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DF330687 FIND 20 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

DF330687 FIND 20: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, seat_radius: 0.438 INCHES NOMINAL IN, overall_height: 0.312 INCHES NOMINAL IN, style_designator: PLAIN, body_inside_diameter: 1.000 INCHES MINIMUM AND 1.520 INCHES MAXIMUM IN, body_outside_diameter: 1.746 INCHES MINIMUM AND 1.748 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-349-7334, 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
DF330687 FIND 20
NSN: 4820-01-349-7334
FSC: 4820 — Valves, Nonpowered
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
seat_radius0.438 INCHES NOMINAL IN
overall_height0.312 INCHES NOMINAL IN
style_designatorPLAIN
body_inside_diameter1.000 INCHES MINIMUM AND 1.520 INCHES MAXIMUM IN
body_outside_diameter1.746 INCHES MINIMUM AND 1.748 INCHES MAXIMUM IN
seating_surface_shapeRADIAL
NSN4820-01-349-7334
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: DF330687 FIND 20 · 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
•
BODY OUTSIDE DIAMETER: 1.746 INCHES MINIMUM AND 1.748 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 1.000 INCHES MINIMUM AND 1.520 INCHES MAXIMUM IN
•
SEAT RADIUS: 0.438 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
SEATING SURFACE SHAPE: RADIAL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.312 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.746 INCHES MINIMUM AND 1.748 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER1.000 INCHES MINIMUM AND 1.520 INCHES MAXIMUM IN
SEAT RADIUS0.438 INCHES NOMINAL IN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
SEATING SURFACE SHAPERADIAL
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
211036226Same 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 DF330687 FIND 20?
DF330687 FIND 20 is a SEAT,VALVE.
What parts can replace DF330687 FIND 20?
There is 1 known substitute for DF330687 FIND 20: 211036226. Substitute compatibility should be verified for your specific system.
What is the NSN for DF330687 FIND 20?
DF330687 FIND 20 is cataloged in the U.S. Government catalog under NSN 4820-01-349-7334. 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.