Carbon steel valve

Carbon Steel Valves (Ball Valves) 2" 34x3.5x1.5x0.5x0.2 3 34x3.5x1.5x0.5x0.2 18 Valves 18 Valves... 

Other causes that contributed to the accident include (i) lack of slip-blind plates that would have prevented water from pipes entering into the MIC tanks via faulty valves, and (ii) use of carbon-steel valves, despite the fact that they corrode when exposed to acid (the leaking carbon-steel valve that allowed water to enter the MIC tanks was not earlier repaired as this was too expensive). 

A common mistake made by many plant operators and designers who do not use these or manufacturer s tables is assuming that if the process line is operating at a certain pressure, a valve of that same pressure class must be used. For example, if you have a fluid operating under 600 psi pressure at 500°F, you don t need a 600-pound valve. Note from Table 9-2 that a 300-pound carbon steel valve will operate within the code... 

Beplaoement of carbon steel valve trays by stainless steel sieve tra3 reduced frequency of required tray cleaning to remove scale. 

The main steam safety valves are direct acting, spring loaded, carbon steel valves. The valves are mounted on each of the main steam lines upstream of the steam line isolation valves, and outside containment. A schematic drawing of the main steam safety valves is given in Figure 5.4.13-2. The valve parameters are given in Table 5.4.13-2. For a description of overpressure protection equipment and components for the main steam system refer to Section 10.3.2. 

Potassium of 98—99.5% purity is suppHed in carbon steel or stainless steel dmms and cylinders. Potassium—sodium alloy is shipped in carbon or stainless steel containers (3, 10, 25, 200, 750 lbs (1.36, 4.54, 11.3, 90.7, and 340-kg)) having dip tubes and valves. 

Standard stainless steels have significantly greater corrosion resistance to oleum than carbon steel, but higher price may make these materials less economical, except for special services such as valves, Hquid distributors, oleum boilers, etc. 

Methyl bromide, when dry (<100 ppm water), is inert toward most materials of constmction. Carbon steel is recommended for storage vessels, piping, pumps, valves, and fittings. Copper, brass, nickel, and its alloys are sometimes used. Aluminum, magnesium, zinc, and alloys of these metals should not be used because under some conditions dangerous pyrophoric compounds may be formed. Many nonmetallic materials are also useful for handling methyl bromide, but nylon and polyvinyl chloride should be avoided. 

Carbon disulfide is normally stored and handled in mild steel equipment. Tanks and pipes are usually made from steel. Valves are typically cast-steel bodies with chrome steel trim. Lead is sometimes used, particularly for pressure reUef disks. Copper and copper alloys are attacked by carbon disulfide and must be avoided. Carbon disulfide Hquid and vapor become very corrosive to iron and steel at temperatures above about 250°C. High chromium stainless steels, glass, and ceramics maybe suitable at elevated temperatures. 

Silver Brazed Joints These are similar to soldered joints except that a temperature of about 600°C (1100°F) is required. A 15 percent silver, 80 percent copper, 5 percent phosphorus solder is used for copper and copper alloys, while 45 percent silver, 15 percent copper, 16 percent zinc, 24 percent cadmium solders are used for copper, copper alloys, carbon steel, and alloy steel. Silver-brazed joints are used for temperatures up to 200°C (400°F). Cast-bronze fittings and valves with preinserted rings of 15 percent silver, 80 percent copper, 5 percent phosphorus brazing alloy are available. 

Ferrous valves are also available in nodular (ductile) iron, which has tensile strength and yield point approximately equal to cast carbon steel at temperatures of 343°C (6.50°F) and below and only slightly less elongation. 

Carbon steel, low-alloy steels Transfer lines, beat exchanger shells, baffles, pump components, heat exchanger tubing, fan blades and shrouds, valves, screens, fasteners... 

Figure 7.19 Pits on a carbon steel check valve. Note how pits intersect to form areas of jagged metal loss. A steel prohe tip is in the photo. (Magnification 7.5x.)...

Carbon steel piping, valves, structurals and vessels operating at cryogenic and ambient temperatures. 

Carbon steel vent and drain valves had been fitted on an alloy steel system. 

Valve thickness 16 gage (0.060 in.), 4-legs Valve material carbon steel, see Table 8-24. 

Valves must be made of fatigue-resistant carbon or alloy steel or 18-8 stainless steel, depending upon the service. The 18-8 stainless and 12-14 chrome steel is often used for corrosive and/or high temperature service. Any springs, as in the plate-type valves, are either carbon or nickel steel. Valve passages must be smooth, streamlined, and as large as possi-... 

Electrical resistance boilers use banks of fixed, immersion-type, resistance heating elements (typically sheathed in seamless copper, Incoloy 800, or 316SS) to provide an energy source that is contained within a carbon-steel pressure vessel. The vessel is provided with a sight glass and all normal boiler controls, valves, and regulators necessary for automatic operation. The vessel is generally well insulated and housed within an enameled metal cabinet. Various electrical supply options are available. 

Agent same as anolyte circuit. Energetics piping to be PFA-lined carbon steel pumps to be titanium valves to be PFA-lined ductile cast iron agitators to be PTFE-coated stainless steel seals and gaskets to be Kalrez, PTFE, or PTFE-clad. Heat exchangers to be 304L stainless steel. Catholyte evaporator to be Inconel 690/625 hydrocyclones to be titanium. 

All valves Class 800 Class 800 Class 800 Class 800 Class 200 bronze Carbon steel Class 800 Carbon steel Class 800 flanged... 

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