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Database: 365,228(8 Aug 2026)

Reflux ratio 1

Reflux ratio 1, Total:158 items.

The international standard classification for "Reflux ratio 1" includes: Check valves , Piping systems , Water supply systems , Electricity. Magnetism. Electrical and magnetic measurements .

The Chinese standard classification for "Reflux ratio 1" includes: Valve , Marine hydraulic/pneumatic elements and accessories , Building water supply and draining engineering , Raw pharmaceutical material processing machinery and equipment , Electromagnetic Measurement .


Group Standards of the People's Republic of China

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

工业和信息化部

Professional Standard-Ships

Military Standard of the People's Republic of China-General Armament Department

  • GJB 6636-2008 Measurement method for underwater echo feature of naval vessel scale models

Professional Standard - Urban Construction

Henan Provincial Standard of the People's Republic of China

Professional Standard - Machinery

National Metrological Verification Regulations of the People's Republic of China

Japanese Industrial Standards Committee (JISC)

Society of Motion Picture and Television Engineers (SMPTE)

American Society for Testing and Materials (ASTM)

  • ASTM D5130-95(1999) Standard Test Method for Open-Channel Flow Measurement of Water Indirectly by Slope-Area Method
  • ASTM D5130-95(2008) Standard Test Method for Open-Channel Flow Measurement of Water Indirectly by Slope-Area Method
  • ASTM D5130-95(2014) Standard Test Method for Open-Channel Flow Measurement of Water Indirectly by Slope-Area Method
  • ASTM E100-10 Standard Specification for ASTM Hydrometers

British Standards Institution (BSI)

  • BS 734-1:1973 Measurement of the density of milk using a hydrometer - Specification for hydrometers for use in milk
  • BS 718:1991 Specification for density hydrometers
  • 17/30363062 DC BS EN 61169-1-4. Radio-frequency connectors. Part 1-4. Electrical test methods. Voltage standing wave ratio, return loss and reflection coefficient. Part 1-4: Electrical test methods- voltage standing wave ratio, return loss and reflection coefficient
  • BS EN 60524:1993 Direct-current resistive volt ratio boxes
  • 2G 114-1953 Specification for direct current ratiometer indicators for aircraft
  • BS 2G 114:1953 Specification for direct current ratiometer indicators for aircraft

International Electrotechnical Commission (IEC)

IN-BIS

  • IS 5312 Pt.1-1984 Specification for swing return (check) valves for water plants - Part 1, single door type

American National Standards Institute (ANSI)

American Water Works Association (AWWA)

SCC

IET - Institution of Engineering and Technology

Institute of Interconnecting and Packaging Electronic Circuits (IPC)

Association Francaise de Normalisation

  • NF EN 14506:2005 Protection devices against pollution of drinking water by return - Automatic return diverter - Family H, type C
  • NF EN 13434:2021 Protection devices against pollution by return of drinking water - Mechanical disconnector activated according to the flow - Family G, type B
  • NF P43-021:2008 Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B.
  • NF C42-161*NF EN 60524:1993 Direct-current resistive volt ratio boxes.
  • NF C18-481/A2:2005 Live working - Portable phase comparators for use on voltages from 1 kV to 36 kV a.c.
  • NF EN 13437:2003 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow diagram

ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc.

  • ASHRAE 3999-1996 Lubricant Return Comparison of Naphthenic and Polyol Ester Oils in R-134a Household Refrigeration Applications

Conference of European Post Telecommunication (CEPT)

Institute of Electrical and Electronics Engineers (IEEE)

  • SMPTE ST 2073-1:2017 ST 2073-1:2017 - SMPTE Standard - VC-5 Video Essence — Part 1: Elementary Bitstream
  • RP 227:2010 RP 227:2010 - SMPTE Recommended Practice - VC-1 Bitstream Transport Encodings
  • SMPTE RP 227:2010 RP 227:2010 - SMPTE Recommended Practice - VC-1 Bitstream Transport Encodings
  • SMPTE ST 2073-1:2014 ST 2073-1:2014 - SMPTE Standard - VC-5 Video Essence - Part 1: Elementary Bitstream
  • ST 2073-1:2017 ST 2073-1:2017 - SMPTE Standard - VC-5 Video Essence — Part 1: Elementary Bitstream
  • ST 2073-1:2014 ST 2073-1:2014 - SMPTE Standard - VC-5 Video Essence - Part 1: Elementary Bitstream
  • RP 228:2008 RP 228:2008 - SMPTE Recommended Practice - VC-1 Decoder and Bitstream Conformance
  • SMPTE RP 228:2008 RP 228:2008 - SMPTE Recommended Practice - VC-1 Decoder and Bitstream Conformance
  • ST 2117-1:2023 ST 2117-1:2023 - SMPTE Standard - VC-6 Multiplanar Picture Format — Part 1: Elementary Bitstream
  • ST 2117-1:2020 ST 2117-1:2020 - SMPTE Standard - VC-6 Multiplanar Picture Format — Part 1. Elementary Bitstream
  • SMPTE ST 2117-1:2020 ST 2117-1:2020 - SMPTE Standard - VC-6 Multiplanar Picture Format — Part 1. Elementary Bitstream

American Industrial Hygiene Association (AIHA)

  • ASSE 1048-2009 Performance Requirements for Double Check Detector Fire Protection Backflow Prevention Assemblies
  • ASSE 1015-2009 Performance Requirements for Double Check Backflow Prevention Assemblies and Double Check Fire Protection Backflow Prevention Assemblies
  • ASSE 5000-5013-1998 ASSE 1013 Reduced Pressure Principle Backflow Preventers (RP) & Reduced Pressure Fire Protection Backflow Preventers (RFP)
  • ASSE 1013-2011 Performance Requirements for Reduced Pressure Principle Backflow Preventers and Reduced Pressure Principle Fire Protection Backflow Preventers
  • ASSE 5000-5015-1998 ASSE 5015 Double Check Backflow Prevention Assemblies (DC) & Double Check Fire Protection Backflow Prevention Assemblies (DCF)
  • ASSE 5000-APPENDIX C-1998 Backflow Test Kit Schematics
  • ASSE 1013-2009 Performance Requirements for Reduced Pressure Principle Backflow Preventers and Reduced Pressure Principle Fire Protection Backflow Preventers
  • ASSE 1015-1999 Performance Requirements for Double Check Backflow Prevention Assemblies and Double Check Fire Protection Backflow Prevention Assemblies

American Welding Society (AWS)

  • WRC 052:1959 Part 1: A Review, Comparison And Modification Of Present Deflection Theory For Flat Perforated Plates

US-FCR

IPC - Association Connecting Electronics Industries

KR-KS

VDI - Verein Deutscher Ingenieure

  • VDI 3617-1981 Non returnable eturnable packing; requirements and decision aids for the comparison of costs
  • VDI 2343 Blatt 2-2008 Recycling of electrical and electronical products - Logistics

AENOR

Danish Standards Foundation

Korean Agency for Technology and Standards (KATS)

GSO

  • GSO ISO 4366:2009 Hydrometry - Echo sounders for water depth measurements
  • OS GSO ISO 16232-1:2008 Road vehicles - Cleanliness of components of fluid circuits - Part 1: Vocabulary
  • OS GSO EN 13437:2009 Packaging and material recycling — Criteria for recycling methods — Description of recycling processes and flow chart

Standard Association of Australia (SAA)

  • AS/NZS 2845.1:2022 Water supply — Backflow prevention devices, Part 1: Materials, design and performance requirements

Association of German Mechanical Engineers

  • DVS 2613-2004 Reflow soldering temperature profile optimization

German Institute for Standardization

  • DIN 58355-1:2011 Membrane filters - Part 1: Testing for specific liquid flow rate for flat filters
  • DIN EN 60524:1994 Direct-current resistive volt ratio boxes (IEC 60524:1975 + A1:1981); German version EN 60524:1993
  • DIN EN 13437:2004-04 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart; German version EN 13437:2003
  • DIN EN 12729:2003 Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B, type A; German version EN 12729:2002
  • DIN EN 13437:2004 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart; German version EN 13437:2003

BE-NBN

(U.S.) Ford Automotive Standards

ESDU - Engineering Sciences Data Unit

CZ-CSN

  • CSN 35 6409-1979 Direct and alternating current thermoeleotrio oomparators and convertors

National Aeronautics and Space Administration (NASA)

  • NASA-TR-R-171-1967 The correlation of oblique shock parameters for ratios of specific heats from 1 to 5/3 with application to real gas flows

Society of Automotive Engineers (SAE)

SAE - SAE International

Canadian Standards Association (CSA)

European Committee for Standardization (CEN)

  • EN 12729:2002 Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B; Type A