\r\n18<\/td>\r\n Alloy 20 and Hardfaced<\/td>\r\n Stellite<\/td>\r\n Stellite<\/td>\r\n Alloy 20<\/td>\r\n Alloy 20<\/td>\r\n <\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\nAPI Valve Trim Chart<\/h2>\r\n\r\n\r\n\r\nAPI Trim 12 & API Trim 10<\/h2>\r\n\r\n\r\n\r\n\r\nTrim 10 is 316 stainless on both seat surfaces and 316 stem\r\n\r\n\r\n\r\n\r\n\r\nTrim 12 is 316 stem, one seat surface 316, and one seat stellite #6 (hard faced)\r\n\r\n\r\n\r\n\r\n\r\nNeither trim allows 304 stainless.\r\n\r\n\r\n\r\n\r\n\r\nTypically people want the \"upgrade\" to trim 12 due to wear concerns and wanting to avoid galling by having dissimilar metals in seating contact. I would not assume somebody will accept trim 10 over trim 12.\r\n\r\n\r\n\r\n\r\n\r\nMost likely a CF8 (304) valve will have API trim 2 (Not trim 10) which is 304 stainless on both seat surfaces and 304 stems.\r\n\r\n\r\n\r\n\r\n\r\nAPI does not have a trim number for 304 with half satellite so often customers may say \"trim 12\" when what they really want is an all 304 stainless valve with one side hard-faced seat.\r\n\r\n\r\n\r\n\r\nWhat Are the Different Valve Trim Levels?<\/h2>\r\n\r\n\r\n\r\n\r\nValve trim levels range from AA through HH, and there are specific differences for each of these. Trim levels will determine the most suitable application for your needs and the required materials for the internal components of the valve.\r\n\r\n\r\n\r\n\r\n\r\nThe components affected by trim level changes include the:\r\n\r\n\r\n\r\n\r\n\r\n \tBody<\/li>\r\n \t Bonnet<\/li>\r\n \t Gate<\/li>\r\n \t Seat<\/li>\r\n \t Stem<\/li>\r\n \t Bonnet seal ring gasket<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\nValve Trim Level AA<\/h3>\r\n\r\n\r\n\r\n\r\nAA is your general non-corrosive trim level. The material used in the AA trim level is 4130 for all components with the bonnet seal ring gasket being 1018.\r\n\r\n\r\n\r\n\r\nValve Trim Level BB<\/h3>\r\n\r\n\r\n\r\n\r\nBB is used in a general and slightly corrosive environment. The body and bonnet will be made from 4130, the gate and seat will be 410 Stainless Steel, it will have a 17-4 Stainless Steel Stem, and a 316 Stainless Steel bonnet seal ring gasket.\r\n\r\n\r\n\r\n\r\nValve Trim Level CC<\/h3>\r\n\r\n\r\n\r\n\r\nThe CC valve trim type is used in a general, moderately corrosive environment with CO2. The body, bonnet, gate, and seats will all be 410 Stainless Steel. The stem will be made from 17-4 Stainless Steel, while the bonnet seal ring gasket will be 316 Stainless Steel.\r\n\r\n\r\n\r\n\r\nValve Trim Level DD<\/h3>\r\n\r\n\r\n\r\n\r\nDD-NL and DD-0.5 valve trim types are for sour, non-corrosive environments. All components in both trim levels are 4130 with the only difference being that DD-0.5 has a 17-4 Stainless Steel stem whereas the NL will most likely have a 4130 stem.\r\n\r\n\r\n\r\n\r\nValve Trim Level EE<\/h3>\r\n\r\n\r\n\r\n\r\nEE trim levels, like DD trim levels, are used in sour environments. EE-0.5 is used when the environment is slightly corrosive. EE-1.5 is used in highly corrosive environments with moderately abrasive CO2 present, and EE-NL is suitable when highly abrasive CO2 is present.\r\n\r\n\r\n\r\n\r\n\r\nIn all EE Trim levels, the body and bonnet are made from 4130 material. All gates, seats, and bonnet seal ring gaskets are Stainless Steel, with the gate and seats being 410 Stainless Steel and the bonnet seal ring gasket being 316 Stainless Steel. The difference in EE trim levels is the material used for the stems:\r\n\r\n\r\n\r\n\r\n\r\n \tEE-0.5 uses a stem made from 17-4 Stainless Steel.<\/li>\r\n \t EE-1.5 uses a stem made from 410 Stainless Steel.<\/li>\r\n \t EE-NL uses either an Inconel 718 or a Nitronic 50 stem.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\nValve Trim Level FF<\/h3>\r\n\r\n\r\n\r\n\r\nFF Trim levels are also used in a sour environment. FF-0.5 is for moderately corrosive environments with H2S. FF-1.5 and FF-NL are for highly corrosive environments with CO2 and H2S. The body, bonnet, gate, and seats are all made from 410 Stainless Steel, and the bonnet gasket is made of 316 Stainless Steel. The only part that is different between the three FF trim levels is the stem:\r\n\r\n\r\n\r\n\r\n\r\n \tFor FF-0.5 the stem is made from 17-4 Stainless Steel.<\/li>\r\n \t FF-1.5 uses a 410 Stainless Steel stem.<\/li>\r\n \t FF-NL uses either an Inconel 718 or a Nitronic 50 stem.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\nValve Trim Level HH<\/h3>\r\n\r\n\r\n\r\n\r\nThe last trim level is HH-NL, which is used in a highly corrosive and extreme service environment. The body and bonnet are both made from 4130 and have a 625 inlay throughout. The gate, seat, and stem are all made from 718 Inconel, and the bonnet seal ring gasket is 316 Stainless Steel.\r\n\r\n","parent":0,"count":3,"filter":"raw"},{"term_id":3738,"name":"china api 600 gate valve factory","slug":"china-api-600-gate-valve-factory","term_group":0,"term_taxonomy_id":3738,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3736,"name":"china api 600 gate valve manufacturers","slug":"china-api-600-gate-valve-manufacturers","term_group":0,"term_taxonomy_id":3736,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3729,"name":"gate valve api 600","slug":"gate-valve-api-600","term_group":0,"term_taxonomy_id":3729,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3732,"name":"valve api 600","slug":"valve-api-600","term_group":0,"term_taxonomy_id":3732,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3623,"name":"Valve Trim Chart","slug":"valve-trim-chart","term_group":0,"term_taxonomy_id":3623,"taxonomy":"post_tag","description":"\r\n\r\n\r\nWhat is Valve Trim?<\/h2>\r\n\r\n\r\n\r\n\r\nThe trim, particularly the mating elements that regulate the stream to the controller\u2019s demands, is at the heart of the control valve. Each process is distinct in its own right, necessitating particular flow control features. Valve trim includes the stem, plug, disc, seating surface, etc. It\u2019s also the plug and seat arrangement\u2019s actual shape. The flow properties of the valve are determined by the shape of the valve plug.\r\n\r\n\r\n\r\n\r\n\r\nType of Valves Valve Trims\r\n\r\n\r\n\r\n\r\n\r\n \t\r\n\r\n \tAngle Valves \r\n\r\n \t\r\n\r\n \tStem, Seat, Disc, Disc nut, back-seat bushing<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n \t\r\n\r\n \tGate Valves \r\n\r\n \t\r\n\r\n \tStem, Seat, Wedge, back-seat bushing<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n \t\r\n\r\n \tGlobe Valves \r\n\r\n \t\r\n\r\n \tStem, Disc, Seat, Disc nut, back-seat bushing<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n \t\r\n\r\n \tDisc Valves \r\n\r\n \t\r\n\r\n \tDisc, Disc nut, back-seat bushing<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n \t\r\n\r\n \tLift check valves \r\n\r\n \t\r\n\r\n \tSeat ring, Disc, Disc guide<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n \t\r\n\r\n \tSwing check valves \r\n\r\n \t\r\n\r\n \tSeat ring, Disc, Disc nut, Disc nut pin, Disc holder, Disc holder pin, side plug, carrier pin<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n\r\n\r\nValve Trim - Disc<\/h3>\r\n\r\n\r\n\r\n\r\nThe first valve trim part is a disc. The disc is the part that allows, throttles, or stops fluid flow depending on its position. Types of disks define the name of the valve such as gate, ball, plug, and needle valve\u2019s disk are also of the same shape as the name.\r\n\r\n\r\n\r\n\r\n\r\nA valve disc could be cast, forged, or fabricated. The valve disk is sometimes required hard facing to improve wear resistance. The disk needed a smooth machine surface to reduce friction with the seat. The valve disk is a pressure-retaining part.\r\n\r\n\r\n\r\n\r\n\r\nThat means the disk holds the pressure. When the valve is open, the disc does not perform pressure-retaining or -containing functions. However, when the valve is closed, the disc performs pressure-retaining functions.\r\n\r\n\r\n\r\n\r\n\r\nA disc rests against the stationary valve seat when the valve is in the closed position. It can be moved away from the seat by the movement of the stem. However, in check and safety-relief valves, fluid flow and pressure move the disc away from the seat.\r\n\r\n\r\n\r\n\r\nValve Trim - Seat<\/h3>\r\n\r\n\r\n\r\n\r\nThe seat provides the seating surface for the disk. Here, you can see the gate valve seat in the above image. A valve may have multiple seats. In the case of a globe valve and swing check valve, there is one seat. A gate valve and ball valve have two seats; one on the upstream side and the other on the downstream side.\r\n\r\n\r\n\r\n\r\n\r\nThe valve leakage rate is directly proportional to the effectiveness of the seal between the valve disc and seat(s). Valve seats may be integral or replaceable rings. Valves are generally provided with a screwed, welded, or integrally cast or forged seat and hardened by heat treatment or by the hard facing of Stellite weld overlay.\r\n\r\n\r\n\r\n\r\n\r\nA fine surface finish for the seating area is necessary for proper sealing. Some ball valves & plug valves used the non-metallic seat for non-critical services. Valve manufacturers have developed several designs of combination valve seats involving elastomer and metal seats that are effective in achieving the desired leak tightness, which cannot be achieved only by metal seats.\r\n\r\n\r\n\r\n\r\nValve Trim - Back Seat<\/h3>\r\n\r\n\r\n\r\n\r\nAnother component of the valve that does not maintain pressure is the back seat. A stem shoulder serves as the foundation of the back seat. The stem creates a seal when it is fully extended. As a result, the valve shell\u2019s leaking into the packaging chamber, and the environment is stopped.\r\n\r\n\r\n\r\n\r\nValve Trim - Stem<\/h3>\r\n\r\n\r\n\r\n\r\nThe stem connects the actuator and disk. It moves and positions the valve disk. The valve stem transports the required motion to the disc, plug, or ball for opening, closing, or positioning the valve. The stem connects the actuator, handwheel, or lever of the valve at one end and the disc on the other end.\r\n\r\n\r\n\r\n\r\n\r\nIn gate and globe valves, the linear motion of the disc opens or closes the valve, while in the plug, ball, and butterfly valves, the disc rotates to open or shut the valve. Stems are typically forged from stainless steel and connected to the disk by threaded or welded joints.\r\n\r\n\r\n\r\n\r\nValve Trim - Yoke<\/h3>\r\n\r\n\r\n\r\n\r\nYoke is another name for yoke arms. A yoke connects the valve\u2019s actual mechanism to the valve body or bonnet. The yoke and the bonnet are built as a single piece to cover multiple valves. The yoke nut and yoke bushing are located on the top side of the yoke.\r\n\r\n\r\n\r\n\r\n\r\nThe Yoke is constructed tough enough to endure the forces, moments, and torque generated by the actuators.\r\n\r\n\r\n\r\n\r\nValve Trim - Yoke Brushings<\/h3>\r\n\r\n\r\n\r\n\r\nIt is the area where the valve stem enters through the top of the yoke and the internally threaded nut is held in place. Depending on which way the nut is rotated, the stem moves up and down in certain valves, such as gate and diaphragm valves. The yoke nut is positioned permanently over some valves, and the stem is rotated via it.\r\n\r\n\r\n\r\n\r\n\r\nThe yoke bushings are composed of softer material than the stem in order to need the least amount of effort to operate. On the valves that need a lot of effort to open or close, anti-freeze yoke sleeve bearings are provided. By doing this, the friction between the yoke bushing and the toughened stem will be reduced.\r\n\r\n\r\n\r\n\r\nValve Trim Chart<\/h2>\r\n\r\n\r\n\r\n\r\nThe removable and replaceable valve internal parts that come in contact with the flow medium are collectively termed as Valve trim. These parts include valve seat(s), disc, glands, spacers, guides, bushings, and internal springs. The valve body, bonnet, packing, et cetera that also come in contact with the flow medium are not considered valve trim.\r\n\r\n\r\n\r\n\r\n\r\nA Valve's trim performance is determined by the disk and seat interface and the relation of the disk position to the seat. Because of the trim, basic motions, and flow control are possible. In rotational motion trim designs, the disk slides closely past the seat to produce a change in flow opening. In linear motion trim designs, the disk lifts perpendicularly away from the seat so that an annular orifice appears.\r\n\r\n\r\n\r\n\r\n\r\nValve trim parts may be constructed of assorted materials because of the different properties needed to withstand different forces and conditions. Bushings and packing glands do not experience the same forces and conditions as the valve disc and seat(s).\r\n\r\n\r\n\r\n\r\n\r\nFlow-medium properties, chemical composition, pressure, temperature, flow rate, velocity, and viscosity are some of the important considerations in selecting suitable trim materials. Trim materials may or may not be the same material as the valve body or bonnet.\r\n\r\n","parent":0,"count":3,"filter":"raw"}],"taxonomy_info":{"category":[{"value":1,"label":"Uncategorized"}],"post_tag":[{"value":2477,"label":"API 600"},{"value":3735,"label":"api 600 cast steel gate valve"},{"value":3550,"label":"API 600 Gate Valve"},{"value":3733,"label":"api 600 gate valve factory"},{"value":3737,"label":"api 600 gate valve suppliers"},{"value":3734,"label":"api 600 standard"},{"value":3625,"label":"api 600 trim chart"},{"value":3730,"label":"api 600 valve"},{"value":3731,"label":"api 600 valves"},{"value":3621,"label":"API Trim 12"},{"value":3738,"label":"china api 600 gate valve factory"},{"value":3736,"label":"china api 600 gate valve manufacturers"},{"value":3729,"label":"gate valve api 600"},{"value":3732,"label":"valve api 600"},{"value":3623,"label":"Valve Trim Chart"}]},"yoast_head":"\nAPI 600 Gate Valve - API 600 Valve Trim Chart | ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/pt\/api-600-gate-valves-zeco-valve-industrial-valve-manufacturer.html\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"API 600 Gate Valve - API 600 Valve Trim Chart | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"ZECO Valve is a proud industrial API 600 cast steel gate valve manufacturer. 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<\/figure>\n<\/div>\n\n\n![\"\"](\"https:\/\/zecovalve.com\/wp-content\/uploads\/2022\/09\/api-trim-number-chart-1024x989.jpg\")
<\/figure>\r\n\r\n\r\n\r\n