PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1634Diaphragm,valve,flat

Imi Cash Valve Inc · NSN 4820-01-033-2207 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-033-2207 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-033-2207. Primary manufacturer part number: 1634.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Material: RUBBER AND PLASTIC POLYAMIDE NYLON
  • 3 verified cross-references
  • Primary manufacturer: Imi Cash Valve Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber and Plastic Polyamide Nylon construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-033-2207, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Imi Cash Valve Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-033-2207
Primary Part Number1634
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerImi Cash Valve Inc
StatusACTIVE
MaterialRUBBER AND PLASTIC POLYAMIDE NYLON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-012-1832121832 INTERCHANGEABLE
Screw,machine
Us Army Aviation and Missile Command
6240-00-014-5416 INTERCHANGEABLE
Lamp,incandescent
2010-00-036-56981-871 INTERCHANGEABLE
Case
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
6240-00-057-19661634 INTERCHANGEABLE
Lamp,incandescent
Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
7510-00-067-6844 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
5905-00-106-7007C600012885 INTERCHANGEABLE
Resistor Set,matched
Kearfott Corporation Div Guidance and Navigation Division
5315-00-193-64658A7188 INTERCHANGEABLE
Pin,straight,headless
Napco International Llc Dba Napco International Inc
5330-00-286-6847500245 INTERCHANGEABLE
Seal,plain Encased
Defense Logistics Agency Dba Defense Supply Center Philadelphia
4820-00-288-71871871 INTERCHANGEABLE
Valve,globe
Flowserve Inc
5950-00-289-98841783709-34 INTERCHANGEABLE
Transformer,audio Frequency
Honeywell International Inc. Dba Honeywell International
Cross-Reference Index
Part NumberManufacturer
1871PART1634 Imi Cash Valve Inc (USA)
1634 PRIMARY Imi Cash Valve Inc (USA)
1871 Imi Cash Valve Inc (USA)
Related Parts
5305-00-012-1832INTERCHANGEABLE
SCREW,MACHINE
121832
6240-00-014-5416INTERCHANGEABLE
LAMP,INCANDESCENT
2010-00-036-5698INTERCHANGEABLE
CASE
1-871
6240-00-057-1966INTERCHANGEABLE
LAMP,INCANDESCENT
1634
7510-00-067-6844INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
5905-00-106-7007INTERCHANGEABLE
RESISTOR SET,MATCHED
C600012885
5315-00-193-6465INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
8A7188
5330-00-286-6847INTERCHANGEABLE
SEAL,PLAIN ENCASED
500245
4820-00-288-7187INTERCHANGEABLE
VALVE,GLOBE
1871
5950-00-289-9884INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
1783709-34
4820-00-331-3537INTERCHANGEABLE
VALVE,SAFETY RELIEF
1634
5330-00-362-2115INTERCHANGEABLE
GASKET
F400A336

Frequently Asked Questions

What is NSN 4820-01-033-2207?

NSN 4820-01-033-2207 is a Diaphragm,valve,flat, manufactured by Imi Cash Valve Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-033-2207?

NSN 4820-01-033-2207 has 3 cross-referenced part numbers: 1871PART1634 (Imi Cash Valve Inc), 1634 (Imi Cash Valve Inc), 1871 (Imi Cash Valve Inc).

What NSN replaces 4820-01-033-2207?

There are 12 known substitutes for 4820-01-033-2207: 5305-00-012-1832, 6240-00-014-5416, 2010-00-036-5698 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1634?

Key specifications for 1634: Material: RUBBER AND PLASTIC POLYAMIDE NYLON. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com