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Technical Data Sheet
PartsTable / COMPONENT / B2258
B2258 ✓ 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 VALVE,GOVERNOR is a the manufacturer industrial component. Key specifications include document_type: MFR DRAWING, document_source: 82328, component_quantity: 25, document_identification: DWG-F-8257, component_document_origin: INDUSTRIAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-202-9245, 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
B2258
NSN: 4820-01-202-9245
FSC: 4820
CAGE: 0B5H6 — NIANTIC TOOL, INC. DBA NIANTIC TOOL CO (USA)
SPECIFICATIONS
document_typeMFR DRAWING
document_source82328
component_quantity25
document_identificationDWG-F-8257
component_document_originINDUSTRIAL
component_document_page_number1
nonsupply_items_and_quantitiesBODY 1;CAP 2;PIN 5;PISTON 1;SLEEVE 2;SPRING 1;SPINDLE ASSY 1;BEARING 5;SPINDLE 3;PLUG 1;WEIGHT 2;ADAPTER 1;TUBE 1;CONNECTOR 3;TEE 1;FLANGE 1;GASKET 1
NSN4820-01-202-9245
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B2258 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
BACN10MK3-65Interchangeable
interchangeable cross-reference
interchangeable
7889-6566Interchangeable
interchangeable cross-reference
interchangeable
VG96912B22DInterchangeable
interchangeable cross-reference
interchangeable
3400-043-0022Interchangeable
interchangeable cross-reference
interchangeable
6525428Interchangeable
interchangeable cross-reference
interchangeable
F7699PC30Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B2258?
B2258 is a VALVE,GOVERNOR.
What parts can replace B2258?
There are 25 known substitutes for B2258: BACN10MK3-65, 7889-6566, VG96912B22D and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B2258?
B2258 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-202-9245. 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