sulfur resistance and wear resistance, long service life, and can be used to clean the pipeline through wool balls. It is suitable for water, oil, natural gas, steam and other non-corrosive and corrosive media The opening and closing device in the pipeline system is especially suitable for petrochemical, oil, gas, long-distance pipelines and other fields.
Z23x-325 / 500 A / B type
| Working temperature: ≤110 ℃ |
Body material: high-quality carbon steel, alloy steel
Applicable medium: mud, water
External and connecting dimensio
120 ¡Á 6
130 ¡Á 6
150 ¡Á 6
180 ¡Á 8
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