Wedge gate valve is a kind of gate valve. It is named for its sealing surface and vertical center line at a certain angle, that is, the two sealing surfaces are wedge-shaped. Wedge gate valves are divided into rising stem wedge gate valves and non-rising stem wedge gate valves. In the rising stem wedge gate valve, the stem moves up and down, and the stem nut is fixed. The non-rising stem gate valve has a fixed stem, and the disc moves up and down to complete the opening and closing. The driving methods include: electric, pneumatic, manual, gas-hydraulic, etc., and the connection methods adopt flange type, welding type, and wafer type. Working Principle The opening and closing part of the wedge gate valve is the wedge, and the movement direction of the gate is perpendicular to the direction of the fluid. Wedge gate valve can only be fully opened and fully closed, not suitable for regulation and throttling. Wedge gate valve generally completes the opening and closing of the valve by moving the valve stem up and down with the rotating hand wheel. Structural Characteristics 1. Compact structure, reasonable design, light and flexible, good rigidity of the valve, smooth passage, small flow coefficient; 2. The sealing surface is made of stainless steel and hard alloy, which has a long service life; 3. With flexible graphite packing, the seal is reliable. Application Range Wedge gate valve is widely used in electric power, petroleum, chemical industry, metallurgy, mining, sewage treatment and other industrial fields, especially in the ash removal and coal washing plant equipment of power stations.

Resilient seated sealing gate valve utilizes the compensation effect of the elastic deformation of the overall rubber covering of the gate to achieve a good sealing effect, and overcomes the problems of poor sealing, water leakage and rust in general gate valves. Resilient seated sealing gate valve can be widely used in tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, shipbuilding, metallurgy, energy system and other working conditions, and it is used as a shut-off device on the fluid pipeline. Features of Resilient Seated Sealing Gate Valve: 1. Flat-bottom valve seat, no dirt accumulation, more reliable sealing. 2. The wedge is covered with nitrile rubber as a whole, and the internal parts of the valve are made of corrosion-resistant stainless steel and copper alloy materials, which can be used in the sewage system and adapt to the harsh working environment. 3. Small size, light weight, easy to install and maintain. 4. The valve stem is sealed with three O-rings, which greatly reduces the friction resistance when switching, and the switch is light and water-proof. 5. The valve body is made of precision casting, and the precise geometric dimensions make the valve body tight without any finishing work. 6. The copper nut and the elastic wedge are embedded in the joint, so that the two are closely integrated into one body, and there is no loosening or damage caused by the vibration caused by the water flow. 7. The valve body is coated with powder epoxy resin, which can prevent corrosion and rust of the valve body and can be used in sewage system. 8. The inside of the valve body is coated with non-toxic epoxy resin, and the inner and outer surfaces of the valve are completely covered with rubber, which will not rust or corrode, and can be used for raw drinking.

대망의 크리스마스가 다가오고 있습니다! 올해는 비즈니스 파트너가 크리스마스 전에 선물을 받을 수 있도록 DERVOS 는 한 달 전부터 준비를 시작했습니다! 첫째, 선물 선택. 실제로 우리 영업팀은 일상적인 커뮤니케이션에서 고객의 선호도와 요구 사항에 주의를 기울이는 경우가 많기 때문에 고객의 요구 사항에 부합하고 중국 전통 특성이 가득한 선물을 선택할 수도 있습니다. 둘째, 선물 포장. 가장 절묘한 선물을 받고 선물을 여는 기쁨을 유지하기 위해 각 선물은 아름답게 포장됩니다. 또한 각 판매마다 손으로 쓴 인사말 카드가 있습니다. 마지막으로 선물 전달입니다. 크리스마스 선물이 운송 중에 영향을 받지 않도록 하기 위해 DERVOS는 크리스마스 선물의 가장 바깥쪽 레이어에 충격 방지 진주 면과 완충 필름을 여러 겹 감아 파트너가 완벽한 선물 상자를 받을 수 있도록 했습니다. DERVOS는 당신이 선물을 받을 때 당신의 웃는 얼굴을 기대합니다. 오늘부터 DERVOS는 친구들로부터 많은 감사와 칭찬을 받았습니다! 그리고 DERVOS의 선물이 멋진 크리스마스를 함께할 수 있기를 바랍니다. DERVOS는 미리 메리 크리스마스와 번영하는 새해를 맞이하여 귀하와 귀하의 사랑하는 사람들을 기원합니다!