PartsTable
Technical Data Sheet

21W-CB2 2-1/2IN — VALVE,GLOBE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21W-CB2 2-1/2IN: VALVE,GLOBE.

The VALVE,GLOBE is a the manufacturer industrial component. Key specifications include material: STEEL BODY, bonnet_type: INSIDE SCREW, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-435-4571, 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
21W-CB2 2-1/2IN
NSN: 4820-01-435-4571
FSC: 4820 — Valves, Nonpowered
CAGE: 61661 — NEWMANS INC NEW JERSEY DIV (USA)
SPECIFICATIONS
materialSTEEL BODY
bonnet_typeINSIDE SCREW
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
nominal_thread_size2.500 INCHES ALL ENDS IN
valve_operation_methodMANUAL
end_item_identificationUSED ON THE SPRUANCE CLASS DD(963)
bonnet_attachment_methodTHREADED
thread_series_designatorNPSF ALL ENDS
NSN4820-01-435-4571
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21W-CB2 2-1/2IN · 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
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
BONNET TYPE: INSIDE SCREW
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
NOMINAL THREAD SIZE: 2.500 INCHES ALL ENDS IN
•
BONNET ATTACHMENT METHOD: THREADED
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
BONNET TYPEINSIDE SCREW
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE2.500 INCHES ALL ENDS IN
BONNET ATTACHMENT METHODTHREADED
END ITEM IDENTIFICATIONUSED ON THE SPRUANCE CLASS DD(963)
MATERIALSTEEL BODY
THREAD SERIES DESIGNATORNPSF ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 2
A0424-00Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
A0424-00 FIGURE 21W-CB2 2-1/2INSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21W-CB2 2-1/2IN?
21W-CB2 2-1/2IN is a VALVE,GLOBE.
What parts can replace 21W-CB2 2-1/2IN?
There are 2 known substitutes for 21W-CB2 2-1/2IN: A0424-00, A0424-00 FIGURE 21W-CB2 2-1/2IN. Substitute compatibility should be verified for your specific system.
What is the NSN for 21W-CB2 2-1/2IN?
21W-CB2 2-1/2IN is cataloged in the U.S. Government catalog under NSN 4820-01-435-4571. 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.