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3HA522 — VALVE,PRESSURE EQUALIZING,GASEOU

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

3HA522: VALVE,PRESSURE EQUALIZING,GASEOU.

VALVE,PRESSURE EQUALIZING,GASEOU. Key specifications include body_style: SINGLE CONNECTION STRAIGHT THRU, end_item_identification: MEDIUM TACTICAL VEHICLE REPLACEMENT (MTVR) 2320-01-465-2174, valve_relief_design_type: PRESSURE AND VACUUM, valve_venting_design_type: ATMOSPHERIC, specification/standard_data: 94231-07641 MANUFACTURERS STANDARD, part_name_assigned_by_controlling_agency: VALVE - BREATHER. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-504-8853, 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
3HA522
NSN: 4820-01-504-8853
FSC: 4820 — Valves, Nonpowered
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
body_styleSINGLE CONNECTION STRAIGHT THRU
supplementary_featuresC2.5 CFM @ PSI 2.5 WITH PRESSURE CLOSED (SEALED) AT OR ABOVE 1.0 PSI; 3.5 CFM @ PSI 2.5 WITH VACUUM CLOSED (SEALED) AT OR ABOVE 1.0 PSI; AGM CARGO TIES PART NUMBER ("10001-2642880D) TA330-26428805
end_connection_quantity1
end_item_identificationMEDIUM TACTICAL VEHICLE REPLACEMENT (MTVR) 2320-01-465-2174
valve_relief_design_typePRESSURE AND VACUUM
valve_venting_design_typeATMOSPHERIC
specification/standard_data94231-07641 MANUFACTURERS STANDARD
part_name_assigned_by_controlling_agencyVALVE - BREATHER
reference_number_differentiating_characteristicsPRESSURE & FLOW RATINGS
NSN4820-01-504-8853
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3HA522 · 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
•
BODY STYLE: SINGLE CONNECTION STRAIGHT THRU
•
SUPPLEMENTARY FEATURES: C2.5 CFM @ PSI 2.5 WITH PRESSURE CLOSED (SEALED) AT OR ABOVE 1.0 PSI; 3.5 CFM @ PSI 2.5 WITH VACUUM CLOSED (SEALED) AT OR ABOVE 1.0 PSI; AGM CARGO TIES PART NUMBER ("10001-2642880D) TA330-26428805
•
END CONNECTION QUANTITY: 1
•
SPECIFICATION/STANDARD DATA: 94231-07641 MANUFACTURERS STANDARD
•
VALVE VENTING DESIGN TYPE: ATMOSPHERIC
•
VALVE RELIEF DESIGN TYPE: PRESSURE AND VACUUM
TECHNICAL CHARACTERISTICS
BODY STYLESINGLE CONNECTION STRAIGHT THRU
SUPPLEMENTARY FEATURESC2.5 CFM @ PSI 2.5 WITH PRESSURE CLOSED (SEALED) AT OR ABOVE 1.0 PSI; 3.5 CFM @ PSI 2.5 WITH VACUUM CLOSED (SEALED) AT OR ABOVE 1.0 PSI; AGM CARGO TIES PART NUMBER ("10001-2642880D) TA330-26428805
END CONNECTION QUANTITY1
SPECIFICATION/STANDARD DATA94231-07641 MANUFACTURERS STANDARD
VALVE VENTING DESIGN TYPEATMOSPHERIC
PART NAME ASSIGNED BY CONTROLLING AGENCYVALVE - BREATHER
END ITEM IDENTIFICATIONMEDIUM TACTICAL VEHICLE REPLACEMENT (MTVR) 2320-01-465-2174
VALVE RELIEF DESIGN TYPEPRESSURE AND VACUUM
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSPRESSURE & FLOW RATINGS
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
07641-75Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 3HA522?
3HA522 is a VALVE,PRESSURE EQUALIZING,GASEOU.
What parts can replace 3HA522?
There is 1 known substitute for 3HA522: 07641-75. Substitute compatibility should be verified for your specific system.
What is the NSN for 3HA522?
3HA522 is cataloged in the U.S. Government catalog under NSN 4820-01-504-8853. 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.