Internal and external return

Internal and external return, Total:121 items.

The international standard classification for "Internal and external return" includes: Check valves , Water supply systems .

The Chinese standard classification for "Internal and external return" includes: Valve , Building water supply and draining engineering , Raw pharmaceutical material processing machinery and equipment .

Group Standards of the People's Republic of China

T/GDID 1086-2023 Backflow prevention angle valve
T/ZZB 2499-2021 Axial flow check valve
T/QGCML 1555-2023 Mining face installation process
T/BIE 003-2023 Through Hole Reflow Soldering Specifications
T/WZBF 010-2022 Axial flow check valve
T/ZZB 2878-2022 Metal seal non-slam axial flow check valves

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

GB/T 21387-2008 Aaxial flow check valve

工业和信息化部

JB/T 13887-2020 Automatic recirculation valves

Professional Standard - Urban Construction

CJ/T 160-2010 Double check valve backflow prevention assembly
CJ/T 255-2007 Non-slam nozzle check valve

Henan Provincial Standard of the People's Republic of China

DB41/T 2263-2022 Consumer Product Recall Workflow

Professional Standard - Machinery

JB/T 20044-2005 Hot-gas reflux extracting & concentration unit
JB/T 20044-2014 Reflux Extracting Concentrator Unit

VDI - Verein Deutscher Ingenieure

VDI 2343 Blatt 2-2000 Recycling of electrical and electronical products - External and internal logistics
VDI 2343 Blatt 2-1998 Recycling of electrical and electronical products - External and internal logistics
VDI 2343 Blatt 2-2008 Recycling of electrical and electronical products - Logistics

US-FCR

FCR UFGS-33 63 14-2006 EXTERIOR BURIED PUMPED CONDENSATE RETURN
FCR FED H-08-4 VOL 3 SEC II 621.5-1988 EXHAUST AND/OR RETURN BRANCH DUCT
FCR FED H-08-4 VOL 3 SEC II 644.4-1988 CONDENSATE RETURN AROUND OPENINGS

American National Standards Institute （ANSI)

ANSI/AWWA C510-2017 Double Check-Valve Backflow Prevention Assembly
ANSI/AWWA C510-2007 Double Check Valve Backflow-Prevention Assembly
ANSI/ASSE 1024-2004 Dual Check Valve Type Backflow Preventers
ANSI/ASME A112.18.7M-1999 Deck Mounted Bath/Shower Transfer Valves with Internal Backflow Prevention
ANSI/ASSE 1013-2011 Performance Requirements for Reduced Pressure Principle Backflow Preventers and Reduced Pressure Principle Fire Protection Backflow Preventers
ANSI/AWWA C511-2017 Reduced-Pressure Principle Backflow Prevention Assembly
ANSI/ASSE 1035-2002 Laboratory Faucet Backflow Preventer
ANSI/AWWA C511-2007 Reduced Pressure Principle Backflow Prevention Assembly

American Water Works Association (AWWA)

ANSI/AWWA C510-2017(2021) Double Check-Valve Backflow Prevention Assembly
ANSI/AWWA C511-2017(2021) Reduced-Pressure Principle Backflow Prevention Assembly
AWWA C510-2007 Double Check Valve Backflow Prevention Assembly
AWWA C510-1997 Double Check Valve Backflow Prevention Assembly

SCC

AWWA ACE63185 Meters and Backflow Protection
CAN 3-B64.6-M86-1986 Backflow Preventers - Dual Check Valve Type
CAN/CSA-B64.5-1994 Backflow Preventers, Double Check Valve Type (DCVA)
CAN/CSA-B64.6-1994 Backflow Preventers, Dual Check Valve Type (DuC)
IAPMO TS 8-2006 Backflow Preventers and Relief Valves
CSA B64.10-17/B64.10.1-2017 Selection and installation of backflow prevention devices/Maintenance and field testing of backflow prevention devices
AS 2845.2:1994 Water supply - Backflow prevention devices - Air gaps and break tanks
DANSK DS/EN 13437:2003 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart
CAN/CSA-B64.6-M88-1988 Backflow prevention devices with two check valves (DAr2C)
AWWA ACE63015 Jordan River Return Flow Study
NS-EN 13437:2003 Packaging and material recycling — Criteria for recycling methods — Description of recycling processes and flow chart
CAN/CSA-B64.4-M88-1988 Reduced Pressure Backflow Preventers (DArPR)
AWWA ACE65152 Backflow Assembly Design Criteria
AWWA ACE70930 Backflow Assembly Design Criteria
CAN/CSA-B64 Series-M88-1988 Backflow Preventers and Vacuum Breakers
CAN/CSA-B64 Series-2007 Backflow Preventers and Vacuum Breakers
VDI 2343 BLATT 2-2010 Recycling of electrical and electronic equipment — Logistics
CAN/CSA-B64 Series-1994 Backflow Preventers and Vacuum Breakers
CAN/CSA B64 SERIES-2001 Backflow Preventers and Vacuum Breakers
CAN/CSA-B64 Series-2001(R2007) Backflow Preventers and Vacuum Breakers
CSA B64 Series-1994 Backflow Preventers and Vacuum Breakers
AWWA REUSE52088 Watershed Analysis of Water Reuse Systems
AS 2845:1986 Water supply - Mechanical backflow prevention devices
AWWA DSS91015 Training for Personnel in the Backflow Prevention Industry
AWWA ACE70931 Backflow Prevention Assembly Installation Criteria
AWWA ACE65415 The Need for Backflow Prevention Programs
AWWA WQTC50351 Study of Flow Characteristics in a Recirculation Zone Using Light Scattering
CAN/CSA-B64.3-1994 Backflow Preventers, Dual Check Valve Type with Atmospheric Port (DCAP)
AWWA ACE61850 Review of Zero Liquid Options and Issues
VDI 2343 BLATT 2-2010 Recycling of electrical and electronic equipment — Logistics
CAN/CSA-B64.10-01/B64.10.1-2001(R2007) Manual for the Selection and Installation of Backflow Prevention Devices/Manual for the Maintenance and Field Testing of Backflow Prevention Devices
CAN/CSA-B64.8-M88-1988 Intermediate Vent Backflow Preventers (DArVI)
HOLDEN HN 2384-2013 Hose - Power Steering Return - Low Pressure
CSA B64.10-17/B64.10.1-2017(R2021) Selection and Installation of Backflow Preventers/Maintenance and Field Testing of Backflow Preventers, Includes Update No. 1 (2019)
CAN/CSA-B64.3-M88-1988 Discharge Orifice Backflow Preventers (DArOD)
AWWA SOURCES55632 Conservation and Recycling: Inside and Outside the Industrial Fence
HOLDEN HN 2384-2006 Hose - Power Steering Return - Low Pressure

Institute of Interconnecting and Packaging Electronic Circuits (IPC)

IPC TA-722 SECTION 6 Reflow Soldering, General

American Industrial Hygiene Association （AIHA)

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 1048-2009 Performance Requirements for Double Check Detector Fire Protection Backflow Prevention Assemblies
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 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
ASSE 5000-APPENDIX C-1998 Backflow Test Kit Schematics

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 13437:2003 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow diagram
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.

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

ASHRAE 4688-2004 Thermal Mixing of Outdoor and Return Airflows in Typical Air-Handling Units (RP-1045)
ASHRAE OR-10-050-2010 Metastable Flow inside Capillary Tubes: A Critical Review

IPC - Association Connecting Electronics Industries

IPC TM-650 2.6.27-2009 Thermal Stress@ Convection Reflow Assembly Simulation
IPC TM-650 2.6.27A-2017 Thermal Stress@ Convection Reflow Assembly Simulation
IPC 7801-2015 Reflow Oven Process Control Standard
IPC 7801 CHINESE-2015 Reflow Oven Process Control Standard

German Institute for Standardization

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 13437:2004 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart; German version EN 13437:2003
DIN SPEC 1108-3:2016-10 Services for waste and recycling logistics, road cleaning and winter maintenance - Part 3: Waste and recycling logistics
DIN 43137:1978 Electric traction; wires for earthing and return current
DIN 43137:1978-06 Electric traction; wires for earthing and return current
DIN 43138:1980 Flexible cables for overhead equipment and return current
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

AENOR

UNE-EN 13437:2004 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart
UNE 26376:1987 BRAKE FLUIDS. WET REFLUX BOILING POINT.
UNE 26375:1987 BRAKE FLUIDS. EQUILIBRIUM REFLUX BOILING POINT.

British Standards Institution (BSI)

BS EN 13437:2003 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart
BS EN 13437:2004 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart
BS 5154:1991 Specification for copper alloy globe, globe stop and check, check and gate valves

GSO

OS GSO EN 13437:2009 Packaging and material recycling — Criteria for recycling methods — Description of recycling processes and flow chart

Danish Standards Foundation

DS/EN 13437:2003 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart
DS/EN IEC 60974-13:2021 Arc welding equipment – Part 13: Welding current return clamp

Lithuanian Standards Office

LST EN 13437-2004 Packaging and material recycling - Criteria for recycling methods - Description of recycling processes and flow chart

Canadian Standards Association (CSA)

CSA B64 Series-2021 Backflow preventers and vacuum breakers
CSA B64 SERIE-07-2007 Vacuum breakers and backflow prevention devices
CSA B64.10-07/B64.10.1-07-2007 Selection and installation of backflow preventers/Maintenance and field testing of backflow preventers fifth edition
CSA B64.10-07/B64.10.1-07 UPD 1-2008 Selection and installation of backflow preventers/Maintenance and field testing of backflow preventers Fifth Edition

American Welding Society (AWS)

WRC 417:1996 Design Guide to Reduce Potential for Vibration Caused by Fluid Flow Inside Pipes - Review and Survey

Association of German Mechanical Engineers

DVS 2613-2004 Reflow soldering temperature profile optimization

Underwriters Laboratories (UL)

UL 1469-2006 UL Standard for Safety Strength of Body and Hydraulic Pressure Loss Testing of Backflow Special Check Valves Second Edition
UL 1469-2010 UL Standard for Safety Strength of Body and Hydraulic Pressure Loss Testing of Backflow Special Check Valves

ESDU - Engineering Sciences Data Unit

ESDU 89038-1989 Reflux condensation in vertical tubes.

United States Navy

NAVY QPL-24630-2012 VALVES, CHECK, IN-LINE, FOR HYDRAULIC FLUID AND LUBRICATING OIL FLUID

Society of Automotive Engineers (SAE)

SAE J189-2012 Power Steering Return Hose Low Pressure
SAE J189-2003 Power Steering Return Hose - Low Pressure

SAE - SAE International

SAE J189-1989 Power Steering Return Hose - Low Pressure (December 1989)
SAE J189-1998 Power Steering Return Hose - Low Pressure
SAE J189-1970 POWER STEERING RETURN HOSE - LOW PRESSURE

Standard Association of Australia （SAA）

AS 2845.2:1996 Water supply - Backflow prevention devices - Air gaps and break tanks

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

Others: External reflux Internal reflux,Internal reflux ratio and external reflux ratio,Internal and external return,Internal reflux to external reflux ratio