PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18331Valve,ball

United States Plastic Corp · NSN 4820-01-672-6844 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-672-6844 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-672-6844. Primary manufacturer part number: 18331.
Features
  • Valve,ball — FSC 4820
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Valve Size: 0.500 INCHES IN
  • Nominal Length: 2.480 INCHES ALL ENDS IN
  • Style Designator: STRAIGHT THRU
  • 2 verified cross-references
  • Primary manufacturer: United States Plastic Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,ball, cataloged under National Stock Number 4820-01-672-6844, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is United States Plastic Corp. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-672-6844
Primary Part Number18331
Item NameValve,ball
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerUnited States Plastic Corp
StatusACTIVE
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Valve Size0.500 INCHES IN
Nominal Length2.480 INCHES ALL ENDS IN
Style DesignatorSTRAIGHT THRU
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5330-00-291-234960239 INTERCHANGEABLE
Seal,plain Encased
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5120-00-785-46441833-1 INTERCHANGEABLE
Cumalong,conductor
Cooper Power Systems, Inc. Dba Cooper Power Systems, Inc.
5998-00-883-9084 INTERCHANGEABLE
Electronic Components Assembly
1630-00-925-8550183-31 INTERCHANGEABLE
Retainer,wheel,landing
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
5133-01-083-9295 INTERCHANGEABLE
Drill,twist
6660-01-423-6639 INTERCHANGEABLE
Gauge,vane Torque
6660-01-443-111518331 INTERCHANGEABLE
Indicator,wind Direction and Spe
R. M. Young Company Llc
4130-01-482-155418331 INTERCHANGEABLE
Vacu-Disc
Dcm Clean Air Products, Inc.
5962-01-513-6308GEM31521BFA INTERCHANGEABLE
Microcircuit,memory
Sri International
Cross-Reference Index
Part NumberManufacturer
18331 PRIMARY United States Plastic Corp (USA)
V08491CE Colonial Engineering, Inc (USA)
Related Parts
5330-00-291-2349INTERCHANGEABLE
SEAL,PLAIN ENCASED
60239
5120-00-785-4644INTERCHANGEABLE
CUMALONG,CONDUCTOR
1833-1
5998-00-883-9084INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
1630-00-925-8550INTERCHANGEABLE
RETAINER,WHEEL,LANDING
183-31
5133-01-083-9295INTERCHANGEABLE
DRILL,TWIST
6660-01-423-6639INTERCHANGEABLE
GAUGE,VANE TORQUE
6660-01-443-1115INTERCHANGEABLE
INDICATOR,WIND DIRECTION AND SPE
18331
4130-01-482-1554INTERCHANGEABLE
VACU-DISC
18331
5962-01-513-6308INTERCHANGEABLE
MICROCIRCUIT,MEMORY
GEM31521BFA

Frequently Asked Questions

What is NSN 4820-01-672-6844?

NSN 4820-01-672-6844 is a Valve,ball, manufactured by United States Plastic Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-672-6844?

NSN 4820-01-672-6844 has 2 cross-referenced part numbers: 18331 (United States Plastic Corp), V08491CE (Colonial Engineering, Inc).

What NSN replaces 4820-01-672-6844?

There are 9 known substitutes for 4820-01-672-6844: 5330-00-291-2349, 5120-00-785-4644, 5998-00-883-9084 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18331?

Key specifications for 18331: Special Features: BALL VALVE HAS A THERMOPLASTIC DESIGN THAT ELIMINATES PROCESS AND ATOMOSPHERIC CORROSION; VALVES ARE MOLDED FROM ASTM D1784, CELL CLASSIFICATION 23447 VIRGIN CPVC RESINS. SUITABLE FOR COLD AND HOT WATER SYSTEMS. NSF-61 APPROVE FOR POTABLE WATER SERVICE; PRODUCTS ARE CERIFIED TO NSF/ANSI 61; DO NOT USE IN COMPRESSOR AIR OR GAS; NON-SHOCK WATER AT 73 DEGREES FAHRENHEIT PRESSURE; 100 PERCENT LEAKED-TEST; Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Part Name Assigned by Controlling Agency: 3/4 INCHES CPVC CTS BALL VALVE IN; Valve Size: 0.500 INCHES IN. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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