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Technical Data Sheet
PartsTable / COMPONENT / 8979-4-127
8979-4-127 ✓ 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 RING,SEAL,VALVE BODY 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 4820-01-007-5933, 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
8979-4-127
NSN: 4820-01-007-5933
FSC: 4820
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,ASTM A108,GR 1015,14.732 IN.MIN/14.740 IN.MAX OD,13.245 IN.MIN/13.255 IN.MAX ID,1.625 IN.H,32.0 DEG BEVEL INSIDE LOWER CORNER IN
NSN4820-01-007-5933
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8979-4-127 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,ASTM A108,GR 1015,14.732 IN.MIN/14.740 IN.MAX OD,13.245 IN.MIN/13.255 IN.MAX ID,1.625 IN.H,32.0 DEG BEVEL INSIDE LOWER CORNER IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,ASTM A108,GR 1015,14.732 IN.MIN/14.740 IN.MAX OD,13.245 IN.MIN/13.255 IN.MAX ID,1.625 IN.H,32.0 DEG BEVEL INSIDE LOWER CORNER IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
88326Interchangeable
Same NIIN cross-reference
interchangeable
88326PC9PT8979-Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8979-4-127?
8979-4-127 is a RING,SEAL,VALVE BODY.
What parts can replace 8979-4-127?
There are 2 known substitutes for 8979-4-127: 88326, 88326PC9PT8979-. Substitute compatibility should be verified for your specific system.
What is the NSN for 8979-4-127?
8979-4-127 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-007-5933. 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