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PartsTable / COMPONENT / 40398-4 FIND NO 31
40398-4 FIND NO 31 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, special_features: USED ON 3/4" TRAC STYLE H SEA WATER PRESSURE REDUCING VALVE, 40398-4, end_item_identification: OVERHAUL/AVAILABILITY DDG56, material_document_and_classification: ASTM-B-150 ALLOY C63200 ASSN STD SINGLE MATERIAL RESPONSE OVERALL, part_name_assigned_by_controlling_agency: SEAT RING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-552-2464, 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
40398-4 FIND NO 31
NSN: 4820-01-552-2464
FSC: 4820
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
special_featuresUSED ON 3/4" TRAC STYLE H SEA WATER PRESSURE REDUCING VALVE, 40398-4
end_item_identificationOVERHAUL/AVAILABILITY DDG56
material_document_and_classificationASTM-B-150 ALLOY C63200 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencySEAT RING
NSN4820-01-552-2464
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40398-4 FIND NO 31 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-B-150 ALLOY C63200 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-B-150 ALLOY C63200 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAT RING
SPECIAL FEATURESUSED ON 3/4" TRAC STYLE H SEA WATER PRESSURE REDUCING VALVE, 40398-4
END ITEM IDENTIFICATIONOVERHAUL/AVAILABILITY DDG56
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
9300-1Interchangeable
interchangeable cross-reference
interchangeable
5315007812026Interchangeable
interchangeable cross-reference
interchangeable
MS20068-271Interchangeable
interchangeable cross-reference
interchangeable
P O 251704-015Interchangeable
interchangeable cross-reference
interchangeable
BX00-251704-015Interchangeable
interchangeable cross-reference
interchangeable
NDC00469-3001-15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40398-4 FIND NO 31?
40398-4 FIND NO 31 is a SEAT,VALVE.
What parts can replace 40398-4 FIND NO 31?
There are 8 known substitutes for 40398-4 FIND NO 31: 9300-1, 5315007812026, MS20068-271 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40398-4 FIND NO 31?
40398-4 FIND NO 31 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-552-2464. 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