Stainless steel gate valve repair is a common kind of stainless steel valve repair, stainless steel gate valve repair common damage: disc seat strain, disc seat, disc seat corrosion pitting, corrosion stem packing parts; Results in a sealing in the valve leakage and the valve switch is not flexible, the stainless steel gate valve repair case, is used in chemical raw materials of corrosion were stainless steel gate valve, this batch of gate valves also appeared: the disc seat strain, disc seat washout, disc seat corrosion pitting such damage, the valve appearance are covered with a layer of paint; This valve material is 304, my unit according to the situation, the valve to formulate the maintenance key: 1 body appearance in addition to paint 2 items within the valve and valve, the valve stem to remove impurities, restoring ontology material color, facilitate welding 3 surfacing welding was carried out on the local damage, finishing welding was carried out on the large area of damage to the disc seat 4 with the OLS - TMX400 desktop grinding machine, grinding leave allowance for welding layer of 0.1-0.5 mm 5 o les OLS - TMX400 bench grinder, good grinding disc seat for coarse, medium and fine grinding Other details not in detail, the following is my company the maintenance effect comparing pictures of stainless steel gate valve, this valve air test 1.6 Mpa to achieve zero leakage
Stainless steel gate before the maintenance and repair after the finished product
Body before and after the impurity cleaning effect 
Stainless steel gate valve disc effect before and after repair  
Copper nut impurity effect before and after cleaning
Repair the valve stem After welding of disc and seat
OLS - TMX400 table valve grinding machine, grinding disc and seat surface roughness Ra0.01 almost mirror effect  
Stem packing replacement Central packing replacement
Degreasing cleaning of the body The valve components before assembly 
The assembled stainless steel gate valve repair finished products  
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