PartsTable
Technical Data Sheet
Download PDF

20321-003 — VALVE ASSEMBLY,CONTROL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

20321-003: VALVE ASSEMBLY,CONTROL.

The VALVE ASSEMBLY,CONTROL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-076-7736, 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
20321-003
NSN: 4820-01-076-7736
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
general_characteristics_item_descriptionBODY MATL ALUMINUM ALLOY 6061-T651,QQ-A-225/8; ANODIZED PER MIL-A-8625,TYPE 1,CLASS 1; FLANGE SQUARE SIZE 2.75 IN.; 3000 PSIG OPERATING PRESSURE; 4500 PSIG PROOF PRESSURE; 7500 PSIG BURST PRESSURE IN
NSN4820-01-076-7736
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20321-003 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: BODY MATL ALUMINUM ALLOY 6061-T651,QQ-A-225/8; ANODIZED PER MIL-A-8625,TYPE 1,CLASS 1; FLANGE SQUARE SIZE 2.75 IN.; 3000 PSIG OPERATING PRESSURE; 4500 PSIG PROOF PRESSURE; 7500 PSIG BURST PRESSURE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONBODY MATL ALUMINUM ALLOY 6061-T651,QQ-A-225/8; ANODIZED PER MIL-A-8625,TYPE 1,CLASS 1; FLANGE SQUARE SIZE 2.75 IN.; 3000 PSIG OPERATING PRESSURE; 4500 PSIG PROOF PRESSURE; 7500 PSIG BURST PRESSURE IN
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
Demilitarization required — critical (Q)
Ready to buy 20321-003?
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 20321-003?
20321-003 is a VALVE ASSEMBLY,CONTROL.
What is the NSN for 20321-003?
20321-003 is cataloged in the U.S. Government catalog under NSN 4820-01-076-7736. 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 — 20321-003

✓ 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.