Advantages of sanitary manual butterfly valves:
1. Butterfly valve rubber sealing ring and valve plate are imported, which guarantees the performance and service life of the butterfly valve.
2. The high-precision CNC lathe finishing valve body ensures the reliable interchangeability of the butterfly valve, eliminating the trouble of not being able to guarantee the performance of the rubber due to the replacement of the rubber.
3, the valve stem is fitted with a nylon sleeve, which reduces the friction and thus opens and is flexible and easy.
4. The steel parts are made of stainless steel, the rubber is made of food rubber, and the sanitary quality is high.
5. The diameter of the valve body and the inner diameter of the pipe are narrow. The valve plate with a streamlined shape is in the same direction as the fluid. The flow rate is large and the resistance is small, and no material accumulates.
6. The handle adopts the pulling type and the pulling type, which can withstand large operating torque and is not easy to be broken.
7. The opening and closing range is 0~90 degrees, which can be fixed at every 15 degrees, with adjustable, quick opening and closing, and convenient operation.
8. The valve body is detachable and connected, with simple structure and convenient maintenance.
9, the shape is light and beautiful, the surface is bright and not sticky, no burr tied hands.
10. After strict strength and sealing test, quality is guaranteed.
11. Sampling is carried out with a fatigue life test of not less than 30,000 times to ensure its service life. A butterfly valve is a valve in which a closing member (valve or disc) is a disc that rotates around the valve shaft to open and close, and is mainly used for cutting and throttling on the pipe. The butterfly valve opening and closing member is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjusting.
The butterfly valve is normally less than 90° from full opening to full closing. The butterfly valve and the butterfly rod have no self-locking capability. For the positioning of the butterfly plate, a worm gear reducer is added to the valve stem. The use of a worm gear reducer not only enables the disc to have a self-locking capability, but also stops the disc at any position and improves the valve's operating performance.
The wrist joint external fixation fully considers the physiological characteristics of the wrist joint and the structural stability of the biomechanics, so that the metacarpophalangeal joint can be completely bent freely, and the tendons and ligaments of the fingers and wrists can be relatively relaxed. Moreover, the insertion method, length and stress of the bone traction needle are also considered, and the overall force of the bone traction needle is relatively uniform.
The ulna radius external fixator fractures is relatively simple, generally unilateral fixation, or simple combination fixation, generally should not fix the upper and lower radioulnar joints. Radial external fixation stenting has a good effect on the treatment of fracture. Premature removal after surgery is not appropriate, which is easy to cause dislocation and affect fracture healing. Functional exercise can be carried out gradually after four weeks of plaster external fixation, when the wrist joint function should gradually return to normal.
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