Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW
HEATING ELEMENT,ELECTRICAL,NONIM. Key specifications include material: RUBBER OVERALL, construction: SOLIDSOLID, aperture_width: 3.000 INCHES NOMINAL3.000 INCHES NOMINAL IN, aperture_length: 14.250 INCHES NOMINAL14.250 INCHES NOMINAL IN, attachment_method: ROUND HOLEROUND HOLE, fabrication_method: SOLIDSOLID. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-540-1979, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
WHERE IT FITS
1540-20
NSN:4720-00-540-1979 FSC:4720 CAGE:01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
material
RUBBER OVERALL
construction
SOLIDSOLID
aperture_width
3.000 INCHES NOMINAL3.000 INCHES NOMINAL IN
aperture_length
14.250 INCHES NOMINAL14.250 INCHES NOMINAL IN
attachment_method
ROUND HOLEROUND HOLE
fabrication_method
SOLIDSOLID
cross-sectional_width
0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
cross-sectional_height
0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN
attachment_hole_diameter
0.343 INCHES NOMINAL0.343 INCHES NOMINAL IN
attachment_feature_quantity
55
NSN
4720-00-540-1979
COMPONENT DIAGRAM
KEY FEATURES
•
LAYER COMPOSITION AND LOCATION: 1ST LAYER BRAIDED STEEL WIRE AND OUTER LAYER RUBBER IMPREGNATED BRAIDED FABRIC
•
EXTERIOR COLOR: RED
•
MATERIAL: RUBBER SYNTHETIC TUBE
•
HYDROSTATIC TEST PRESSURE: 700.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
•
NONDEFINITIVE SPEC/STD DATA: 20 SIZE
•
INSIDE SURFACE CONDITION: SMOOTH
•
SPECIFICATION/STANDARD DATA: 81343-SAE J51,TYPE B PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
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FREQUENTLY ASKED QUESTIONS
What is 1540-20?
1540-20 is a HEATING ELEMENT,ELECTRICAL,NONIM.
What parts can replace 1540-20?
There are 17 known substitutes for 1540-20: 25820, 560954R1, 208 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1540-20?
1540-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-540-1979. This indicates validated use in U.S. government and defense supply chains.
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