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18256PIECE3 — 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 ROTOR,ELECTRICAL SWITCH is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, overall_height: 0.300 INCHES NOMINAL IN, style_designator: PLAIN, seat_angle_in_deg: 37.500 NOMINAL, body_inside_diameter: 1.500 INCHES NOMINAL IN, body_outside_diameter: 2.300 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4820-01-011-2807, 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
18256PIECE3
NSN: 4820-01-011-2807
FSC: 4820
CAGE: 91816 — CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
overall_height0.300 INCHES NOMINAL IN
style_designatorPLAIN
seat_angle_in_deg37.500 NOMINAL
body_inside_diameter1.500 INCHES NOMINAL IN
body_outside_diameter2.300 INCHES NOMINAL IN
seating_surface_shapeANGULAR
NSN4820-01-011-2807
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 18256PIECE3 · 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
•
SEAT ANGLE IN DEG: 37.500 NOMINAL
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL: COPPER ALLOY BODY
•
SEATING SURFACE SHAPE: ANGULAR
•
BODY OUTSIDE DIAMETER: 2.300 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 1.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG37.500 NOMINAL
STYLE DESIGNATORPLAIN
MATERIALCOPPER ALLOY BODY
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE SEAT
SEATING SURFACE SHAPEANGULAR
BODY OUTSIDE DIAMETER2.300 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.500 INCHES NOMINAL IN
OVERALL HEIGHT0.300 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
SN4508PCDE50634InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
76216AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3812AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
AN6241-8InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1825-8InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
141-8DInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18256PIECE3?
18256PIECE3 is a ROTOR,ELECTRICAL SWITCH.
What parts can replace 18256PIECE3?
There are 8 known substitutes for 18256PIECE3: SN4508PCDE50634, 76216A, 3812A and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18256PIECE3?
18256PIECE3 is cataloged in the Federal Logistics Information System under NSN 4820-01-011-2807. 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: September 2026