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Technical Data Sheet
PartsTable / COMPONENT / 57921
57921 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, valve_size: 2.000 INCHES IN, connection_type: FLANGE ALL ENDS, style_designator: STRAIGHT THRU FLANGED ENDS, mounting_position: HORIZONTAL OR VERTICAL, valve_operation_method: AUTOMATIC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-468-6867, 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
57921
NSN: 6685-00-468-6867
FSC: 6685
CAGE: 89305 — SIMMONDS PRECISION PRODUCTS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
valve_size2.000 INCHES IN
connection_typeFLANGE ALL ENDS
style_designatorSTRAIGHT THRU FLANGED ENDS
mounting_positionHORIZONTAL OR VERTICAL
valve_operation_methodAUTOMATIC
NSN6685-00-468-6867
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE,CHECK TITLE COMPONENT PN 57921 MFR VALVE,CHECK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
028-04353Interchangeable
interchangeable cross-reference
interchangeable
1000-011PC21Interchangeable
interchangeable cross-reference
interchangeable
DS947032CPIECE3Interchangeable
interchangeable cross-reference
interchangeable
579-2Interchangeable
interchangeable cross-reference
interchangeable
R579-2Interchangeable
interchangeable cross-reference
interchangeable
RELEASE760Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 57921?
57921 is a VALVE,CHECK.
What parts can replace 57921?
There are 17 known substitutes for 57921: 028-04353, 1000-011PC21, DS947032CPIECE3 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 57921?
57921 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-468-6867. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026