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Different stop valves have different usesRelease Date: May 14, 2017
Fluorine-lined shut-off valves are suitable for aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acids, strong oxidants at a concentration of -50 to 150 ° C, and are also suitable for strong alkali organic solvents of various concentrations and For other corrosive gases and liquid media.
The national standard globe valve is the most commonly used product in the globe valve series. The American standard globe valve implements ANSI and API standards. The sealing surface of the valve disc and valve seat is made of Stellite cobalt-based hard metal with different hardness. The alloy is made by surfacing, with reliable sealing, high hardness, abrasion resistance, high temperature resistance, corrosion resistance, good abrasion resistance and long life.
Needle valve is a small-caliber instrument valve, which plays a role of opening and closing and precise flow control in the instrument measuring pipeline system. It mainly includes power station instrument series, oilfield special series, American standard series, etc.
Low temperature cut-off valve usually refers to the valve whose working temperature is lower than -110 ℃, which is widely used in liquefied natural gas, liquefied petroleum gas and other low-temperature industries. From 2008, it is possible to manufacture globe valves suitable for temperatures up to -196 ° C. All parts are pre-treated with liquid nitrogen at low temperature to completely avoid leakage of seal deformation during use.
The plunger valve is also known as the plunger stop valve. Its sealing surface adopts a radial seal structure. The two elastic sealing rings sleeved on the polished plunger apply the load on the bonnet by the load bolt on the bonnet through the connecting bolt of the valve body and the bonnet. The elastic sealing ring around the plug is pressed to achieve a sealed stop valve.
The insulation jacket cut-off valve adopts the insulation jacket design, and the external heat source is used to circulate the heat outside the valve, which can effectively prevent the temperature loss when the medium passes through the valve and ensure the temperature of the medium.
Forged steel globe valve is designed and manufactured according to API 602 standard. It provides three bonnet design forms: bolt bonnet, welded bonnet, pressure self-tight sealing bonnet. Users can choose different forms according to their needs. Provide RF flange, NPT thread, SW welding type three connection methods.
The special oxygen stop valve is made of silicon brass or stainless steel with excellent material, which has the advantages of high mechanical strength, wear resistance and good safety. Used on oxygen pipelines, it has the best explosion-proof and flame-retardant performance, eliminates unsafe factors on the oxygen pipelines, and is widely used in steel, metallurgy, petrochemical, chemical and other oxygen engineering pipeline networks. In addition to the functions of ordinary valves, it also has its own characteristics. Strict oil-free measures are adopted during manufacturing, and all parts are strictly degreased before installation.
The bellows globe valve adopts the shape of stainless steel bellows design. The bellows reciprocating test is 10,000 times without failure, and the sealing performance is reliable. It is suitable for industries that are flammable, explosive, poisonous and harmful media, and can effectively prevent valve leakage.