ASTM F1794-1997(2010) Standard Specification for Hand-Operated Globe-Style Valves for Gas (Except Oxygen Gas) and Hydraulic Systems《气体(除氧气)和液压系统手动球形阀门的标准规范》.pdf
《ASTM F1794-1997(2010) Standard Specification for Hand-Operated Globe-Style Valves for Gas (Except Oxygen Gas) and Hydraulic Systems《气体(除氧气)和液压系统手动球形阀门的标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM F1794-1997(2010) Standard Specification for Hand-Operated Globe-Style Valves for Gas (Except Oxygen Gas) and Hydraulic Systems《气体(除氧气)和液压系统手动球形阀门的标准规范》.pdf(7页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: F1794 97 (Reapproved 2010)An American National StandardStandard Specification forHand-Operated, Globe-Style Valves for Gas (Except OxygenGas) and Hydraulic Systems1This standard is issued under the fixed designation F1794; the number immediately following the designation indicates the y
2、ear oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the design, construction, t
3、est-ing, and operating requirements for hand-operated, quick-change cartridge trim, in-line body and angle-body, globe-stylevalves for use in gas (except oxygen gas) and hydraulicsystems. These valves may be used for on-off, and/or throttlingapplications.1.2 The values stated in this specification i
4、n inch-poundunits are to be regarded as the standard. The SI equivalentsshown in parenthesis are provided for information only.2. Referenced Documents2.1 ASTM Standards:2F992 Specification for Valve Label Plates2.2 American National Standards Institute (ANSI):3ANSI B1.1 Unified Screw Threads (UN and
5、 UNR ThreadForm)ANSI B1.20.1 Pipe Threads, General Purpose (Inch)ANSI B16.11 Forged Steel Fittings, Socket-Welding andThreadedANSI B16.25 Buttwelding EndsANSI B16.34 ValvesFlanged, Threaded, and Welded End2.3 Military Standards and Specifications:4MIL-STD-167-1 Mechanical Vibrations of ShipboardEqui
6、pment (Type IEnvironmental and Type IIInternally Excited)MIL-STD-740-1 Airborne Noise Measurements and Accep-tance Criteria of Shipboard EquipmentMIL-S-901 Shock Tests, H.I. (High-Impact); ShipboardMachinery, Equipment and Systems, Requirements forMIL-F-1183 Fittings, Pipe, Cast Bronze, Silver-Brazi
7、ng,General Specification for2.4 Government Drawings:Naval Sea Systems Command (NAVSEA):NAVSEA 803-1385884 Unions, Fittings and Adapters Buttand Socket Welding 6000 PSI, WOG, NPSNAVSEA 803-1385943 Unions, Silver Brazing 3000 PSI,WOG, NPS, for UT InspectionNAVSEA 803-1385946 Unions, Bronze Silver Braz
8、ing,WOG for UT Inspection3. Terminology3.1 Definitions:3.1.1 bubble-tightno visible leakage over a 3-min periodusing either water submersion or the application of bubble fluidfor detection.3.1.2 external leakageleakage from the valve that escapesto atmosphere.3.1.3 flow capacitythe ability of a valv
9、e to pass flowunder any given set of pressure conditions. The flow capacityof a valve is directly related to its Flow Coefficient (Cv). TheFlow coefficient is the quantity of water passing through avalve, expressed in gallons/minute (litres/minute), when 1 psi(6.895 kPa) pressure drop at 60F (16C) i
10、s applied across thevalve.3.1.4 globe-style valvesa basic control valve type thatgets its name from the globular shape of its body with aninternal bridgewall construction. It normally uses a basic risingstem/plug for the closure member.1This specification is under the jurisdiction of ASTM Committee
11、F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved May 1, 2010. Published June 2010. Originallyapproved in 1997. Last previous edition approved in 2004 as F1794 - 97 (2004).DOI: 10.1520/F1794-97R10.2For re
12、ferenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W.
13、43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United St
14、ates.3.1.5 hydrostatic shell test pressuresthe hydrostatic testpressures that the valve is required to withstand withoutdamage. Valve operation is not required during application ofshell test pressure, but the valve must meet all performancerequirements after the shell test pressure has been removed
15、.3.1.6 internal leakageleakage from higher pressure tolower pressure portions of the valve.3.1.7 operating pressuresthe pressures within the valveduring service.3.1.8 pressure ratingsthe pressure ratings of the valveshall be as defined in the documents listed in Table 1. Thepressure ratings (also ca
16、lled pressure-temperature ratings)establish the maximum allowable working (service) pressuresof a component (valve, end connections, and so forth) atvarious temperatures.3.1.9 quick-change cartridge trima construction that fa-cilitates rapid and reliable seat-ring/seat removal and replace-ment by re
17、taining the seat-ring/seat in the valve cartridge, asopposed to a seat-ring which is threaded, welded, brazed, ormade integral with the valve body.3.1.10 seat tightnessthe ability of a valve to preventinternal leakage from the valve-inlet to the valve-outlet.4. Classification4.1 Valves shall be of t
18、he following types, styles, sizes,pressure ratings, and end connections, as specified in Section 5.4.1.1 TypesValves shall have either Type I (angle bodyconstruction) or Type II (inline body construction).4.1.2 StylesValves shall be either Style I (shut-off valves)or Style 2 (throttling valves).4.1.
19、3 SizesValve sizes shall be18 NPS (10.2 mm),14 NPS(13.5 mm),38 NPS (17.2 mm),12 NPS (21.3 mm),34 NPS(26.9 mm), 1 NPS (33.7 mm), 114 NPS (42.4 mm), 112 NPS(48.3 mm), and 2 NPS (60.3 mm).4.1.4 Pressure RatingsValves shall have a pressure ratingselected from those listed in Table 1 and specified in Sec
20、tion 5.The inlet and outlet pressure ratings of the valve shall beidentical for any given valve.4.1.5 End ConnectionsValves shall have end connectionsselected from those listed in Table 1 and specified in Section 5.The inlet and outlet end connections of the valve shall beidentical for any given val
21、ve.5. Ordering Information5.1 Ordering documentation for valves under this specifica-tion shall include the following information, as required todescribe the equipment adequately.5.1.1 ASTM designation and year of issue,5.1.2 Valve type (see 4.1.1),5.1.3 Valve style (see 4.1.2),5.1.4 Valve size (see
22、 4.1.3),5.1.5 Valve pressure rating (see 4.1.4),5.1.6 Valve end connections (see 4.1.5),5.1.7 Line medium,5.1.8 Temperature of line medium,5.1.9 Supplementary requirements, if any (see S1 throughS4),5.1.10 Maximum vibration frequency and displacement am-plitude, if other than specified (see S1.4), a
23、nd5.1.11 Maximum permissible noise level, if other thanspecified (see S1.5).6. Valve Construction6.1 Valves shall incorporate the design features specified in6.1.1-6.1.17.6.1.1 General Requirements:6.1.1.1 Valves furnished under this specification shall besoft-seated, globe-style valves using a cart
24、ridge in which allworking parts including the seat are removable as an assembly.6.1.2 Materials of ConstructionMaterial requirements forthese valves shall be as follows: The pressure containingenvelope shall be 300 series corrosion-resistant steel, nickel-copper (70-30), nickel-aluminum-bronze, or b
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