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Technical Data Sheet
PartsTable / COMPONENT / 9877-7-Y-6
9877-7-Y-6 ✓ 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 DISK,VALVE is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-586-1381, 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
9877-7-Y-6
NSN: 4820-00-586-1381
FSC: 4820
CAGE: 63686 — THE WALWORTH COMPANY (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
NSN4820-00-586-1381
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 9877-7-Y-6 · 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
•
OUTSIDE DIAMETER: 4.479 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 12
•
MATERIAL: STEEL
•
PRESSURE RATING: 600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
THREAD SERIES DESIGNATOR: UNS
•
NOMINAL THREAD SIZE: 1.562 INCHES IN
•
SEAT ANGLE: 14.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER4.479 INCHES NOMINAL IN
THREAD QUANTITY PER INCH12
MATERIALSTEEL
PRESSURE RATING600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
THREAD SERIES DESIGNATORUNS
NOMINAL THREAD SIZE1.562 INCHES IN
OVERALL HEIGHT3.310 INCHES NOMINAL IN
SEAT ANGLE14.0 DEGREES NOMINAL
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
N-11060 PIECE 5Interchangeable
interchangeable cross-reference
interchangeable
9877-7-Y-6Interchangeable
interchangeable cross-reference
interchangeable
C-9877-7Interchangeable
interchangeable cross-reference
interchangeable
9877-7-Y-6 4INInterchangeable
Same NIIN cross-reference
interchangeable
700736258PInterchangeable
Same NIIN cross-reference
interchangeable
T653428Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9877-7-Y-6?
9877-7-Y-6 is a DISK,VALVE.
What parts can replace 9877-7-Y-6?
There are 8 known substitutes for 9877-7-Y-6: N-11060 PIECE 5, 9877-7-Y-6, C-9877-7 and 5 more. Substitute compatibility should be verified for your specific system.
Is 9877-7-Y-6 still available?
9877-7-Y-6 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026