The structure of American standard gate valve features: 1. American standard gate valve for the drum or streamline modelling beautiful shape. For straight-through flow shape. Fluid resistance is small. 2. ANS1B16 products design and manufacture in accordance with national standards. 34, such as the United States BS1873 advanced foreign standards. 3. Shut down ( Brake disc) Taper sealing, and seat sealing surface adopt the closing force is small, scouring resistance, reliable sealing. 4. American standard gate valve seat for replacement type seat, can be arbitrary combination and close seal face material matching, in order to meet the requirements of working condition, prolong service life. American standard valves and is the main difference between gb valve: 1, the unit for national standard valve nominal diameter mm, American standard valve nominal diameter of the unit is in ( Inches) 。 2, flange standard American standard and national standard is not the same. 3, the structure is not the same length. 4, inspection requirements, American standard valve inspection requirements than the elevation. ( 法门) Is a fluid conveying system in the control unit, a cut-off, regulation, guide, to prevent the reverse flow, voltage regulator, the leakage of the shunt or overflow, and other functions. Used for fluid flow control system of the valve, from the most simple cut-off valve to extremely complex automatic control system used in all kinds of valves, its quite a wide varieties and specifications. American standard gate valve gate is high quality rubber, outsourcing in whole, in a foreign country can be called in rubber vulcanization technology use after vulcanization gate to ensure accurate geometry size, and rubber and ductile cast gate then, fall off not easily and elastic memory preferred. American standard gate valve performance depends on reasonable maintenance, as long as do maintenance to ensure its role in the production, so when the American standard Industrial Valves maintenance need to pay attention to the following: 1. To deal with the valve sealing performance testing, to ensure its performance. 2. If the Industrial Valves using the environment is relatively poor, vulnerable to the snow and rain, dust, sand and other dirt contamination, should install protective covering for the valve stem. 3. Operation of the valve should be in good condition, flange and bolt on the stent is complete, the thread, no loose phenomenon. 4. Installed and used in the valve, should be regular maintenance, to ensure its normal work. 5. Check the valve stem and valve stem nut abrasion of trapezoidal thread, the packing is outdated failure, etc. , and make the necessary change. 6. Should check whether the valve sealing surface wear, and according to the situation for repair or replacement.
There are a wide variety of which are scientifically tested to have positive effects on the ability to os&y valve. cast iron valve wedge gate valve is one of them.
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