PartsTable
Technical Data Sheet
824A4TT4 ✓ 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 SEMICONDUCTOR DEVICES,UNITIZED is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 BODY, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL BOSS FIRST END, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END, special_features: NON-STANDARD CRACKING PRESSURE 8 IN. H2O IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-618-7821, 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
824A4TT4
NSN: 4820-00-618-7821
FSC: 4820
CAGE: 91816 — CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 BODY
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL BOSS FIRST END
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END
special_featuresNON-STANDARD CRACKING PRESSURE 8 IN. H2O IN
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND FIRST END
mounting_positionHORIZONTAL OR VERTICAL
surface_treatmentANODIZE
operating_pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
NSN4820-00-618-7821
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 824A4TT4 · 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
MOUNTING POSITION: HORIZONTAL OR VERTICAL
THREAD DIRECTION: RIGHT-HAND FIRST END
OPERATING PRESSURE: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SEAT ANGLE: 37.0 DEGREES FIRST END
SURFACE TREATMENT: ANODIZE
MATERIAL: ALUMINUM ALLOY 2024 BODY
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
MOUNTING POSITIONHORIZONTAL OR VERTICAL
THREAD DIRECTIONRIGHT-HAND FIRST END
OPERATING PRESSURE600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SEAT ANGLE37.0 DEGREES FIRST END
SURFACE TREATMENTANODIZE
MATERIALALUMINUM ALLOY 2024 BODY
SPECIAL FEATURESNON-STANDARD CRACKING PRESSURE 8 IN. H2O IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
51847-1Interchangeable
interchangeable cross-reference
interchangeable
1543-15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 824A4TT4?
824A4TT4 is a SEMICONDUCTOR DEVICES,UNITIZED.
What parts can replace 824A4TT4?
There are 2 known substitutes for 824A4TT4: 51847-1, 1543-15. Substitute compatibility should be verified for your specific system.
What is the NSN for 824A4TT4?
824A4TT4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-618-7821. This indicates validated use in U.S. government and defense supply chains.
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