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803-2177518 — RETAINER,BONNET VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

803-2177518: RETAINER,BONNET VALVE.

The RETAINER,BONNET VALVE is a the manufacturer industrial component. Key specifications include material: STEEL UNS K03504 DISK, stem_type: RISING, valve_size: 5.000 INCHES IN, valve_type: GATE, bonnet_type: INSIDE SCREW, flange_shape: RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-048-3373, 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
803-2177518
NSN: 4820-01-048-3373
NIINs: 010483373, 010961272, 011135326, 011136881, 011185855, 011229855, 011276171, 011381980, 011454838, 011471109, 011472857, 011489416, 011489517, 011503450, 011522688, 011697680, 011697693, 011716730, 011716731, 011912659, 011912660, 011927193, 011944103, 011967814, 012280705, 012280706, 012280751, 012347134, 012366659, 014692153, 014819819, 014819821, 014820109, 014838142, 014838145, 015002717, 016241796
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL UNS K03504 DISK
stem_typeRISING
valve_size5.000 INCHES IN
valve_typeGATE
bonnet_typeINSIDE SCREW
flange_shapeRECTANGULAR
flange_width3.875 INCHES IN
aa_end_radius0.250 INCHES NOMINAL IN
bb_end_radius0.063 INCHES NOMINAL IN
bore_diameter16.6250 INCHES NOMINAL IN
flange_length4.000 INCHES IN
overall_length9.603 INCHES NOMINAL IN
NSN4820-01-048-3373
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-2177518 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CAST MANGANESE BRONZE,ASTM B132,CL A,8-11/32 IN. O/A LG,GEAR MANUALLY OPERATED,FOR 8 IN. GATE VALVE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCAST MANGANESE BRONZE,ASTM B132,CL A,8-11/32 IN. O/A LG,GEAR MANUALLY OPERATED,FOR 8 IN. GATE VALVE IN
SUBSTITUTES & CROSS-REFERENCES 2
810-2177518-081X-14Reference document
Same NSN cross-reference
Reference document — Secondary reference
803-2177518-10XX-14Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 803-2177518?
803-2177518 is a RETAINER,BONNET VALVE.
What parts can replace 803-2177518?
There are 2 known substitutes for 803-2177518: 810-2177518-081X-14, 803-2177518-10XX-14. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-2177518?
803-2177518 is cataloged in the U.S. Government catalog under NSN 4820-01-048-3373. 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.