PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

850-91Gage,pressure,dial Indicating

Aqua-Chem, Inc. Dba Aqua-Chem Inc · NSN 6685-00-073-8897 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-073-8897 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-073-8897. Primary manufacturer part number: 850-91.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Actuation Type: BOURDON TUBE
  • Pointer Type: INDICATING
  • Scale Name: PRESSURE
  • Scale Range: +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS
  • Graduation Unit: 20.0 POUNDS PER SQUARE INCH LBS
  • Dial Size: 2 IN. DIA IN
  • Pointer Color: BLACK
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-073-8897, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 15 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-073-8897
Primary Part Number850-91
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAqua-Chem, Inc. Dba Aqua-Chem Inc
StatusACTIVE
Actuation TypeBOURDON TUBE
Pointer TypeINDICATING
Scale NamePRESSURE
Scale Range+0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS
Graduation Unit20.0 POUNDS PER SQUARE INCH LBS
Dial Size2 IN. DIA IN
Pointer ColorBLACK
AdjustabilityNONADJUSTABLE
Scale Smallest Increment5.0 POUNDS PER SQUARE INCH (PSI) LBS
Connection Quantity1
Scale TypeDIAL
Scale Inscription/background ColorBLACK FIGURES,WHITE BACKGROUND
Connection Size0.250 IN. NPT DIA IN
Connection LocationBACK
Connector Type VentNOT PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5998-00-109-5853 INTERCHANGEABLE
Circuit Card Assembly
5120-00-293-3007HSF-10S INTERCHANGEABLE
Face,hammer,inserted
Williams J H Industrial Products Inc
5330-01-692-7252600-0430-1/2SS INTERCHANGEABLE
Gasket
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
Cross-Reference Index
Part NumberManufacturer
850-91 Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA)
850-91 Aqua-Chem Inc Cleaver-Brooks Div (USA)
Related Parts
5998-00-109-5853INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5120-00-293-3007INTERCHANGEABLE
FACE,HAMMER,INSERTED
HSF-10S
5330-01-692-7252INTERCHANGEABLE
GASKET
600-0430-1/2SS

Frequently Asked Questions

What is NSN 6685-00-073-8897?

NSN 6685-00-073-8897 is a Gage,pressure,dial Indicating, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-073-8897?

NSN 6685-00-073-8897 has 2 cross-referenced part numbers: 850-91 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 850-91 (Aqua-Chem Inc Cleaver-Brooks Div).

What NSN replaces 6685-00-073-8897?

There are 3 known substitutes for 6685-00-073-8897: 5998-00-109-5853, 5120-00-293-3007, 5330-01-692-7252. Verify interchangeability with system specifications before substitution.

What are the specifications of 850-91?

Key specifications for 850-91: Actuation Type: BOURDON TUBE; Pointer Type: INDICATING; Scale Name: PRESSURE; Scale Range: +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS. 15 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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