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1185-003 — Technical Data Sheet

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— · 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 STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_length: 2.750 INCHES NOMINAL IN, stem_actuating_end_type: SLOTTED, largest_outside_diameter: 0.719 INCHES NOMINAL IN, valve_size_for_which_designed: 3.500 INCHES IN, valve_type_for_which_designed: BUTTERFLY. This part is cataloged in the Federal Logistics Information System under NSN 4820-00-872-0866, 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
1185-003
NSN: 4820-00-872-0866
FSC: 4820
CAGE: 15645 — COOPER CAMERON CORP COOPER CAMERON VALVES DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_length2.750 INCHES NOMINAL IN
stem_actuating_end_typeSLOTTED
largest_outside_diameter0.719 INCHES NOMINAL IN
valve_size_for_which_designed3.500 INCHES IN
valve_type_for_which_designedBUTTERFLY
NSN4820-00-872-0866
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1185-003 · 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 FOR WHICH DESIGNED: 3.500 INCHES IN
•
LARGEST OUTSIDE DIAMETER: 0.719 INCHES NOMINAL IN
•
VALVE TYPE FOR WHICH DESIGNED: BUTTERFLY
•
MATERIAL: STEEL CORROSION RESISTING
•
STEM ACTUATING END TYPE: SLOTTED
TECHNICAL CHARACTERISTICS
VALVE SIZE FOR WHICH DESIGNED3.500 INCHES IN
LARGEST OUTSIDE DIAMETER0.719 INCHES NOMINAL IN
VALVE TYPE FOR WHICH DESIGNEDBUTTERFLY
OVERALL LENGTH2.750 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
STEM ACTUATING END TYPESLOTTED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
C-29577InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
W3515-4N5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A-29458InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1680-001InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
W415-6N4InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
A-29457InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1185-003?
1185-003 is a STEM,FLUID VALVE.
What parts can replace 1185-003?
There are 7 known substitutes for 1185-003: C-29577, W3515-4N5, A-29458 and 4 more. Substitute compatibility should be verified for your specific system.
Is 1185-003 still available?
1185-003 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: October 2026