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Technical Data Sheet
PartsTable / COMPONENT / 79-3/4
79-3/4 ✓ 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 79-3/4 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 4820-00-289-0885, 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
79-3/4
NSN: 4820-00-289-0885
FSC: 4820
CAGE: 93641 — AQUATROL INC (USA)
SPECIFICATIONS
Part Number79-3/4
NSN4820-00-289-0885
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 79-3/4 · 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
•
OPERATING PRESSURE: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MAXIMUM OPERATING TEMP: 400.0 FAHRENHEIT SINGLE RESPONSE400.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
FEATURES PROVIDED: PRESSURE TIGHT OUTLET SIDEPRESSURE TIGHT OUTLET SIDE
•
NOMINAL THREAD SIZE: 0.750 INCHES SECOND END0.750 INCHES SECOND END IN
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) FIRST ENDPLAIN,OPTIONAL END(PIPE) FIRST END
•
MATERIAL: STEEL STEMCOPPER ALLOY FLOW CONTROL DEVICE
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE SEAT
•
FLOW CONTROL DEVICE: POPPETPOPPET
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP400.0 FAHRENHEIT SINGLE RESPONSE400.0 FAHRENHEIT SINGLE RESPONSE DEGF
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDEPRESSURE TIGHT OUTLET SIDE
NOMINAL THREAD SIZE0.750 INCHES SECOND END0.750 INCHES SECOND END IN
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) FIRST ENDPLAIN,OPTIONAL END(PIPE) FIRST END
MATERIALSTEEL STEMCOPPER ALLOY FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEQQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE SEAT
FLOW CONTROL DEVICEPOPPETPOPPET
ADJUSTABLE PRESSURE RANGE+61.0 TO 120.0 POUNDS PER SQUARE INCH+61.0 TO 120.0 POUNDS PER SQUARE INCH LBS
NOMINAL THREAD SIZE0.750 INCHES FIRST END0.750 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
A-A-132Interchangeable
interchangeable cross-reference
interchangeable
GG-E-671Interchangeable
interchangeable cross-reference
interchangeable
7934Interchangeable
interchangeable cross-reference
interchangeable
XH-5210Interchangeable
interchangeable cross-reference
interchangeable
79342-1-2Interchangeable
interchangeable cross-reference
interchangeable
97217Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 79-3/4?
79-3/4 is a 79-3/4.
What parts can replace 79-3/4?
There are 14 known substitutes for 79-3/4: A-A-132, GG-E-671, 7934 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 79-3/4?
79-3/4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-289-0885. 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