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D20305S1 — VALVE,GATE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

D20305S1: VALVE,GATE.

The VALVE,GATE is a the manufacturer industrial component. Key specifications include material: STEEL SEAT, valve_size: 12.000 INCHES IN, connection_type: BUTT WELD PIPE, furnished_items_and_quantity: 1 BY-PASS, criticality_code_justification: ZZZY, material_document_and_classification: ASTM A1823 ASSN STD SINGLE MATERIAL RESPONSE SEAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-425-4242, 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
D20305S1
NSN: 4820-01-425-4242
FSC: 4820 — Valves, Nonpowered
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL SEAT
valve_size12.000 INCHES IN
connection_typeBUTT WELD PIPE
furnished_items_and_quantity1 BY-PASS
criticality_code_justificationZZZY
material_document_and_classificationASTM A1823 ASSN STD SINGLE MATERIAL RESPONSE SEAT
reference_number_differentiating_characteristicsQUALITY CONTROLLED IN ACCORDANCE WITH NAVSUP CONTROL INSTRUCTIONS FOR SURF LEVEL 1 ITEMS
NSN4820-01-425-4242
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D20305S1 · 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
•
FURNISHED ITEMS AND QUANTITY: 1 BY-PASS
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
CONNECTION TYPE: BUTT WELD PIPE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A276 ASSN STD SINGLE MATERIAL RESPONSE STEM
•
VALVE SIZE: 12.000 INCHES IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 BY-PASS
CRITICALITY CODE JUSTIFICATIONZZZY
CONNECTION TYPEBUTT WELD PIPE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A276 ASSN STD SINGLE MATERIAL RESPONSE STEM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A1823 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A217 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A217 ASSN STD SINGLE MATERIAL RESPONSE DISK
VALVE SIZE12.000 INCHES IN
MATERIALSTEEL BODY
MATERIALSTEEL DISK
SUBSTITUTES & CROSS-REFERENCES 1
D20305Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is D20305S1?
D20305S1 is a VALVE,GATE.
What parts can replace D20305S1?
There is 1 known substitute for D20305S1: D20305. Substitute compatibility should be verified for your specific system.
What is the NSN for D20305S1?
D20305S1 is cataloged in the U.S. Government catalog under NSN 4820-01-425-4242. 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.