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MILV81552 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

MILV81552: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: PLASTIC BODY, connection_style: PLAIN (HOSE) FIRST END, style_designator: STRAIGHT THRU, disk_loading_method: SPRING, flow_control_device: DISK, valve_operation_method: AUTOMATIC. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-129-8674, 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
MILV81552
NSN: 4820-00-129-8674
FSC: 4820 — Valves, Nonpowered
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC BODY
connection_stylePLAIN (HOSE) FIRST END
style_designatorSTRAIGHT THRU
disk_loading_methodSPRING
flow_control_deviceDISK
valve_operation_methodAUTOMATIC
nominal_inside_diameter_hose_accommodated0.250 INCHES FIRST END IN
NSN4820-00-129-8674
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MILV81552 · 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
•
FLOW CONTROL DEVICE: DISK
•
CONNECTION STYLE: PLAIN (HOSE) FIRST END
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
STYLE DESIGNATOR: STRAIGHT THRU
•
DISK LOADING METHOD: SPRING
•
MATERIAL: PLASTIC BODY
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
CONNECTION STYLEPLAIN (HOSE) FIRST END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.250 INCHES FIRST END IN
STYLE DESIGNATORSTRAIGHT THRU
DISK LOADING METHODSPRING
MATERIALPLASTIC BODY
MATERIALSTEEL FLOW CONTROL DEVICE
VALVE OPERATION METHODAUTOMATIC
SUBSTITUTES & CROSS-REFERENCES 1
156-165Same 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 MILV81552?
MILV81552 is a VALVE,SAFETY RELIEF.
What parts can replace MILV81552?
There is 1 known substitute for MILV81552: 156-165. Substitute compatibility should be verified for your specific system.
What is the NSN for MILV81552?
MILV81552 is cataloged in the U.S. Government catalog under NSN 4820-00-129-8674. 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.