PartsTable
Technical Data Sheet
40490-902 ✓ 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

VALVE,REGULATING,FLUID PRESSURE. Key specifications include filter: NOT INCLUDED, material: NICKEL ALLOY STEM, body_style: STRAIGHT THRU, furnished_items: BRAZING RING AND TAILPIECE AND UNION NUT, regulation_type: AUTOMATIC SINGLE STAGE, valve_stem_design: DOUBLE SEAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-482-3586, 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
40490-902
NSN: 4820-01-482-3586
FSC: 4820
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialNICKEL ALLOY STEM
body_styleSTRAIGHT THRU
furnished_itemsBRAZING RING AND TAILPIECE AND UNION NUT
regulation_typeAUTOMATIC SINGLE STAGE
valve_stem_designDOUBLE SEAT
flow_control_deviceDIAPHRAGM
valve_loading_methodSPRING
outlet_pressure_range25.0 TO 60.0 CAMERA MOUNT
end_connection_quantity2
end_item_identificationW/S DESIGNATOR TAWARA CLASS LHA
media_for_which_designedAIR OR NITROGEN, GASEOUS
NSN4820-01-482-3586
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 40490-902 · 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: NICKEL ALLOY STEM
FIRST END STYLE DESIGNATOR: SOCKET W/BRAZING RING
OUTLET PRESSURE RANGE: 25.0 TO 60.0 CAMERA MOUNT
FILTER: NOT INCLUDED
FURNISHED ITEMS: BRAZING RING AND TAILPIECE AND UNION NUT
MAXIMUM INLET PRESSURE RATING: ERR-060
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL ALLOY STEM
FIRST END STYLE DESIGNATORSOCKET W/BRAZING RING
OUTLET PRESSURE RANGE25.0 TO 60.0 CAMERA MOUNT
SPECIAL FEATURESMEETS HIGH SHOCK REQUIREMENTS OF MIL-S-9010 FOR LIGH WEIGHT, GRADE A EQUIPMENT: CLASS I MOUNTING FIXTURE 4A, AERO-NAV LABORATORIES REPORT 3-6344 DATED J25 JULY 1983, POST SHOCK TEST DATED 1 AUGUST 1983. APPROVED BY SUPSHIPS NEWPORT NEW, VA LETTER CVN 58 COH/CVN 71/9505 (9480-0) SER 263B-2911 DATED 25 OCTOBER 198X, EXTENSION BATH IRON WORKS, LETTER WP 0398X 45-VFL/0544/DFC:LAR DATED 26 OCTOBER 1989. MEETS REQUIREMENTS FOR TYPE I VIBRTION PER MIL-STD 147, AERO-NAV LABORATORIES REPORT 4-8687-2 DATED 17 APRIL 1984 ND POST EST REPORT DATE 19 APRIL 1994. APPROVED BY SUPSHIPS, STURGEON BAY, WI LETTER N00024-82-C-2121/073, 260: JER: KML SER 2729 DATED 16 MAY 1985. EXTENSION BATH IRON WORKS LETTER WP0398X 45/VFI/0544/DFC: LER DATED 26 OCTOBER 1986 A
END ITEM IDENTIFICATIONW/S DESIGNATOR TAWARA CLASS LHA
FILTERNOT INCLUDED
FURNISHED ITEMSBRAZING RING AND TAILPIECE AND UNION NUT
MAXIMUM INLET PRESSURE RATINGERR-060
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
VALVE STEM DESIGNDOUBLE SEAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
404 909Interchangeable
interchangeable cross-reference
interchangeable
ANN5Interchangeable
interchangeable cross-reference
interchangeable
MS20365-632CInterchangeable
interchangeable cross-reference
interchangeable
40490-9 PART 40490-903Interchangeable
interchangeable cross-reference
interchangeable
MIL-V-24384Interchangeable
interchangeable cross-reference
interchangeable
40490-903Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40490-902?
40490-902 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace 40490-902?
There are 9 known substitutes for 40490-902: 404 909, ANN5, MS20365-632C and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40490-902?
40490-902 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-482-3586. This indicates validated use in U.S. government and defense supply chains.
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