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1FC109 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1FC109: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, point_type: CONVENTIONAL, body_length: 0.768 INCHES MAXIMUM IN, point_angle: 118.0 DEGREES NOMINAL, shank_style: STANDARD TAPER W/TANG, flute_length: 10.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-157-0546, 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
1FC109
NSN: 4820-00-157-0546
FSC: 4820 — Valves, Nonpowered
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
point_typeCONVENTIONAL
body_length0.768 INCHES MAXIMUM IN
point_angle118.0 DEGREES NOMINAL
shank_styleSTANDARD TAPER W/TANG
flute_length10.250 INCHES NOMINAL IN
rating_methodWINDING TURNS SINGLE COMPONENT SINGLE SECONDARY
turn_quantity160 SINGLE COMPONENT SINGLE SECONDARY
coil_form_typeSOLID SINGLE COMPONENT
flute_quantity2
inclosure_typeFULLY INCLOSED
overall_length17.375 INCHES NOMINAL IN
NSN4820-00-157-0546
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1FC109 · 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
SUBSTITUTES & CROSS-REFERENCES 6
200218Reference document
Same NSN cross-reference
Reference document — Secondary reference
00354920Reference document
Same NSN cross-reference
Reference document — Secondary reference
300710PC4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
00021820Reference document
Same NSN cross-reference
Reference document — Secondary reference
00546930 ITEM 4Reference document
Same NSN cross-reference
Reference document — Secondary reference
003549-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1FC109?
1FC109 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 1FC109?
There are 6 known substitutes for 1FC109: 200218, 00354920, 300710PC4 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1FC109?
1FC109 is cataloged in the U.S. Government catalog under NSN 4820-00-157-0546. 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.