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PartsTable / COMPONENT / 1A34120-1
1A34120-1 ✓ 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

VALVE,REGULATING,FLUID PRESSURE. Key specifications include material: STEEL CORROSION RESISTING SEAT, body_style: STRAIGHT THRU W/OFFSET, temp_rating: -30.0 FAHRENHEIT MINIMUM AND 125.0 FAHRENHEIT MAXIMUM DEGF, furnished_items: INTERNAL PILOT VALVE, regulation_type: MANUAL SINGLE STAGE, valve_stem_design: DOUBLE SEAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-726-7996, 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
1A34120-1
NSN: 4820-00-726-7996
FSC: 4820
CAGE: 18355 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING SEAT
body_styleSTRAIGHT THRU W/OFFSET
temp_rating-30.0 FAHRENHEIT MINIMUM AND 125.0 FAHRENHEIT MAXIMUM DEGF
furnished_itemsINTERNAL PILOT VALVE
regulation_typeMANUAL SINGLE STAGE
valve_stem_designDOUBLE SEAT
valve_loading_methodSPRING
outlet_pressure_range50.0 TO 2000.0 CAMERA MOUNT
first_end_thread_class1B
end_connection_quantity2
media_for_which_designedNITROGEN, GASEOUS
renewable_seat_ring_typeTHREADED
NSN4820-00-726-7996
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1A34120-1 · 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
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
FIRST END STYLE DESIGNATOR: FLARE
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 9/16-18 UNF FIRST END
•
MATERIAL: STEEL CORROSION RESISTING STEM
•
MAXIMUM INLET PRESSURE RATING: ERR-060
•
BODY STYLE: STRAIGHT THRU W/OFFSET
•
END CONNECTION QUANTITY: 2
•
FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
FIRST END STYLE DESIGNATORFLARE
THREAD SIZE AND SERIES/TYPE DESIGNATOR9/16-18 UNF FIRST END
MATERIALSTEEL CORROSION RESISTING STEM
MAXIMUM INLET PRESSURE RATINGERR-060
BODY STYLESTRAIGHT THRU W/OFFSET
END CONNECTION QUANTITY2
FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED0.188 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING SEAT
RENEWABLE SEAT RING TYPETHREADED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
1-0125-1Interchangeable
interchangeable cross-reference
interchangeable
1000-0125-1Interchangeable
interchangeable cross-reference
interchangeable
1-0125Interchangeable
interchangeable cross-reference
interchangeable
516322Interchangeable
interchangeable cross-reference
interchangeable
54154Interchangeable
interchangeable cross-reference
interchangeable
B94.9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1A34120-1?
1A34120-1 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 1A34120-1?
There are 20 known substitutes for 1A34120-1: 1-0125-1, 1000-0125-1, 1-0125 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1A34120-1?
1A34120-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-726-7996. 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