PartsTable
Technical Data Sheet
668455-1 ✓ 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

POLARIZING KEY,ELECTRICAL CONNEC. Key specifications include material: ALUMINUM ALLOY 2024 BODY, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: FLARED (TUBE) FIRST END, style_designator: STRAIGHT THRU. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-857-8247, 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
668455-1
NSN: 4820-00-857-8247
FSC: 4820
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 BODY
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARED (TUBE) FIRST END
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND FIRST END
mounting_positionHORIZONTAL
surface_treatmentANODIZE
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePOPPET
NSN4820-00-857-8247
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 668455-1 · 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
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TEST DATA DOCUMENT: 36659-668455 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
STYLE DESIGNATOR: STRAIGHT THRU
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID, PHOSPHATE-ESTER BASE SINGLE RESPONSE
THREAD SERIES DESIGNATOR: UNF FIRST END
THREAD CLASS: 3A FIRST END A
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE
DISK LOADING METHOD: SPRING
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TEST DATA DOCUMENT36659-668455 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
STYLE DESIGNATORSTRAIGHT THRU
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID, PHOSPHATE-ESTER BASE SINGLE RESPONSE
THREAD SERIES DESIGNATORUNF FIRST END
THREAD CLASS3A FIRST END A
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE
DISK LOADING METHODSPRING
SURFACE TREATMENTANODIZE
THREAD DIRECTIONRIGHT-HAND FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
P6-300Interchangeable
interchangeable cross-reference
interchangeable
A335Interchangeable
interchangeable cross-reference
interchangeable
668455Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 668455-1?
668455-1 is a POLARIZING KEY,ELECTRICAL CONNEC.
What parts can replace 668455-1?
There are 3 known substitutes for 668455-1: P6-300, A335, 668455. Substitute compatibility should be verified for your specific system.
What is the NSN for 668455-1?
668455-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-857-8247. This indicates validated use in U.S. government and defense supply chains.
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