PartsTable
Technical Data Sheet
1669M ✓ 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

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include 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, special_features: THIRD END 1/4 ANPT, thread_direction: RIGHT-HAND FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-528-2363, 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
1669M
NSN: 4820-00-528-2363
FSC: 4820
CAGE: 53477 — SCOVILL INC SCHRADER BELLOWS DIV (USA)
SPECIFICATIONS
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARED (TUBE) FIRST END
special_featuresTHIRD END 1/4 ANPT
thread_directionRIGHT-HAND FIRST END
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceCONE
nominal_thread_size0.500 INCHES FIRST END IN
media_for_which_designedOXYGEN, GASEOUS SINGLE RESPONSE
thread_quantity_per_inch20 FIRST END
NSN4820-00-528-2363
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 1669M · 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: 450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
THREAD QUANTITY PER INCH: 20 FIRST END
THREAD DIRECTION: RIGHT-HAND FIRST END
MOUNTING POSITION: HORIZONTAL OR VERTICAL
SEAT ANGLE: 37.0 DEGREES FIRST END
NOMINAL THREAD SIZE: 0.500 INCHES FIRST END IN
TEST DATA DOCUMENT: 81349-MIL-V-7908 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
THREAD SERIES DESIGNATOR: UNF FIRST END
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
THREAD QUANTITY PER INCH20 FIRST END
THREAD DIRECTIONRIGHT-HAND FIRST END
MOUNTING POSITIONHORIZONTAL OR VERTICAL
SEAT ANGLE37.0 DEGREES FIRST END
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
TEST DATA DOCUMENT81349-MIL-V-7908 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
THREAD SERIES DESIGNATORUNF FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.312 INCHES FIRST END IN
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SINGLE RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
G3102-3Interchangeable
interchangeable cross-reference
interchangeable
3083-4Interchangeable
interchangeable cross-reference
interchangeable
165Interchangeable
interchangeable cross-reference
interchangeable
36501Interchangeable
interchangeable cross-reference
interchangeable
098095Interchangeable
interchangeable cross-reference
interchangeable
M1318Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1669M?
1669M is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace 1669M?
There are 26 known substitutes for 1669M: G3102-3, 3083-4, 165 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1669M?
1669M is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-528-2363. This indicates validated use in U.S. government and defense supply chains.
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