PartsTable
Technical Data Sheet
Download PDF

21607A — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21607A: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, flange_diameter: 0.554 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 0.084 INCHES NOMINAL IN, body_inside_diameter: 0.410 INCHES NOMINAL IN, body_outside_diameter: 0.454 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-216-2712, 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
21607A
NSN: 4820-01-216-2712
FSC: 4820 — Valves, Nonpowered
CAGE: 32869 — O. C. KECKLEY COMPANY (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
flange_diameter0.554 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
under_flange_height0.084 INCHES NOMINAL IN
body_inside_diameter0.410 INCHES NOMINAL IN
body_outside_diameter0.454 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.057 INCHES NOMINAL IN
NSN4820-01-216-2712
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21607A · 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: 0.057 INCHES NOMINAL IN
•
FLANGE DIAMETER: 0.554 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.454 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.410 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.084 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.057 INCHES NOMINAL IN
FLANGE DIAMETER0.554 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.454 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.410 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.084 INCHES NOMINAL IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
SEATING SURFACE SHAPEFLAT
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 21607A?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 21607A?
21607A is a SEAT,VALVE.
What is the NSN for 21607A?
21607A is cataloged in the U.S. Government catalog under NSN 4820-01-216-2712. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 21607A

✓ 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.