PartsTable
Technical Data Sheet

1146-M-3/8IN — VALVE,GATE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1146-M-3/8IN: VALVE,GATE.

The VALVE,GATE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY SEAT, stem_type: NONRISING, valve_size: 0.562 INCHES IN, bonnet_type: INSIDE SCREW, connection_type: SOCKET, WELD, TUBE, valve_operation_method: MANUAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-273-7645, 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
1146-M-3/8IN
NSN: 4820-01-273-7645
FSC: 4820 — Valves, Nonpowered
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
materialNICKEL ALLOY SEAT
stem_typeNONRISING
valve_size0.562 INCHES IN
bonnet_typeINSIDE SCREW
connection_typeSOCKET, WELD, TUBE
valve_operation_methodMANUAL
bonnet_attachment_methodTHREADED
inlet_relationship_with_outletIDENTICAL
nominal_outside_diameter_tube_accommodated0.375 INCHES IN
NSN4820-01-273-7645
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1146-M-3/8IN · 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
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
•
STEM TYPE: NONRISING
•
CONNECTION TYPE: SOCKET, WELD, TUBE
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES IN
•
VALVE SIZE: 0.562 INCHES IN
•
BONNET TYPE: INSIDE SCREW
•
BONNET ATTACHMENT METHOD: THREADED
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS
INLET RELATIONSHIP WITH OUTLETIDENTICAL
STEM TYPENONRISING
CONNECTION TYPESOCKET, WELD, TUBE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES IN
VALVE SIZE0.562 INCHES IN
BONNET TYPEINSIDE SCREW
BONNET ATTACHMENT METHODTHREADED
MATERIALCOPPER ALLOY BODY
MATERIALNICKEL ALLOY STEM
MATERIALNICKEL ALLOY SEAT
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1146-M-3/8IN?
1146-M-3/8IN is a VALVE,GATE.
What is the NSN for 1146-M-3/8IN?
1146-M-3/8IN is cataloged in the U.S. Government catalog under NSN 4820-01-273-7645. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.