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139-6873 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

139-6873: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include flow_control_device: BALL, valve_operation_method: AUTOMATIC, end_item_identification: HEMP ENDURABLE POWER SYSTEM, media_for_which_designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE, part_name_assigned_by_controlling_agency: FUEL BYPASS VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-537-0187, 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
139-6873
NSN: 4820-01-537-0187
FSC: 4820 — Valves, Nonpowered
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
flow_control_deviceBALL
valve_operation_methodAUTOMATIC
end_item_identificationHEMP ENDURABLE POWER SYSTEM
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
part_name_assigned_by_controlling_agencyFUEL BYPASS VALVE
NSN4820-01-537-0187
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 139-6873 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLOW CONTROL DEVICE: BALL
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEBALL
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
PART NAME ASSIGNED BY CONTROLLING AGENCYFUEL BYPASS VALVE
END ITEM IDENTIFICATIONHEMP ENDURABLE POWER SYSTEM
VALVE OPERATION METHODAUTOMATIC
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 2
10322275Reference document
Same NSN cross-reference
Reference document — Informative reference only
12KP738Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 139-6873?
139-6873 is a VALVE,CHECK.
What parts can replace 139-6873?
There are 2 known substitutes for 139-6873: 10322275, 12KP738. Substitute compatibility should be verified for your specific system.
What is the NSN for 139-6873?
139-6873 is cataloged in the U.S. Government catalog under NSN 4820-01-537-0187. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.