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SS845-1889538PC2 1IN — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

SS845-1889538PC2 1IN: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, flange_diameter: 1.748 INCHES NOMINAL IN, style_designator: THREADED FLANGED, seating_surface_shape: FLAT, flange_seat_to_disk_end_height: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-089-3227, 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
SS845-1889538PC2 1IN
NSN: 4820-01-089-3227
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
flange_diameter1.748 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.250 INCHES NOMINAL IN
NSN4820-01-089-3227
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: SS845-1889538PC2 1IN · 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: 0.250 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.748 INCHES NOMINAL IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
MATERIAL: STEEL COMP 304 OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.250 INCHES NOMINAL IN
FLANGE DIAMETER1.748 INCHES NOMINAL IN
STYLE DESIGNATORTHREADED FLANGED
MATERIALSTEEL COMP 304 OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 3
2620-911PC2 1INReference document
Same NSN cross-reference
Reference document — Secondary reference
SS845-1889538Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
SS845-1889538PCReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 SS845-1889538PC2 1IN?
SS845-1889538PC2 1IN is a SEAT,VALVE.
What parts can replace SS845-1889538PC2 1IN?
There are 3 known substitutes for SS845-1889538PC2 1IN: 2620-911PC2 1IN, SS845-1889538, SS845-1889538PC. Substitute compatibility should be verified for your specific system.
What is the NSN for SS845-1889538PC2 1IN?
SS845-1889538PC2 1IN is cataloged in the U.S. Government catalog under NSN 4820-01-089-3227. 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.