PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NB25025-E-MAC-2 1/2IN ITEM 4Cap,valve

Pima Valve, Llc · NSN 4820-01-329-3520 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-329-3520 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-329-3520. Primary manufacturer part number: NB25025-E-MAC-2 1/2IN ITEM 4.
Features
  • Cap,valve — FSC 4820
  • Attachment Method: THREADED HOLES
  • Material: COPPER ALLOY
  • Valve Type for Which Designed: GATE
  • Valve Size for Which Designed: 2.500 INCHES IN
  • 3 verified cross-references
  • Primary manufacturer: Pima Valve, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Cap,valve, cataloged under National Stock Number 4820-01-329-3520, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Pima Valve, Llc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-329-3520
Primary Part NumberNB25025-E-MAC-2 1/2IN ITEM 4
Item NameCap,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPima Valve, Llc
StatusACTIVE
Attachment MethodTHREADED HOLES
MaterialCOPPER ALLOY
Valve Type for Which DesignedGATE
Valve Size for Which Designed2.500 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-01-328-65075521 INTERCHANGEABLE
Valve,gate
Hunt Valve Company, Inc.
Cross-Reference Index
Part NumberManufacturer
NB25025-E-MAC-2 1/2IN ITEM 4 Pima Valve, Llc (USA)
NB25025-E-MAC-2 1/2IN ITEM 4 Hunt Valve Company, Inc. (USA)
NB25025-E-MAC Pima Valve, Llc (USA)
Related Parts
4820-01-328-6507INTERCHANGEABLE
VALVE,GATE
5521

Frequently Asked Questions

What is NSN 4820-01-329-3520?

NSN 4820-01-329-3520 is a Cap,valve, manufactured by Pima Valve, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-329-3520?

NSN 4820-01-329-3520 has 3 cross-referenced part numbers: NB25025-E-MAC-2 1/2IN ITEM 4 (Pima Valve, Llc), NB25025-E-MAC-2 1/2IN ITEM 4 (Hunt Valve Company, Inc.), NB25025-E-MAC (Pima Valve, Llc).

What NSN replaces 4820-01-329-3520?

There is 1 known substitute for 4820-01-329-3520: 4820-01-328-6507. Verify interchangeability with system specifications before substitution.

What are the specifications of NB25025-E-MAC-2 1/2IN ITEM 4?

Key specifications for NB25025-E-MAC-2 1/2IN ITEM 4: Attachment Method: THREADED HOLES; Material: COPPER ALLOY; Valve Type for Which Designed: GATE; Valve Size for Which Designed: 2.500 INCHES IN. 4 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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