52NEMA Enclosure Classification
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52NEMA Enclosure Classification
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This page includes excerpts from ASME, ANSI, NEMA and other agencies that develop standards for the valve and control industry. At the bottom of this page you will find links to these agency sites.National Electrical Manufacturers Association (NEMA) Classifications for Electrical Equipment and enclosures
*NEMA classifications. The NEMA classifies electrical equipment and enclosures for industrial applications as follows: I. General purposeProtects against indirect splashing of dust and light
primarily prevents con used indoors and under normal atmospheric conditions.Similar to type I, with addition of drip s used where condensation may be severe as in cooling rooms and laundries.Protects against weather hazards su used outdoors on ship docks, for construction work, and in tunnels and subways.Must exclude at least 65 gal/mm (247 L/m) of water from 1-in (25-mm) nozzle delivered from a distance of not less than 10 ft (3 m) for 5 mm. Used outdoors on ship docks, in dairies, and in breweries.Provided with gaskets or equiva used in steel mills and cement plants.Design depends on specified conditions
used for submersion in water, as in quarries, mines, and man holes.Meets application requirements class I of National Electrical C conforms with specifications of Underwriters' Laboratories, Inc.; used for atmosphere containing gasoline, hexane, naphtha, benzine, butane, propane, acetone, benzol, lacquer-solvent vapors, and natural gas.Type 8 enclosures are for indoor or outdoor use in locations classified as class I, Groups A, B, C, or fl as defined in the National Electrical Code.Type 9 enclosures are for use in indoor locations classified as class II, groups E, F, or G, as defined in the National Electrical Code.Meets application requirements class II of National Electrical C conforms with specifications of Underwriters'Laboratories, Inc.; used for atmospheres containing metal dusts, carbon black, coal or coke dust, flour, starch or grain dusts.II. DriptightIII. Weather resistantIV. Watertight (weatherproof) V. Dusttight VI. SubmersibleVII. Hazardous location (explosive gas or vapor) Type 8 enclosure (hazardous locations, oil-immersed) Type 9 enclosure (hazardous locations, dust-ignition proof) IX. Hazardous locations (combustible dust)ASME B16.34 - Valves - Flanged, Threaded, and Welding EndScope: This standard applies to new valve construction and covers pressure-temperature ratings, dimensions, tolerances, materials, non-destructive examination requirements, testing, and marking for cast, forged and fabricated flanged, threaded and welding end and wafer or flangless valves of steel, nickel-based alloys, and other alloys.ASME B16.11 - Forged Fittings, Socket-Welding, and ThreadedScope: This standard covers ratings, dimensions, tolerances, markings and material requirements for forged fittings, both socket-weld and threaded.API-598 - VALVE INSPECTION AND TESTINGScope: This standard covers inspection, examination, supplementary examinations, pressure and test requirements for resilient-seated, nonmetallic-seated (for example, ceramic), and metal-to-metal-seated valves of the gate, globe, plug, ball, check, butterfly types.API-607 - Fire Test for Soft Seated Quarter-turn ValvesScope: This standard covers the requirements for testing and evaluating the performance of straightway, soft-seated quarter-turn valves when they are exposed to certain fire conditions definedAPI STANDARDSAPI-Spec 6A, Wellhead and Christmas Tree Equipment, 17th Edition, February 1996(Includes Errata dated December 1996) Covers equipment utilized for pressure control systems for production of oil and gas. Specific equipment covered by thisspecification includes end a valves including surface and unde and wellhead and Christmas tree equipment (examples: casing head housings, casing and tubing head spools, hangers, connectors, fittings). Also covers repair and remanufacture of wellhead and Christmas tree equipment that was originally manufactured in accordance with the fifteenth or later edition of this specification. Since API Specification 6A is sent looseleaf, ring binders are available for purchase.API-Spec 6AV1, Verification Test of Wellhead Surface Safety Valves and Underwater Safety Valves for Offshore Service, 1st Edition, February 1996(Includes Errata dated December 1996) Establishes testing requirements to verify the design of surface safety valves (SSV) and underwater safety valves (USV), and SSV/USV actuators, manufactured in accordance with API Specification 6A. Includes requirements for verification testing of SSVs and USVs for two performance requirement levels.API-Spec 6D, Pipeline Valves (Gate, Plug, Ball, and Check Valves), 21st Edition, March 1994(Includes Supplement 2 dated December 1997) Covers flanged and butt-welding gate, plug, ball, and check valves. Clarifies the types, categories and bore siz adjusts test and marking requ simplifies the dimensional t adds metric conversions of al and includes other clarifications and updates.API-Spec 6FA, Fire Test for Valves, 2nd Edition, February 1994Covers the requirements for testing and evaluating the performance of API Spec 6A and Spec 6D valves when exposed to specifically defined fire conditions.
API-Spec 6FC, Fire Test for Valve With Automatic Backseats, 2nd Edition, February 1994Covers the requirements for testing and evaluating the performance of API Spec 6A and Spec 6D valves with automatic backseats when exposed to specifically defined fire conditions.API-Spec 6FD, Fire Test for Check Valves, 1st Edition, February 1995Establishes the requirement for testing and evaluating the pressure containing performance of API Spec 6A and 6D check valves when exposed to fire. The performance requirements of this document are intended to establish standard limits of acceptability regardless of size or pressure rating.API-Spec 14A, Subsurface Safety Valve Equipment, 9th Edition, December 1994(Includes Supplement dated December 1997) Covers subsurface safety valves, safety valve locks, and safety valve landing nipples. Includes minimum acceptable standards for materials, manufacturing, and testing of both surface- and subsurface-controlled safety valves for three classes of service.API-Std 553, Refinery Control Valves, 1st Edition, September 1998This document provides recommended criteria for the selection, specification and application of piston and diaphragm actuated control valves. It also outlines control valve design considerations, discusses control valve sizing, noise, fugitive emissions, and defines types of commonly used control valves and their actuators.
API-Std 589, Fire Test for Evaluation of Valve Stem Packing, 2nd Edition, January 1993 (ANSI/API Std 589-1993)Covers the requirements for testing valve stem packing and evaluating its performance when exposed to specifically defined fire conditions. Packing may be acombination or an arrangement of more than one material. The test procedure in this standard simulates circumstances that impose severe demands on valve stem packing. Purchasers may wish to establish more stringent requirements to meet their specific applications.API-Std 590, Steel Line Blanks, 1st Edition, March 1985, Reaffirmed May 1995 (ANSI/API Std 590-1993)Provides dimensions for operating line blanks in sizes NPS 1/2 through NPS 24 for installation between ANSI Bl6.5 flanges in the 150-, 300-, 600-, 900-, 1500-, and 2500-pound pressure classes. The dimensions given are suitable for blanks made of any of 10 different steel plate materials.API-Std 594, Check Valves: Wafer, Wafer-Lug and Double Flanged Type, 5th Edition, November 1997 (ANSI/API Std 594-1993 )This standard covers design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for gray iron, ductile iron, steel, and alloy single and dual plate check valves. Valve configurations include wafer, wafer-lug, and double-flanged type with facings that will permit installation between ASME and MSS flanges that conform to the standards and specifications listed in the Refinery Service Valve Standards.API- Std 599, Metal Plug Valves--Flanged and Welding Ends, 5th Edition, November 1994A purchase specification that covers requirements for metal plug valves with flanged or butt-welding ends, and ductile iron plug valves with flanged ends, in sizes NPS 1 through NPS 24, which correspond to nominal pipe sizes in ASME B36.10M. Valve bodies conforming to ASME B16.34 may have flanged end and one butt-welding end. It also covers both lubricated and non-lubricated valves that have two-way coaxial ports, and includes requirements for valves fitted with internal body, plug, or port linings or applied hard facings on the body, body ports, plug, or plug port.API-Std 600, Steel Gate Valves--Flanged and Butt-Welding Ends Bolted and Pressure Seal Bonnets, 10th Edition, February 1997This standard is for the convenience of purchasers and manufacturers who order, fabricate, or install steel gate valves. Covers steel gate valves with flanged or butt-welding ends in sizes NPS1 through NPS 24.API- Std 602 Compact Steel Gate Valves- Flanged, Threaded, Welding and Extended Body Ends, 6th Edition, June 1993Covers threaded-end, socket-welding-end, butt-welding-end, and flanged-end compact carbon steel gate valves in sizes NPS 4 and smaller.API-Std 603, Class 150, Cast, Corrosion-Resistant, Flanged-End Gate Valves, 5th Edition, July 1991, Reaffirmed November 1996 (ANSI/API Std 603-1993 )
This standard covers Class 150, cast, corrosion resistant, flanged-end gate valves in sizes NPS 1/2 through 12 for use in petroleum refinery piping systems. The valves are outside-screw-and-yoke (OS&Y) valves with rising stem, nonrising handwheel, bolted bonnet, integral seats in the body, raised-face end flanges, and various types of gates.API-Std 608, Metal Ball Valves--Flanged, Threaded and Butt-Welding Ends, 2nd Edition, September 1995 (ANSI/API Std 608-1995 )
Covers Class 150 and Class 300 metal ball valves that have either butt-welding or flanged ends and are for use in on-off service.API-Std 609, Butterfly Valves: Double Flanged, Lug- and Water-Type, 5th Edition, May 1997Covers design, materials, face-to-face dimensions, pressure-temperature ratings, and examination, inspection, and test requirements for gray iron, ductile iron, bronze, steel, nickel-base alloy, or special alloy butterfly valves that provide tight shutoff in the closed position and are suitable for flow regulation.API-RP 591, User Acceptance of Refinery Valves, 2nd Edition, February 1998This recommended practice describes actions a purchaser can take to procure new valves that are required to be in accordance with the Refinery Service Value standards. The purchaser may find that the suggested actions also apply to valves manufactured to other specificationsAPI-RP 6AR, Repair and Remanufacture of Wellhead and Christmas Tree Equipment, 1st Edition, April 1994Provides guidelines for the repair and remanufacture of safe, interchangeable wellhead and Christmas tree equipment. Includes recommendations for performance, design, materials, testing, inspection, welding, marking, handling, storing, and shipping. Contains guidelines for repair and remanufacture of equipment not originally manufactured to, or lacking traceability to verify, API Product Specification Levels specified in the 15th and later editions of API Spec 6A.API-RP 14B, Design, Installation, Repair and Operation of Subsurface Safety Valve Systems, 4th Edition, July 1994(Includes Errata dated June 1996) Covers procedures for design calculations, instructions for safe installation and guidelines for operating and testing to assure safe and efficient performance of subsurface safety valve systems (SSSVS), and covers repair and remanufacture of SSSV equipment.API-RP 14H, Installation, Maintenance and Repair of Surface Safety Valves and Underwater Safety Valves Offshore, 4th Edition, July 1994(Includes Errata dated September 23, 1996) Covers guidelines for inspecting, installing, maintaining, repairing, and operating of SSVs/USVs. Pages: 16.ANSI/API STANDARDSANSI B16.104 SpecificationANSI/API 526-1984 (R1992)Title: Flanged Steel Safety Relief ValvesAbstract: Describes a purchase specification for flanged steel safety-relief valves.ANSI/API 527-1991Title: Seat Tightness of Safety Relief ValvesAbstract: Describes a method for determining seat tightness of safety relief valves as covered in ANSI/API 526-1984, Flanged Steel Safety Relief Valves for Use in Petroleum Refineries. The maximum acceptable leakage rates are defined for commercial safety relief valves with metal-to-metal seats for set pressures up to 6000 pounds per square inch gage (41 megapascals). ASMEASME B16.10-1992Title: Face-to-Face and End-to-End Dimensions of ValvesAbstract: This standard covers face-to-face and end-to-end dimensions of straightway valves, and center-to-face and center-to-end dimensions of angle valves. Its purpose is to assure installation interchangeability for valves of a given material, type, size, rating class, and end connection.
ASME Y32.2.3-1949 (R1994)Title: Graphical Symbols for Pipe Fittings, Valves and Piping Abstract: Covers graphical symbols for use on drawings.ASME/BPE-1997 Bioprocessing EquipmentScope: The standard is intended for design, materials, construction, inspection and testing of vessels, piping and related accessories such as pumps, valves, and fittings for use in the biopharmaceutical industry.ANSI/ISA?ANSI/ISA S75.01-1985 (R1995)Title: Flow Equations for Sizing Control ValvesAbstract: Establishes equations for predicting the flow of compressible or incompressible fluids through control valves. May not be applicable to mixed phase flow, dense slurries, dry solids, or non-Newtonian liquids.ANSI/ISA S75.02-1996Title: Control Valve Capacity Test ProceduresAbstract: Provides a procedure for testing control valve capacity and related flow coefficients for both compressible and incompressible fluids. This standard also provides a procedure to evaluate the major data.ANSI/ISA S75.03-1984Title: Valve Bodies, Face-to-Face Dimensions for Flanged Globe Style ControlAbstract: Applies to flanged control valves sizes 1/2-inch through 16 inches having top, top and bottom, port, or cage guiding. This standard aids users in their piping design by providing ANSI Class 125 flat face and ANSI Classes 150, 250, 300, and 600 raised face flanged control valve dimensions without giving special consideration to the manufacturer or equipment to be used.ANSI/ISA S75.04-1995Title: Face-to-Face Dimensions of Flangeless Control Valves (ANSI Classes 150, 300, and 600)Abstract: Applies to flangeless control valves, sizes 3/4 through 16 inches for ANSI Classes 150 through 600. The purpose of this standard is to aid users in their piping designs for flangeless control valves without giving special consideration to the equipment manufacturer to be used. This standard applies to flangeless ball control valves utilizing a full ball or a segment of a ball and other rotary-stem or sliding-stem flangeless control valves. This standard does not apply to weld-end valves, butterfly valves, or other rotary stem valves that may be covered by other standards.
ANSI/ISA S75.05-1983Title: Control Valve TerminologyANSI/ISA S75.08-1985Title: Installed Face-to-Face Dimensions for Flanged Clamp or Pinch ValvesAbstract: Applies to control valves, sizes 1 through 8 inches, incorporating clamp or pinch elements, and provides installed face-to-face dimensions for control valves which have flanges that mate with the Class 125 (PN20) flanges covered in ANSI B16.1-1975, and/or the Class 150 (PN20) flanges covered in ANSI B16.5-1981.??????ANSI/ISA S75.11-1985 (R1991)Title: Control Valves, Inherent Flow Characteristic and Rangeability ofAbstract: Defines typical control valve inherent flow characteristics and inherent rangeability by manufacturers, and establishes criteria for adherence to manufacturer-specified flow characteristics.ANSI/ISA S75.12-1993Title: Face-to-Face Dimensions for Socket Weld-End and Screwed-End Globe-Style Control Valves (ANSI Classes 150, 300, 600, 900, 1500, and 2500)ANSI/ISA S75.14-1984Title: Face-to-Face Dimensions for Buttweld-End Globe-Style Control ValvesAbstract: Applies to butt-end globe-style control valves, sizes 1/2 inch through 8 inches, having top and cage guiding. The purpose of this standard is to aid users in their piping designs by providing ANSI Class 450 buttweld-end control valve dimensions, without giving special consideration to the equipment manufacturer to be?used. ANSI/ISA S75.15-1993Title: Face-to-Face Dimensions for Buttweld-End Globe-Style Control Valves (ANSI Classes 150, 300, 600, 900, 1500, and 2500)ANSI/ISA S75.16-1993?Title: Face-to-Face Dimensions for Flanged Globe-Style Control Valve Bodies (ANSI Classes 900, 1500, and 2500) ANSI/ISA S75.17-1991 Title: Control Valve Aerodynamic Noise Prediction MethodANSI/ISA S75.19-1995Title: Hydrostatic Testing of Control Valves Abstract: Establishes requirements and definitions for standard hydrostatic shell testing of control valves by valve manufacturers to prove the structure integrity and leak tightness of the pressure-retaining parts.ANSI/ISA S75.07-1987Title: Laboratory Measurement of Aerodynamic Noise Generated by Control Valves Abstract: This standard provides a procedure for testing, measuring, and reporting the aerodynamic noise-generating characteristics of a control valve and its associated piping.??????IECIEC 60534-6 Ed. 1.0 b:1985Title: Industrial-process control valves. Part 6: Mounting details for attachment of positioners to control valve actuatorsAbstract: Permits a variety of positioning devices which respond to a linear motion to be mounted on the actuator of a control valve, either directly or by employing an intermediate mounting bracket. The standardized mounting applies to positioners which are mounted on the side of the actuator, to those actuators which have a travel of 100 mm or less, and is designed to cover three basic types of actuator design: a)those with some form of cast or fabricated yoke to connect the actuator pow b)those which use some form of central tube yoke to connect the actuator pow c)those in which the yoke incorporates two or more columns or pillars to connect the actuator power unit to the valve.IEC
Ed. 1.0 b:1997Title: Industrial-process control valves - Part 6: Mounting details for attachment of positioners to control valves - Section 1: Positioner mounting on linear actuators Abstract: Intended to permit a variety of positioning devices, which respond to a linear motion, to be mounted on the actuator of a control valve, either directly or by employing an intermediate mounting bracket. Applicable where interchangeability between actuators and positioners is desired.LINKS? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? *Excerpt from the soon-to-be-released book Valve and Actuator Technology II by Wayne Ulanski. If you would like to reserve an advance press release upon publication please .?ISA is a registered trademark of the Instrument Society of America 包含各类专业文献、专业论文、高等教育、幼儿教育、小学教育、生活休闲娱乐、应用写作文书、52NEMA Enclosure Classification等内容。
　Table A-1 [From NEMA 250-1997] Conversion of Enclosure Type numbers to IEC Classification Designations Cannot be used to convert IEC Classification ... 　ENCLOSURE CLASSIFICATION DESIGNATIONS (IP) (Cannot be Used to Convert IEC Classification Designations to NEMA Type Ratings) IP First Character 1 IP0_ IP1_... 　ENCLOSURE CLASSIFICATION DESIGNATIONS (IP) (Cannot be Used to Convert IEC Classification Designations to NEMA Type Ratings) IP First Character 1 IP0_ IP1_... 　NEMA Enclosure Types The purpose of this document is to provide general ...Enclosure Classification Designations IEC Publication 60529 Classification of ... 　 NEMA_Enclosure_Types_外... 9页 1下载券喜欢此文档的还喜欢 IP防护等级...NEMA 防护等级(IP 等级)分类 NEMA 是由美国制造商们组织起来的,是制定电气设备... 　 23 九月 2009 by admin 1 COMMENT BOOKMARK NEMA/IP Enclosure Types: The ... Classification of Gases, Vapors and Dusts for Electrical Equipment in ... 　The NEMA 4X rated protective enclosure is equivalent to an IP66 rating, providing complete protection from dust and splashing water. Commtest's vbOnline ... 　 Enclosure Movement_英语学习_外语学习_教育专区。MovementEnclosure Movement ... enclosure movement2 24页 免费 Enclosure Movement-圈地... 4页 免费 NEMA_... 　which relate to the level of protection provided by an enclosure or housing...classification CENELEC (IS) (gas (not Gp I) standard group) * (located ...