PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2-908Valve,safety Relief

Trw Inc Trw Mission Drillling Products Div · NSN 4820-00-980-4917 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-980-4917 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-980-4917. Primary manufacturer part number: 2-908.
Features
  • Valve,safety Relief — FSC 4820
  • Material: STEEL CORROSION RESISTING SEAT
  • Material: STEEL CORROSION RESISTING STEM
  • Valve Operation Method: AUTOMATIC
  • Connection Type: THREADED INTERNAL PIPE FIRST END
  • Flow Control Device: DISK
  • Thread Direction: RIGHT-HAND FIRST END
  • Valve Discharge Flow Rate: 110.0 POUNDS PER HOUR LBS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Seat construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-980-4917, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trw Inc Trw Mission Drillling Products Div. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, 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
NSN4820-00-980-4917
Primary Part Number2-908
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrw Inc Trw Mission Drillling Products Div
StatusACTIVE
MaterialSTEEL CORROSION RESISTING SEAT
MaterialSTEEL CORROSION RESISTING STEM
Valve Operation MethodAUTOMATIC
Connection TypeTHREADED INTERNAL PIPE FIRST END
Flow Control DeviceDISK
Thread DirectionRIGHT-HAND FIRST END
Valve Discharge Flow Rate110.0 POUNDS PER HOUR LBS
Disk Loading MethodSPRING
Bonnet Attachment MethodTHREADED
Criticality Code JustificationZZZY
Thread Series DesignatorNPT FIRST END
Nominal Thread Size5.000 INCHES FIRST END IN
MaterialSTEEL CORROSION RESISTING BODY
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
Bonnet TypeINSIDE SCREW
Connection StylePLAIN,OPTIONAL END(PIPE) FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-022-0066BBAX1C INTERCHANGEABLE
Nut,plain,hexagon
U S Army Tank Automotive Command Amsta-Im-Mm
5935-00-080-45402908 INTERCHANGEABLE
Connector,plug,electrical
General Microwave Corporation Div Kratos Microwave Electronics
3110-00-108-7469290-8 INTERCHANGEABLE
Bearing,roller,needle
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5330-00-141-42192908 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
3110-00-156-1876 INTERCHANGEABLE
Bearing,ball,thrust
4730-00-249-8278182-82 INTERCHANGEABLE
Tee,pipe to Tube
Dresser Industries Inc Leroi Div
6750-00-275-0712 INTERCHANGEABLE
Ammonium Hydroxide,photographic
5950-00-295-7561 INTERCHANGEABLE
Transformer,power
2530-00-431-63683450 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
6210-00-472-6067 INTERCHANGEABLE
Globe,electric Light
Cross-Reference Index
Part NumberManufacturer
2-908 Trw Inc Trw Mission Drillling Products Div (USA)
2-908CP Naval Inventory Control Point Mechanicsburg (USA)
18282CP Naval Inventory Control Point Mechanicsburg (USA)
18282 Fluid Mechanics Valve Company (USA)
Related Parts
5310-00-022-0066INTERCHANGEABLE
NUT,PLAIN,HEXAGON
BBAX1C
5935-00-080-4540INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
2908
3110-00-108-7469INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
290-8
5330-00-141-4219INTERCHANGEABLE
SEAL,PLAIN ENCASED
2908
3110-00-156-1876INTERCHANGEABLE
BEARING,BALL,THRUST
4730-00-249-8278INTERCHANGEABLE
TEE,PIPE TO TUBE
182-82
6750-00-275-0712INTERCHANGEABLE
AMMONIUM HYDROXIDE,PHOTOGRAPHIC
5950-00-295-7561INTERCHANGEABLE
TRANSFORMER,POWER
2530-00-431-6368INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
3450
6210-00-472-6067INTERCHANGEABLE
GLOBE,ELECTRIC LIGHT
2530-00-763-6319INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE WHEEL
264448C92
6645-00-959-6500INTERCHANGEABLE
CLOCK,WALL
2908

Frequently Asked Questions

What is NSN 4820-00-980-4917?

NSN 4820-00-980-4917 is a Valve,safety Relief, manufactured by Trw Inc Trw Mission Drillling Products Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-980-4917?

NSN 4820-00-980-4917 has 4 cross-referenced part numbers: 2-908 (Trw Inc Trw Mission Drillling Products Div), 2-908CP (Naval Inventory Control Point Mechanicsburg), 18282CP (Naval Inventory Control Point Mechanicsburg), 18282 (Fluid Mechanics Valve Company).

What NSN replaces 4820-00-980-4917?

There are 12 known substitutes for 4820-00-980-4917: 5310-00-022-0066, 5935-00-080-4540, 3110-00-108-7469 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2-908?

Key specifications for 2-908: Material: STEEL CORROSION RESISTING SEAT; Material: STEEL CORROSION RESISTING STEM; Valve Operation Method: AUTOMATIC; Connection Type: THREADED INTERNAL PIPE FIRST END. 16 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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