This is the fire pump room. Behind it is the fire fighting pool. This pipe is the suction pipe of the fire pump. The suction pipe is equipped with an rising stem gate valve. How can you tell if it's open or closed? Now that the rod is leaking. It's open. The valve plate is now lifted up and the water is flowing freely. When the handwheel is turned. The stem is not leaking out. The valve plate slams down like a guillotine. And the water is blocked. The valve is in a closed position. So we require this valve to be normally open.
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Why our brass valves are receiving so many customer retum orders? Because they have strong advantages in production process and technology. 1. the valve body is precision cast and polished which improves the pressure resistance and corrosion resistance. 2. CNC precision machining improves sealing perfomance and service life 3. all parts of the valve are assembled precisely. 4. each valve is strictly pressured tested to eliminate the risk of leakage 5. precise pa ckaging,suitable for long distance transportation Welcome to inquiry.
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ASTM stainless steel valves are widely used in petroleum, chemical, metallurgical, electric power and other industries, especially in high temperature, high pressure and corrosive media working conditions are more widely used
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Float valves are tested for each component after production; 1. Check that the valve stem and the screws at both ends are complete. 2. check whether the ball marking is clear, whether the surface of the ball is flat and without leakage point. 3. check whether the opening and closing of the valve body is flexible. 4. assemble the parts and check the tightness of the threaded connection. 5. Check whether the weight of the product is up to standard. 6. Check whether the package is in accordance with the specifications, and whether the parts are complete.
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