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PartsTable / COMPONENT / S15F-3 4IN AND 8666
S15F-3 4IN AND 8666 ✓ 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 LINER,FREE FALL CHUTE is a the manufacturer industrial component. Key specifications include material: STEEL STEM, stem_type: RISING, valve_size: 4.000 INCHES IN, bonnet_type: OUTSIDE SCREW-YOKE, connection_type: FLANGE, ROUND W/HOLES, flange_diameter: 9.000 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-270-2445, 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
S15F-3 4IN AND 8666
NSN: 4820-01-270-2445
FSC: 4820
CAGE: 79342 — WILLIAM E WILLIAMS VALVE CORP (USA)
SPECIFICATIONS
materialSTEEL STEM
stem_typeRISING
valve_size4.000 INCHES IN
bonnet_typeOUTSIDE SCREW-YOKE
connection_typeFLANGE, ROUND W/HOLES
flange_diameter9.000 INCHES IN
bolt_hole_quantity8
flange_face_designRAISED
face_to_face_distance9.000 INCHES IN
valve_operation_methodMANUAL
bonnet_attachment_methodBOLTED
nondefinitive_spec/std_data150 RATING
NSN4820-01-270-2445
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: S15F-3 4IN AND 8666 · 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
•
VALVE SIZE: 4.000 INCHES IN
•
FLANGE DIAMETER: 9.000 INCHES IN
•
CONNECTION TYPE: FLANGE, ROUND W/HOLES
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
•
VALVE OPERATION METHOD: MANUAL
•
MATERIAL: STEEL STEM
•
BOLT HOLE QUANTITY: 8
•
BONNET ATTACHMENT METHOD: BOLTED
TECHNICAL CHARACTERISTICS (FLIS)
VALVE SIZE4.000 INCHES IN
FLANGE DIAMETER9.000 INCHES IN
CONNECTION TYPEFLANGE, ROUND W/HOLES
INLET RELATIONSHIP WITH OUTLETIDENTICAL
VALVE OPERATION METHODMANUAL
MATERIALSTEEL STEM
BOLT HOLE QUANTITY8
BONNET ATTACHMENT METHODBOLTED
SPECIFICATION/STANDARD DATA81349-MIL-V-18110 GOVERNMENT SPECIFICATION
MATERIALSTEEL UNS J92600 SEAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
8666Interchangeable
interchangeable cross-reference
interchangeable
963882-841Interchangeable
interchangeable cross-reference
interchangeable
40-802Interchangeable
interchangeable cross-reference
interchangeable
MIL-C-83360Interchangeable
interchangeable cross-reference
interchangeable
34Interchangeable
interchangeable cross-reference
interchangeable
PL8666Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S15F-3 4IN AND 8666?
S15F-3 4IN AND 8666 is a LINER,FREE FALL CHUTE.
What parts can replace S15F-3 4IN AND 8666?
There are 15 known substitutes for S15F-3 4IN AND 8666: 8666, 963882-841, 40-802 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S15F-3 4IN AND 8666?
S15F-3 4IN AND 8666 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-270-2445. 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