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2553-69-68 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

2553-69-68: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flange_diameter: 0.719 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, seat_angle_in_deg: 7.000 NOMINAL, under_flange_height: 0.228 INCHES MAXIMUM IN, body_inside_diameter: 0.510 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-308-6671, 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
2553-69-68
NSN: 4820-01-308-6671
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_diameter0.719 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
seat_angle_in_deg7.000 NOMINAL
under_flange_height0.228 INCHES MAXIMUM IN
body_inside_diameter0.510 INCHES MAXIMUM IN
body_outside_diameter0.587 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
flange_seat_to_disk_end_height0.342 INCHES MAXIMUM IN
NSN4820-01-308-6671
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2553-69-68 · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.342 INCHES MAXIMUM IN
•
FLANGE DIAMETER: 0.719 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.587 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.510 INCHES MAXIMUM IN
•
UNDER FLANGE HEIGHT: 0.228 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
SEAT ANGLE IN DEG: 7.000 NOMINAL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.342 INCHES MAXIMUM IN
FLANGE DIAMETER0.719 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.587 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.510 INCHES MAXIMUM IN
UNDER FLANGE HEIGHT0.228 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SEAT ANGLE IN DEG7.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
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 1
23399-5 1/2IN PC 7Same 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 2553-69-68?
2553-69-68 is a SEAT,VALVE.
What parts can replace 2553-69-68?
There is 1 known substitute for 2553-69-68: 23399-5 1/2IN PC 7. Substitute compatibility should be verified for your specific system.
What is the NSN for 2553-69-68?
2553-69-68 is cataloged in the U.S. Government catalog under NSN 4820-01-308-6671. 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.