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571794-1 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

571794-1: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, flange_diameter: 0.798 INCHES MINIMUM AND 0.799 INCHES MAXIMUM IN, style_designator: PLAIN FLANGED, seat_angle_in_deg: 45.000 NOMINAL, under_flange_height: 0.326 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN, body_outside_diameter: 0.686 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-072-7451, 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
571794-1
NSN: 4810-01-072-7451
FSC: 4810 — Valves, Powered
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
flange_diameter0.798 INCHES MINIMUM AND 0.799 INCHES MAXIMUM IN
style_designatorPLAIN FLANGED
seat_angle_in_deg45.000 NOMINAL
under_flange_height0.326 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
body_outside_diameter0.686 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
body_stepped_inside_diameter0.562 INCHES NOMINAL FIRST STEP IN
flange_seat_to_disk_end_height0.216 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-5059,COMP 304 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4810-01-072-7451
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 571794-1 · 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: 0.216 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
•
FLANGE DIAMETER: 0.798 INCHES MINIMUM AND 0.799 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.686 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
•
BODY STEPPED INSIDE DIAMETER: 0.562 INCHES NOMINAL FIRST STEP IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059,COMP 304 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
UNDER FLANGE HEIGHT: 0.326 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.216 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
FLANGE DIAMETER0.798 INCHES MINIMUM AND 0.799 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.686 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
BODY STEPPED INSIDE DIAMETER0.562 INCHES NOMINAL FIRST STEP IN
BODY STEPPED INSIDE DIAMETER0.625 INCHES NOMINAL SECOND STEP IN
STYLE DESIGNATORPLAIN FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059,COMP 304 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
UNDER FLANGE HEIGHT0.326 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
SEAT ANGLE IN DEG45.000 NOMINAL
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 571794-1?
571794-1 is a SEAT,VALVE.
What is the NSN for 571794-1?
571794-1 is cataloged in the U.S. Government catalog under NSN 4810-01-072-7451. 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.