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PartsTable / COMPONENT / MS28771-12AL
MS28771-12AL ✓ 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 material: ALUMINUM ALLOY BODY, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_style: FLARED (TUBE) ALL ENDS, special_features: WEAPON SYSTEM ESSENTIAL, style_designator: STRAIGHT THRU. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-059-4920, 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
MS28771-12AL
NSN: 4820-00-059-4920
FSC: 4820
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY BODY
seat_angle37.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_styleFLARED (TUBE) ALL ENDS
special_featuresWEAPON SYSTEM ESSENTIAL
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_devicePOPPET
nominal_thread_size1.750 INCHES ALL ENDS IN
valve_operation_methodAUTOMATIC
end_item_identificationMISSLE, MXPEACEMAKER
NSN4820-00-059-4920
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MS28771-12AL · 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
•
THREAD SERIES DESIGNATOR: UN ALL ENDS
•
THREAD CLASS: 3A ALL ENDS A
•
CONNECTION STYLE: FLARED (TUBE) ALL ENDS
•
NOMINAL THREAD SIZE: 1.750 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MATERIAL: ALUMINUM ALLOY BODY
•
CRITICALITY CODE JUSTIFICATION: FEAT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUN ALL ENDS
THREAD CLASS3A ALL ENDS A
CONNECTION STYLEFLARED (TUBE) ALL ENDS
NOMINAL THREAD SIZE1.750 INCHES ALL ENDS IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MATERIALALUMINUM ALLOY BODY
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
CRITICALITY CODE JUSTIFICATIONFEAT
STYLE DESIGNATORSTRAIGHT THRU
THREAD QUANTITY PER INCH12 ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
MS28771-12Interchangeable
Same NIIN cross-reference
interchangeable
MIL-V-19069Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28771-12AL?
MS28771-12AL is a VALVE,CHECK.
What parts can replace MS28771-12AL?
There are 2 known substitutes for MS28771-12AL: MS28771-12, MIL-V-19069. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28771-12AL?
MS28771-12AL is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-059-4920. 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