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F7757 PIECE 21 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

F7757 PIECE 21: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, seat_angle: 70.0 DEGREES NOMINAL, tip_diameter: 0.245 INCHES NOMINAL IN, overall_height: 12.000 INCHES NOMINAL IN, shank_diameter: 0.370 INCHES NOMINAL IN, style_designator: POPPET. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-168-7616, 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
F7757 PIECE 21
NSN: 4820-01-168-7616
FSC: 4820 — Valves, Nonpowered
CAGE: 16712 — SIEMENS ENERGY, INC. (USA)
SPECIFICATIONS
materialSTEEL
seat_angle70.0 DEGREES NOMINAL
tip_diameter0.245 INCHES NOMINAL IN
overall_height12.000 INCHES NOMINAL IN
shank_diameter0.370 INCHES NOMINAL IN
style_designatorPOPPET
under_flange_height4.095 INCHES NOMINAL IN
flange_seat_to_disk_end_height8.125 INCHES NOMINAL IN
NSN4820-01-168-7616
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: F7757 PIECE 21 · 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
•
SHANK DIAMETER: 0.370 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 8.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
TIP DIAMETER: 0.245 INCHES NOMINAL IN
•
SEAT ANGLE: 70.0 DEGREES NOMINAL
•
UNDER FLANGE HEIGHT: 4.095 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.370 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT8.125 INCHES NOMINAL IN
OVERALL HEIGHT12.000 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
TIP DIAMETER0.245 INCHES NOMINAL IN
SEAT ANGLE70.0 DEGREES NOMINAL
UNDER FLANGE HEIGHT4.095 INCHES NOMINAL IN
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 4
F7757Reference document
Same NSN cross-reference
Reference document — Secondary reference
M225AFReference document
Same NSN cross-reference
Reference document — Secondary reference
F7757 PIECE 22AReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
F7757 PIECE 22Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 F7757 PIECE 21?
F7757 PIECE 21 is a DISK,VALVE.
What parts can replace F7757 PIECE 21?
There are 4 known substitutes for F7757 PIECE 21: F7757, M225AF, F7757 PIECE 22A and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F7757 PIECE 21?
F7757 PIECE 21 is cataloged in the U.S. Government catalog under NSN 4820-01-168-7616. 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.