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HL4877PC30 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

HL4877PC30: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_radius: 0.300 INCHES NOMINAL IN, flange_diameter: 1.359 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 0.350 INCHES NOMINAL IN, body_outside_diameter: 1.109 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4810-00-146-4573, 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
HL4877PC30
NSN: 4810-00-146-4573
FSC: 4810 — Valves, Powered
CAGE: 93236 — DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN A JOINT VENTURE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_radius0.300 INCHES NOMINAL IN
flange_diameter1.359 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
under_flange_height0.350 INCHES NOMINAL IN
body_outside_diameter1.109 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN
seating_surface_shapeRADIAL
flange_seat_to_disk_end_height0.275 INCHES NOMINAL IN
NSN4810-00-146-4573
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: HL4877PC30 · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.275 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.359 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.109 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
SEAT RADIUS: 0.300 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.350 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
SEATING SURFACE SHAPE: RADIAL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.275 INCHES NOMINAL IN
FLANGE DIAMETER1.359 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.109 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN FLANGED
SEAT RADIUS0.300 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.350 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SEATING SURFACE SHAPERADIAL
SUBSTITUTES & CROSS-REFERENCES 9
HL6066Reference document
Same NSN cross-reference
Reference document — Secondary reference
HL3839PC30Reference document
Same NSN cross-reference
Reference document — Secondary reference
HL3831PC30Reference document
Same NSN cross-reference
Reference document — Secondary reference
HL6074Reference document
Same NSN cross-reference
Reference document — Secondary reference
HL6064PC30Reference document
Same NSN cross-reference
Reference document — Secondary reference
HL4705PC30Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 HL4877PC30?
HL4877PC30 is a SEAT,VALVE.
What parts can replace HL4877PC30?
There are 9 known substitutes for HL4877PC30: HL6066, HL3839PC30, HL3831PC30 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HL4877PC30?
HL4877PC30 is cataloged in the U.S. Government catalog under NSN 4810-00-146-4573. 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.