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PartsTable / COMPONENT / HL-18828 PIECE 258
HL-18828 PIECE 258 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, bonnet_type: INSIDE SCREW, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN,OPTIONAL END(PIPE) ALL ENDS, special_features: GRUMMAN,A10 AIRCRAFT;WEAPON SYSTEM ESSENTIAL, style_designator: STRAIGHT THRU. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-196-7443, 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
HL-18828 PIECE 258
NSN: 4820-01-196-7443
FSC: 4820
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
bonnet_typeINSIDE SCREW
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN,OPTIONAL END(PIPE) ALL ENDS
special_featuresGRUMMAN,A10 AIRCRAFT;WEAPON SYSTEM ESSENTIAL
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
features_providedBONNET PACKING
surface_treatmentPASSIVATE
flow_control_deviceNEEDLE
nominal_thread_size0.250 INCHES ALL ENDS IN
valve_operation_methodMANUAL
NSN4820-01-196-7443
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: HL-18828 PIECE 258 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
3R28755Interchangeable
interchangeable cross-reference
interchangeable
KN53-02 PMXInterchangeable
interchangeable cross-reference
interchangeable
MD271-1 AND MPL-892Interchangeable
interchangeable cross-reference
interchangeable
X-HUS-18Interchangeable
interchangeable cross-reference
interchangeable
2209NInterchangeable
interchangeable cross-reference
interchangeable
HUS61Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HL-18828 PIECE 258?
HL-18828 PIECE 258 is a VALVE,CHECK.
What parts can replace HL-18828 PIECE 258?
There are 7 known substitutes for HL-18828 PIECE 258: 3R28755, KN53-02 PMX, MD271-1 AND MPL-892 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HL-18828 PIECE 258?
HL-18828 PIECE 258 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-196-7443. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026