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PL-1990 ITEM 4 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

PL-1990 ITEM 4: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON, overall_height: 0.310 INCHES NOMINAL IN, outside_diameter: 1.255 INCHES NOMINAL IN, special_features: ITEM HAS A PROTRUSION 0.438 IN. DIA 0.308 IN.

LG LOCATED IN CENTER IN, style_designator: SOLID. This part is cataloged in the U.S. Government catalog under NSN 4820-01-219-2293, 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
PL-1990 ITEM 4
NSN: 4820-01-219-2293
FSC: 4820 — Valves, Nonpowered
CAGE: 32142 — HYDRASEARCH COMPANY, LLC (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
overall_height0.310 INCHES NOMINAL IN
outside_diameter1.255 INCHES NOMINAL IN
special_featuresITEM HAS A PROTRUSION 0.438 IN. DIA 0.308 IN. LG LOCATED IN CENTER IN
style_designatorSOLID
NSN4820-01-219-2293
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: PL-1990 ITEM 4 · 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
•
OUTSIDE DIAMETER: 1.255 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SOLID
•
MATERIAL: PLASTIC POLYAMIDE NYLON
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.310 INCHES NOMINAL IN
OUTSIDE DIAMETER1.255 INCHES NOMINAL IN
STYLE DESIGNATORSOLID
SPECIAL FEATURESITEM HAS A PROTRUSION 0.438 IN. DIA 0.308 IN. LG LOCATED IN CENTER IN
MATERIALPLASTIC POLYAMIDE NYLON
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
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FREQUENTLY ASKED QUESTIONS
What is PL-1990 ITEM 4?
PL-1990 ITEM 4 is a DISK,VALVE.
What is the NSN for PL-1990 ITEM 4?
PL-1990 ITEM 4 is cataloged in the U.S. Government catalog under NSN 4820-01-219-2293. 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.