In what applications are gate valves Z41Y and Z41H used respectively? Which one has a higher price
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In what applications are gate valves Z41Y and Z41H used respectively? Which one has a higher price
The price of Y is high. Y is the sealed face butt-welded STL Stellite alloy ； H is a surfacing alloy steel for sealing surfaces, and its purpose is wear resistance. There are differences between the corrosion resistance and durability of the two; the choice should be made based on the medium, operating temperature, and the material of the valve body. H is the conventional choice, while Y is used for corrosion resistance and high temperature and pressure conditions. To reduce costs, there is also H/Y; one side is H and the other side is Y. Refer to the internal component table in API 600.
It’s just that the material used for welding on the sealing surface is different; 13CR involves welding 13Cr wire on the valve’s sealing surface, which is denoted by the code H. STL refers to welding Stellite alloy on the sealing surface, represented by the code Y. Is this statement correct?
Z41H corresponds to 105/13CR? Z41Y corresponds to 105/13CR+STL?
By how much is Y’s price higher than H’s?
GB/T 32808 National Standard Sharing Site: http://c.gb688.cn/bzgk/gb/showGb?type=online&hcno=6B7A2580500E45D0470732E7E38A63DE; you’ll need to look up the specific details on your own
Do you need valves? H and Y indicate the material of the sealing surface: H refers to 13Cr series stainless steel, while Y refers to STL cemented carbide. STL is more wear-resistant, but its price is higher than that of 13Cr
Y is much more expensive than H; the sealing surfaces for welding Y are priced based on a few yuan per diameter
Y is generally of a single-size design