PartsTable
Technical Data Sheet
1540-4 ✓ 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

SHIPPING AND STORAGE CONTAINER,E. Key specifications include color: ALUMINUM SINGLE SIDE BORDER, width: 0.500 INCHES NOMINAL IN, length: 1.500 INCHES NOMINAL IN, material: UNABLE TO DECODE, thickness: 0.003 INCHES NOMINAL IN, flow_style: TWO WAY TWO PORT 360 DEGREE PLUG TURN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-270-4679, 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
1540-4
NSN: 4820-00-270-4679
FSC: 4820
CAGE: 35301 — DRESSER INDUSTRIES INC LEROI DIV (USA)
SPECIFICATIONS
colorALUMINUM SINGLE SIDE BORDER
width0.500 INCHES NOMINAL IN
length1.500 INCHES NOMINAL IN
materialUNABLE TO DECODE
thickness0.003 INCHES NOMINAL IN
flow_styleTWO WAY TWO PORT 360 DEGREE PLUG TURN
inscriptionFLIGHT---AXIS SINGLE SIDE
temp_rating-15.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
exterior_colorRED
overall_length0.859 INCHES MAXIMUM IN
vacuum_in_torr50.8
connection_typeTHREADED INTERNAL PIPE ALL ENDS
NSN4820-00-270-4679
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 1540-4 · 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
MATERIAL: COPPER ALLOY BODY
OPERATING PRESSURE: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
FLOW STYLE: TWO WAY TWO PORT 360 DEGREE PLUG TURN
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
VALVE OPERATION METHOD: MANUAL
THREAD QUANTITY PER INCH: 18 FIRST END
CONNECTION STYLE: PLAIN, OPTIONAL END (PIPE) ALL ENDS
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY BODY
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
FLOW STYLETWO WAY TWO PORT 360 DEGREE PLUG TURN
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
VALVE OPERATION METHODMANUAL
THREAD QUANTITY PER INCH18 FIRST END
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) ALL ENDS
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
74414Interchangeable
interchangeable cross-reference
interchangeable
258-4Interchangeable
interchangeable cross-reference
interchangeable
1540-4Interchangeable
interchangeable cross-reference
interchangeable
8691-052PC14Interchangeable
interchangeable cross-reference
interchangeable
K1349020Interchangeable
interchangeable cross-reference
interchangeable
9-726-100067Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1540-4?
1540-4 is a SHIPPING AND STORAGE CONTAINER,E.
What parts can replace 1540-4?
There are 12 known substitutes for 1540-4: 74414, 258-4, 1540-4 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1540-4?
1540-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-270-4679. This indicates validated use in U.S. government and defense supply chains.
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