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Technical Data Sheet
PartsTable / COMPONENT / MS28050-4
MS28050-4 ✓ 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 VALVE,CHECK is a the manufacturer industrial component. Key specifications include thread_class: 3A ALL ENDS A, connection_style: GASKET SEAL (BOSS) ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS, operating_pressure: 50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, disk_loading_method: SPRING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-064-4396, 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
MS28050-4
NSN: 4820-00-064-4396
FSC: 4820
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
thread_class3A ALL ENDS A
connection_styleGASKET SEAL (BOSS) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
operating_pressure50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
nominal_thread_size0.875 INCHES ALL ENDS IN
valve_operation_methodAUTOMATIC
media_for_which_designedREFRIGERANT 12 SECOND RESPONSE
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
nominal_outside_diameter_tube_accommodated0.625 INCHES ALL ENDS IN
NSN4820-00-064-4396
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MS28050-4 · 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 OPERATION METHOD: AUTOMATIC
•
FLOW CONTROL DEVICE: DISK
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
THREAD CLASS: 3A ALL ENDS A
•
MEDIA FOR WHICH DESIGNED: REFRIGERANT 12 SECOND RESPONSE
•
OPERATING PRESSURE: 50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.625 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
FLOW CONTROL DEVICEDISK
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD CLASS3A ALL ENDS A
MEDIA FOR WHICH DESIGNEDREFRIGERANT 12 SECOND RESPONSE
OPERATING PRESSURE50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MEDIA FOR WHICH DESIGNEDWATER, FRESH THIRD RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.625 INCHES ALL ENDS IN
CONNECTION STYLEGASKET SEAL (BOSS) ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
277970Interchangeable
interchangeable cross-reference
interchangeable
2-2844-76Interchangeable
interchangeable cross-reference
interchangeable
MS28050-3Interchangeable
interchangeable cross-reference
interchangeable
MS28050-1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-6129Interchangeable
interchangeable cross-reference
interchangeable
492304Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28050-4?
MS28050-4 is a VALVE,CHECK.
What parts can replace MS28050-4?
There are 6 known substitutes for MS28050-4: 277970, 2-2844-76, MS28050-3 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28050-4?
MS28050-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-064-4396. 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