PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14973Seat,demand Valve

Mission Systems Orchard Park Inc · NSN 1660-00-633-2590 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-633-2590 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-633-2590. Primary manufacturer part number: 14973.
Features
  • Seat,demand Valve — FSC 1660
  • 2 verified cross-references
  • Primary manufacturer: Mission Systems Orchard Park Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,demand Valve, cataloged under National Stock Number 1660-00-633-2590, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Mission Systems Orchard Park Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,demand Valve
FSC / FSG1660 — No Item Name Available (FSG 16)
ManufacturersMission Systems Orchard Park Inc (CAGE 04577); Ingersoll-Rand Company Dba Ingersoll-Rand (CAGE 03990)
Technical Specifications
ParameterValue
NSN1660-00-633-2590
Primary Part Number14973
Item NameSeat,demand Valve
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerMission Systems Orchard Park Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5999-00-320-434214973 INTERCHANGEABLE
Parts Kit,electronic Equipment
Dayton-Granger, Inc.
4330-00-733-436899134229 INTERCHANGEABLE
Sleeve,speed Indicator
Alfa Laval Inc
6520-01-003-313714973 INTERCHANGEABLE
Bur,dental,excavating
Ss White Burs Llc
5320-01-107-12571497-3 INTERCHANGEABLE
Pin-Rivet
Howmet Global Fastening Systems Inc Div Torrance Operations
5330-01-186-186314987 INTERCHANGEABLE
V Cup
Hein Werner Corp
5996-01-203-193814973 INTERCHANGEABLE
Amplifier Subassembly
Giga-Tronics Incorporated Dba Giga-Tronics
5330-01-277-2243NW14973 INTERCHANGEABLE
Gasket
Tld Wollard Llc
Cross-Reference Index
Part NumberManufacturer
14973 PRIMARY Mission Systems Orchard Park Inc (USA)
14973 Ingersoll-Rand Company Dba Ingersoll-Rand (USA)
Related Parts
5999-00-320-4342INTERCHANGEABLE
PARTS KIT,ELECTRONIC EQUIPMENT
14973
4330-00-733-4368INTERCHANGEABLE
SLEEVE,SPEED INDICATOR
99134229
6520-01-003-3137INTERCHANGEABLE
BUR,DENTAL,EXCAVATING
14973
5320-01-107-1257INTERCHANGEABLE
PIN-RIVET
1497-3
5330-01-186-1863INTERCHANGEABLE
V CUP
14987
5996-01-203-1938INTERCHANGEABLE
AMPLIFIER SUBASSEMBLY
14973
5330-01-277-2243INTERCHANGEABLE
GASKET
NW14973

Frequently Asked Questions

What is NSN 1660-00-633-2590?

NSN 1660-00-633-2590 is a Seat,demand Valve, manufactured by Mission Systems Orchard Park Inc, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-633-2590?

NSN 1660-00-633-2590 has 2 cross-referenced part numbers: 14973 (Mission Systems Orchard Park Inc), 14973 (Ingersoll-Rand Company Dba Ingersoll-Rand).

What NSN replaces 1660-00-633-2590?

There are 7 known substitutes for 1660-00-633-2590: 5999-00-320-4342, 4330-00-733-4368, 6520-01-003-3137 and 4 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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