PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

WW-V-35BValve,ball

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 4820-01-346-9673 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-346-9673 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-346-9673. Primary manufacturer part number: WW-V-35B.
Features
  • Valve,ball — FSC 4820
  • Material: COPPER ALLOY 844 BODY
  • Nominal Thread Size: 1.250 INCHES ALL ENDS IN
  • Material: PLASTIC TETRAFLUOROETHYLENE SEAT
  • Nondefinitive Spec/std Data: 2 TYPE AND A CLASS AND 1 STYLE
  • Style Designator: STRAIGHT THRU
  • Material: COPPER ALLOY 844 FLOW CONTROL DEVICE
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy 844 Body construction
General Description

The Valve,ball, cataloged under National Stock Number 4820-01-346-9673, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 17 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-346-9673
Primary Part NumberWW-V-35B
Item NameValve,ball
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
MaterialCOPPER ALLOY 844 BODY
Nominal Thread Size1.250 INCHES ALL ENDS IN
MaterialPLASTIC TETRAFLUOROETHYLENE SEAT
Nondefinitive Spec/std Data2 TYPE AND A CLASS AND 1 STYLE
Style DesignatorSTRAIGHT THRU
MaterialCOPPER ALLOY 844 FLOW CONTROL DEVICE
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
MaterialCOPPER ALLOY 694 STEM
Thread DirectionRIGHT-HAND ALL ENDS
Thread Series DesignatorNPT ALL ENDS
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Media for Which DesignedSTEAM FIRST RESPONSE
Specification/standard Data81348-WW-V-35B GOVERNMENT SPECIFICATION
Valve Operation MethodMANUAL
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
Operating Pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4820-00-242-3183BA-300 INTERCHANGEABLE
Valve,ball
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
4820-01-098-788176-107-01 INTERCHANGEABLE
Valve,ball
Aalberts Integrated Piping Systems Americas, Inc.
4820-01-145-6680086883-5 INTERCHANGEABLE
Valve,ball
Mission Systems Davenport Inc.
4820-01-161-4745MSS SP-110 1IN FIG 1A INTERCHANGEABLE
Valve,ball
Manufacturers Standardization Society of the Valve and Fittings Industry Inc
4820-01-186-598570-100-01 INTERCHANGEABLE
Valve,ball
Aalberts Integrated Piping Systems Americas, Inc.
4820-01-346-1665 INTERCHANGEABLE
Valve,ball
Cross-Reference Index
Part NumberManufacturer
WW-V-35B Federal Specifications Promulgated by General Services Administration Washington DC (USA)
T-595-Y 1.25IPS Nibco Inc (USA)
Related Parts
4820-00-242-3183INTERCHANGEABLE
VALVE,BALL
BA-300
4820-01-098-7881INTERCHANGEABLE
VALVE,BALL
76-107-01
4820-01-145-6680INTERCHANGEABLE
VALVE,BALL
086883-5
4820-01-161-4745INTERCHANGEABLE
VALVE,BALL
MSS SP-110 1IN FIG 1A
4820-01-186-5985INTERCHANGEABLE
VALVE,BALL
70-100-01
4820-01-346-1665INTERCHANGEABLE
VALVE,BALL

Frequently Asked Questions

What is NSN 4820-01-346-9673?

NSN 4820-01-346-9673 is a Valve,ball, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-346-9673?

NSN 4820-01-346-9673 has 2 cross-referenced part numbers: WW-V-35B (Federal Specifications Promulgated by General Services Administration Washington DC), T-595-Y 1.25IPS (Nibco Inc).

What NSN replaces 4820-01-346-9673?

There are 6 known substitutes for 4820-01-346-9673: 4820-00-242-3183, 4820-01-098-7881, 4820-01-145-6680 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of WW-V-35B?

Key specifications for WW-V-35B: Material: COPPER ALLOY 844 BODY; Nominal Thread Size: 1.250 INCHES ALL ENDS IN; Material: PLASTIC TETRAFLUOROETHYLENE SEAT; Nondefinitive Spec/std Data: 2 TYPE AND A CLASS AND 1 STYLE. 17 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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