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PartsTable / COMPONENT / MV-21W5 ITEM 4
MV-21W5 ITEM 4 ✓ 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 STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410, special_features: ACME THREADS 4/1 LEFT,CLOCKWISE TO CLOSE,9 1/2 TURNS, stem_actuating_end_type: THREADED EXTERNALLY, largest_outside_diameter: 1.250 INCHES NOMINAL IN, valve_size_for_which_designed: 5.000 INCHES IN, valve_type_for_which_designed: GLOBE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-274-0552, 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
MV-21W5 ITEM 4
NSN: 4820-01-274-0552
FSC: 4820
CAGE: 61661 — NEWMANS INC NEW JERSEY DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 410
special_featuresACME THREADS 4/1 LEFT,CLOCKWISE TO CLOSE,9 1/2 TURNS
stem_actuating_end_typeTHREADED EXTERNALLY
largest_outside_diameter1.250 INCHES NOMINAL IN
valve_size_for_which_designed5.000 INCHES IN
valve_type_for_which_designedGLOBE
material_document_and_classificationASTM A276 GRADE 410 ASSN STD SINGLE MATERIAL RESPONSE
valve_model_number_for_which_designed21W-CB-3 W
NSN4820-01-274-0552
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MV-21W5 ITEM 4 · 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
•
VALVE SIZE FOR WHICH DESIGNED: 5.000 INCHES IN
•
MATERIAL: STEEL COMP 410
•
VALVE TYPE FOR WHICH DESIGNED: GLOBE
•
LARGEST OUTSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A276 GRADE 410 ASSN STD SINGLE MATERIAL RESPONSE
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 21W-CB-3 W
TECHNICAL CHARACTERISTICS (FLIS)
VALVE SIZE FOR WHICH DESIGNED5.000 INCHES IN
MATERIALSTEEL COMP 410
VALVE TYPE FOR WHICH DESIGNEDGLOBE
LARGEST OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
STEM ACTUATING END TYPETHREADED EXTERNALLY
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A276 GRADE 410 ASSN STD SINGLE MATERIAL RESPONSE
VALVE MODEL NUMBER FOR WHICH DESIGNED21W-CB-3 W
SPECIAL FEATURESACME THREADS 4/1 LEFT,CLOCKWISE TO CLOSE,9 1/2 TURNS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
MIL-DTL-22052Interchangeable
interchangeable cross-reference
interchangeable
MIL-V-22052DInterchangeable
interchangeable cross-reference
interchangeable
8347-2 1/2 IN.Interchangeable
interchangeable cross-reference
interchangeable
MILV22052Interchangeable
interchangeable cross-reference
interchangeable
C9877-7Interchangeable
interchangeable cross-reference
interchangeable
78306-B12-27PS2TS-SC40-882056343Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MV-21W5 ITEM 4?
MV-21W5 ITEM 4 is a STEM,FLUID VALVE.
What parts can replace MV-21W5 ITEM 4?
There are 14 known substitutes for MV-21W5 ITEM 4: MIL-DTL-22052, MIL-V-22052D, 8347-2 1/2 IN. and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MV-21W5 ITEM 4?
MV-21W5 ITEM 4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-274-0552. 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