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7840-103 — STEM,FLUID VALVE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7840-103: STEM,FLUID VALVE.

The STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410, overall_length: 15.125 INCHES NOMINAL IN, special_features: DISK MATERIAL ST ST TY F316L, STELLITED; USED ON LIQUID SERVICE STOP-CHECK VALVE, stem_actuating_end_type: SOCKET, largest_outside_diameter: 1.312 INCHES NOMINAL IN, furnished_items_and_quantity: 1 DISK. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-546-7454, 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
7840-103
NSN: 5330-01-546-7454
NIINs: 015467454, 015467472, 015467479, 015965225
FSC: 5330 — Packing and Gasket Materials
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL COMP 410
overall_length15.125 INCHES NOMINAL IN
special_featuresDISK MATERIAL ST ST TY F316L, STELLITED; USED ON LIQUID SERVICE STOP-CHECK VALVE
stem_actuating_end_typeSOCKET
largest_outside_diameter1.312 INCHES NOMINAL IN
furnished_items_and_quantity1 DISK
valve_size_for_which_designed2.500 INCHES IN
valve_type_for_which_designedSTOP-CHECK
material_document_and_classificationASTM A479 CL 2 ASSN STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencySTEM-DISC ASSEMBLY
NSN5330-01-546-7454
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7840-103 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 1
7840-103 ITEM NO. 12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7840-103?
7840-103 is a STEM,FLUID VALVE.
What parts can replace 7840-103?
There is 1 known substitute for 7840-103: 7840-103 ITEM NO. 12. Substitute compatibility should be verified for your specific system.
What is the NSN for 7840-103?
7840-103 is cataloged in the U.S. Government catalog under NSN 5330-01-546-7454. This indicates validated use in U.S. government and defense supply chains.
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