Norgren Featured Datasheets
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01/22 Factory Automation Technical features Miniature Check Valves *Pressure required to produce .001 scfm (28.3 cc/m) forward air flow. Our policy is one of continued research and development. We therefore reserve the right to amend, without notice, the specifications given in this document. © 2022 Norgren Ltd > Non-venting > Duckbill type check > Extremely low crack pressures > Barbed tube connection > Direct in-line mounting > Control flow direction in medical equipment, in rumentation sy ems, and in miniature pneumatic control sy ems Medium: Compressed air, inert gases, nonflammable and nontoxic chemical solutions (must be compatible with materials of construction—consult technical support if in doubt). Maximum Pressure: 30 psig (2.1 bar) Temperature Range: 35° to 150°F (2° to 66°C) Maximum reverse air flow at indicated pressure differential: 4LD-052 & 4LD-063: 0.05 scim @ 2" H2O (@ 1 bubble every 2 seconds) All other listed models: 6 scim @ 8.3" H2O Materials of Construction: Body: Polypropylene Duckbill: Epichlorohydrin or ethylene propylene Warning: These check valves must not be used where pressure or temperature may exceed rated operating conditions. See Specifications Fluids used in these check valves must be compatible with materials of construction. Consult factory if in doubt. These check valves are not intended for use in life support systems. Pneumatic symbol A dia. C dia. C dia. A dia. B C HEX B 4LD-050/-064-D00 Part Number Connection A Inch (mm) B Inch (mm) C Inch (mm) Duckbill Body Crack pressure* 4LD-050-D00 1/16" ID Flexible Tube .11 (2.8) 1.14 (29.0) .34 (8.6) Epichlorohydrin Polypropylene 8" H2O 4LD-051-D00 1/16" ID Flexible Tube .11 (2.8) 1.14 (29.0) .34 (8.6) Ethylene Propylene Polypropylene 8" H2O 4LD-052-D00 1/16" ID Flexible Tube .11 (2.8) .99 (25.1) .34 (8.6) Ethylene Propylene Polypropylene 3" H2O 4LD-063-D00 1/8" ID Flexible Tube .15 (3.8) 1.58 (40.1) .64 (16.3) Ethylene Propylene Polypropylene 3" H2O 4LD-064-D00 5/32" ID Flexible Tube .18 (4.6) 1.70 (43.2) .64 (16.3) Ethylene Propylene Polypropylene 3" H2O D I M E N S I O N S M AT E R I A L S O F C O N S T R U C T I O N