PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1891-51Valve,regulator

General Regulator Corp. Dba Accudriv · NSN 6685-00-016-3650 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-016-3650 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-016-3650. Primary manufacturer part number: 1891-51.
Features
  • Valve,regulator — FSC 6685
  • General Characteristics Item Description: ONE BRASS BLEED VALVE
  • 1 verified cross-reference
  • Primary manufacturer: General Regulator Corp. Dba Accudriv
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,regulator, cataloged under National Stock Number 6685-00-016-3650, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is General Regulator Corp. Dba Accudriv. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-016-3650
Primary Part Number1891-51
Item NameValve,regulator
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerGeneral Regulator Corp. Dba Accudriv
StatusACTIVE
General Characteristics Item DescriptionONE BRASS BLEED VALVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2915-00-313-5454189151 INTERCHANGEABLE
Sleeve,governor,shaft
Honeywell International Inc Div Aerospace-South Bend (bendix Dr)
7510-01-158-2644 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
5306-01-513-2387 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
1891-51 General Regulator Corp. Dba Accudriv (USA)
Related Parts
2915-00-313-5454INTERCHANGEABLE
SLEEVE,GOVERNOR,SHAFT
189151
7510-01-158-2644INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
5306-01-513-2387INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 6685-00-016-3650?

NSN 6685-00-016-3650 is a Valve,regulator, manufactured by General Regulator Corp. Dba Accudriv, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-016-3650?

NSN 6685-00-016-3650 has 1 cross-referenced part number: 1891-51 (General Regulator Corp. Dba Accudriv).

What NSN replaces 6685-00-016-3650?

There are 3 known substitutes for 6685-00-016-3650: 2915-00-313-5454, 7510-01-158-2644, 5306-01-513-2387. Verify interchangeability with system specifications before substitution.

What are the specifications of 1891-51?

Key specifications for 1891-51: General Characteristics Item Description: ONE BRASS BLEED VALVE; End Item Identification: PROPULSION SYSTEMS. 2 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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