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NL99K4A — VALVE,BALL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NL99K4A: VALVE,BALL.

The VALVE,BALL is a the manufacturer industrial component. Key specifications include material: STEEL STAINLESS - USE STB000 BODY, valve_size: 1.000 INCHES IN, valve_operation_method: MANUAL, material_document_and_classification: ASTM 351 ASSN STD SINGLE MATERIAL RESPONSE BODY, part_name_assigned_by_controlling_agency: THREE-PIECE STAINLESS STEEL BALL VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-643-9990, 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
NL99K4A
NSN: 4820-01-643-9990
FSC: 4820 — Valves, Nonpowered
CAGE: 61623 — NIBCO INC CHEMTROL DIV (USA)
SPECIFICATIONS
materialSTEEL STAINLESS - USE STB000 BODY
valve_size1.000 INCHES IN
valve_operation_methodMANUAL
material_document_and_classificationASTM 351 ASSN STD SINGLE MATERIAL RESPONSE BODY
part_name_assigned_by_controlling_agencyTHREE-PIECE STAINLESS STEEL BALL VALVE
NSN4820-01-643-9990
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NL99K4A · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM 351 ASSN STD SINGLE MATERIAL RESPONSE BODY
•
VALVE SIZE: 1.000 INCHES IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE PACKING
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM 351 ASSN STD SINGLE MATERIAL RESPONSE BODY
VALVE SIZE1.000 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYTHREE-PIECE STAINLESS STEEL BALL VALVE
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE PACKING
MATERIALSTEEL COMP 304 FLOW CONTROL DEVICE
MATERIALSTEEL COMP 316 STEM
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE SEAT
MATERIALSTEEL STAINLESS - USE STB000 BODY
VALVE OPERATION METHODMANUAL
SUBSTITUTES & CROSS-REFERENCES 1
T-595-S6-R-66-LLReference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 NL99K4A?
NL99K4A is a VALVE,BALL.
What parts can replace NL99K4A?
There is 1 known substitute for NL99K4A: T-595-S6-R-66-LL. Substitute compatibility should be verified for your specific system.
What is the NSN for NL99K4A?
NL99K4A is cataloged in the U.S. Government catalog under NSN 4820-01-643-9990. 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.