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801-6404978-AY98 — VALVE,BALL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

801-6404978-AY98: VALVE,BALL.

The VALVE,BALL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, valve_size: 4.000 INCHES IN, flange_shape: ROUND WITH HOLES SECOND END, connection_type: FLANGE ALL ENDS, style_designator: CROSS FLANGED ENDS, flange_face_design: PLAIN ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-345-5566, 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
801-6404978-AY98
NSN: 4820-01-345-5566
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
valve_size4.000 INCHES IN
flange_shapeROUND WITH HOLES SECOND END
connection_typeFLANGE ALL ENDS
style_designatorCROSS FLANGED ENDS
flange_face_designPLAIN ALL ENDS
face_to_face_distance15.550 INCHES IN
maximum_operating_temp180.0 FAHRENHEIT SINGLE RESPONSE DEGF
media_for_which_designedWATER, SALT SINGLE RESPONSE
first_connection_face_to_centerline_distance8.250 INCHES IN
NSN4820-01-345-5566
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 801-6404978-AY98 · 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
•
FLANGE SHAPE: ROUND FIRST END
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: CROSS FLANGED ENDS
•
VALVE SIZE: 4.000 INCHES IN
•
MAXIMUM OPERATING TEMP: 180.0 FAHRENHEIT SINGLE RESPONSE DEGF
TECHNICAL CHARACTERISTICS
FLANGE SHAPEROUND FIRST END
FLANGE SHAPEROUND WITH HOLES SECOND END
FLANGE SHAPEROUND WITH HOLES THIRD END
FLANGE FACE DESIGNPLAIN ALL ENDS
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORCROSS FLANGED ENDS
VALVE SIZE4.000 INCHES IN
MAXIMUM OPERATING TEMP180.0 FAHRENHEIT SINGLE RESPONSE DEGF
FACE TO FACE DISTANCE15.550 INCHES IN
MEDIA FOR WHICH DESIGNEDWATER, SALT SINGLE RESPONSE
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
211071661Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 801-6404978-AY98?
801-6404978-AY98 is a VALVE,BALL.
What parts can replace 801-6404978-AY98?
There is 1 known substitute for 801-6404978-AY98: 211071661. Substitute compatibility should be verified for your specific system.
What is the NSN for 801-6404978-AY98?
801-6404978-AY98 is cataloged in the U.S. Government catalog under NSN 4820-01-345-5566. This indicates validated use in U.S. government and defense supply chains.
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