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Technical Data Sheet
PartsTable / COMPONENT / 3281 145 1/2U PC 3 4.00IN
3281 145 1/2U PC 3 4.00IN ✓ 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 3281 145 1/2U PC 3 4.00IN is a the manufacturer industrial component. Key specifications include Form Factor: 2U Rack. The unit ships in a 2U form factor suitable for standard rack-mount installations.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-323-6190, 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
2U BAY→ 3281 145 1/2U PC 3 4.00IN
NSN: 4820-01-323-6190
FSC: 4820
CAGE: 1FLD9 — CRANE NUCLEAR INC (USA)
SPECIFICATIONS
Form Factor2U Rack
NSN4820-01-323-6190
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3281 145 1/2U PC 3 4.00IN · 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
•
2U Form Factor
•
MATERIAL: STEEL CORROSION RESISTING
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
•
VALVE TYPE FOR WHICH DESIGNED: ANGLE
•
VALVE SIZE FOR WHICH DESIGNED: 4.000 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A351 GR.CF-8M ASSN STD SINGLE MATERIAL RESPONSE
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: NO. 145 1/2U
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING
STEM ACTUATING END TYPETHREADED EXTERNALLY
VALVE TYPE FOR WHICH DESIGNEDANGLE
VALVE SIZE FOR WHICH DESIGNED4.000 INCHES IN
OVERALL LENGTH15.938 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A351 GR.CF-8M ASSN STD SINGLE MATERIAL RESPONSE
VALVE MODEL NUMBER FOR WHICH DESIGNEDNO. 145 1/2U
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
32183Interchangeable
interchangeable cross-reference
interchangeable
0636305-00Interchangeable
interchangeable cross-reference
interchangeable
8081311Interchangeable
interchangeable cross-reference
interchangeable
82302930Interchangeable
interchangeable cross-reference
interchangeable
5242-868Interchangeable
interchangeable cross-reference
interchangeable
32813PC3*040Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3281 145 1/2U PC 3 4.00IN?
3281 145 1/2U PC 3 4.00IN is a 3281 145 1/2U PC 3 4.00IN.
What parts can replace 3281 145 1/2U PC 3 4.00IN?
There are 8 known substitutes for 3281 145 1/2U PC 3 4.00IN: 32183, 0636305-00, 8081311 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3281 145 1/2U PC 3 4.00IN?
3281 145 1/2U PC 3 4.00IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-323-6190. 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