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0391023 — VALVE ASSEMBLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

0391023: VALVE ASSEMBLY.

The VALVE ASSEMBLY is a the manufacturer industrial component. Key specifications include valve_size: 1.50 INCHES IN, body_material: COPPER ALLOY, operating_pressure_and_type: 175.00 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS, part_name_assigned_by_controlling_agency: REDUCED PRESSURE ZONE ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-659-2086, 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
0391023
NSN: 4820-01-659-2086
FSC: 4820 — Valves, Nonpowered
CAGE: 79227 — WATTS REGULATOR COMPANY (USA)
SPECIFICATIONS
valve_size1.50 INCHES IN
body_materialCOPPER ALLOY
operating_pressure_and_type175.00 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
part_name_assigned_by_controlling_agencyREDUCED PRESSURE ZONE ASSEMBLY
NSN4820-01-659-2086
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 0391023 · 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 AND TYPE: 175.00 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
•
VALVE SIZE: 1.50 INCHES IN
•
BODY MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
OPERATING PRESSURE AND TYPE175.00 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS
VALVE SIZE1.50 INCHES IN
BODY MATERIALCOPPER ALLOY
PART NAME ASSIGNED BY CONTROLLING AGENCYREDUCED PRESSURE ZONE ASSEMBLY
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 2
20841303Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LF909M1QT-Z2 1-1/2INSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 0391023?
0391023 is a VALVE ASSEMBLY.
What parts can replace 0391023?
There are 2 known substitutes for 0391023: 20841303, LF909M1QT-Z2 1-1/2IN. Substitute compatibility should be verified for your specific system.
What is the NSN for 0391023?
0391023 is cataloged in the U.S. Government catalog under NSN 4820-01-659-2086. 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.