PartsTable
Technical Data Sheet

R8641-1/4HD2 — VALVE,BLEEDER,HYD

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

R8641-1/4HD2: VALVE,BLEEDER,HYD.

The VALVE,BLEEDER,HYD is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-581-2692, 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
R8641-1/4HD2
NSN: 4820-01-581-2692
FSC: 4820 — Valves, Nonpowered
CAGE: 0L1E5 — LOCKHEED MARTIN CORPORATION (USA)
SPECIFICATIONS
Part NumberR8641-1/4HD2
NSN4820-01-581-2692
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: R8641-1/4HD2 · 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
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)
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FREQUENTLY ASKED QUESTIONS
What is R8641-1/4HD2?
R8641-1/4HD2 is a VALVE,BLEEDER,HYD.
What is the NSN for R8641-1/4HD2?
R8641-1/4HD2 is cataloged in the U.S. Government catalog under NSN 4820-01-581-2692. This indicates validated use in U.S. government and defense supply chains.
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