PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 11AV20178
11AV20178 ✓ 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 VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include connection_style: PLAIN,OPTIONAL END(PIPE) ALL ENDS, special_features: VALVE AND SEAT 44 STAINLESS STEEL; MATERAIL 1304 STAINLESS STEEL; 7.250 IN. L, 2.750 IN.

DIAMETER IN, style_designator: SCREW-IN CARTRIDGE, thread_direction: RIGHT-HAND ALL ENDS, supplementary_features: INLET END FEMALE 3/4 INCH BSPT/NPT, DISCHARGE END 1/2 INCH FEMALE BSPT/NPT; WEIGHT 1.750 LB LBS, valve_operation_method: AIR. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-565-4792, 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
11AV20178
NSN: 4820-01-565-4792
FSC: 4820
CAGE: 03933 — ARMSTRONG INTERNATIONAL INC DBA ARMSTRONG MACHINE WORKS (USA)
SPECIFICATIONS
connection_stylePLAIN,OPTIONAL END(PIPE) ALL ENDS
special_featuresVALVE AND SEAT 44 STAINLESS STEEL; MATERAIL 1304 STAINLESS STEEL; 7.250 IN. L, 2.750 IN. DIAMETER IN
style_designatorSCREW-IN CARTRIDGE
thread_directionRIGHT-HAND ALL ENDS
supplementary_featuresINLET END FEMALE 3/4 INCH BSPT/NPT, DISCHARGE END 1/2 INCH FEMALE BSPT/NPT; WEIGHT 1.750 LB LBS
valve_operation_methodAIR
part_name_assigned_by_controlling_agencyFREE FLOATING LEVER AIR/GAS VENT
NSN4820-01-565-4792
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 11AV20178 · 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
•
SUPPLEMENTARY FEATURES: INLET END FEMALE 3/4 INCH BSPT/NPT, DISCHARGE END 1/2 INCH FEMALE BSPT/NPT; WEIGHT 1.750 LB LBS
•
VALVE OPERATION METHOD: AIR
•
STYLE DESIGNATOR: SCREW-IN CARTRIDGE
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) ALL ENDS
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESVALVE AND SEAT 44 STAINLESS STEEL; MATERAIL 1304 STAINLESS STEEL; 7.250 IN. L, 2.750 IN. DIAMETER IN
SUPPLEMENTARY FEATURESINLET END FEMALE 3/4 INCH BSPT/NPT, DISCHARGE END 1/2 INCH FEMALE BSPT/NPT; WEIGHT 1.750 LB LBS
PART NAME ASSIGNED BY CONTROLLING AGENCYFREE FLOATING LEVER AIR/GAS VENT
VALVE OPERATION METHODAIR
STYLE DESIGNATORSCREW-IN CARTRIDGE
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
K877227-1Interchangeable
interchangeable cross-reference
interchangeable
53-93-1Interchangeable
interchangeable cross-reference
interchangeable
K98982Interchangeable
interchangeable cross-reference
interchangeable
8484Interchangeable
interchangeable cross-reference
interchangeable
9230A115-17Interchangeable
interchangeable cross-reference
interchangeable
UUA78GUICInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 11AV20178?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 11AV20178?
11AV20178 is a VALVE,SAFETY RELIEF.
What parts can replace 11AV20178?
There are 11 known substitutes for 11AV20178: K877227-1, 53-93-1, K98982 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11AV20178?
11AV20178 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-565-4792. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 11AV20178

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026