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Technical Data Sheet
PartsTable / COMPONENT / 123-1/2
123-1/2 ✓ 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 123-1/2 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-087-9562, 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
123-1/2
NSN: 4820-01-087-9562
FSC: 4820
CAGE: 37239 — LUNKENHEIMER CO (USA)
SPECIFICATIONS
Part Number123-1/2
NSN4820-01-087-9562
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 123-1/2 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390,ALLOY B5 FED SPEC SINGLE MATERIAL RESPONSE STEM
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL: COPPER ALLOY 836 BODY
•
FLOW CONTROL DEVICE: DISK
•
BONNET TYPE: PACKING RETAINING
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SINGLE RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY B5 FED SPEC SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATORSTRAIGHT THRU
MATERIALCOPPER ALLOY 836 BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY B5 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE
FLOW CONTROL DEVICEDISK
BONNET TYPEPACKING RETAINING
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
VALVE OPERATION METHODMANUAL
THREAD DIRECTIONRIGHT-HAND ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
14180Interchangeable
interchangeable cross-reference
interchangeable
08454Interchangeable
interchangeable cross-reference
interchangeable
B94.9 3/8-24 UNF HS G H1Interchangeable
interchangeable cross-reference
interchangeable
434-4297Interchangeable
interchangeable cross-reference
interchangeable
11430Interchangeable
interchangeable cross-reference
interchangeable
150 3/16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 123-1/2?
123-1/2 is a 123-1/2.
What parts can replace 123-1/2?
There are 17 known substitutes for 123-1/2: 14180, 08454, B94.9 3/8-24 UNF HS G H1 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 123-1/2?
123-1/2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-087-9562. 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