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PartsTable / COMPONENT / DS-B99977-03-8-09-11-RF-09-FF-F-
DS-B99977-03-8-09-11-RF-09-FF-F- ✓ 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

ROD,PISTON,LINEAR ACTUATING CYLI. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: HEXAGON, screw_material: STEEL COMP 316, stock_diameter: 0.263 INCHES NOMINAL IN, inside_diameter: 0.640 INCHES NOMINAL IN, operation_method: HYDRAULIC CYLINDER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-608-4883, 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
DS-B99977-03-8-09-11-RF-09-FF-F-
NSN: 4820-01-608-4883
FSC: 4820
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleHEXAGON
screw_materialSTEEL COMP 316
stock_diameter0.263 INCHES NOMINAL IN
inside_diameter0.640 INCHES NOMINAL IN
operation_methodHYDRAULIC CYLINDER
special_featuresMATL IS CRES IAW ASTM A479,TY 316 W/0.250-20 2A THREADS A
style_designatorCYLINDRICAL
thread_directionRIGHT-HAND
spring_free_length5.000 INCHES NOMINAL IN
end_connection_typeTHREADED
spring_deflection_rate767.0 POUNDS PER INCH NOMINAL LBS
NSN4820-01-608-4883
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: DS-B99977-03-8-09-11-RF-09-FF-F- · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
EXTRA LONG REFERENCE NUMBER: DS-B99977-03-8-09-11-RF-09-FF-F2-S
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
EXTRA LONG REFERENCE NUMBERDS-B99977-03-8-09-11-RF-09-FF-F2-S
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
S90724Interchangeable
interchangeable cross-reference
interchangeable
DS-B99977-03-8-09-11-RF-09-FF-F-Interchangeable
interchangeable cross-reference
interchangeable
X13735Interchangeable
interchangeable cross-reference
interchangeable
157235Interchangeable
interchangeable cross-reference
interchangeable
157642Interchangeable
interchangeable cross-reference
interchangeable
157643Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DS-B99977-03-8-09-11-RF-09-FF-F-?
DS-B99977-03-8-09-11-RF-09-FF-F- is a ROD,PISTON,LINEAR ACTUATING CYLI.
What parts can replace DS-B99977-03-8-09-11-RF-09-FF-F-?
There are 10 known substitutes for DS-B99977-03-8-09-11-RF-09-FF-F-: S90724, DS-B99977-03-8-09-11-RF-09-FF-F-, X13735 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DS-B99977-03-8-09-11-RF-09-FF-F-?
DS-B99977-03-8-09-11-RF-09-FF-F- is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-608-4883. 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.
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Last verified: July 2026