PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X-240Valve,safety Relief

Cooper Machinery Services Llc · NSN 4820-00-097-1947 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-097-1947 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-097-1947. Primary manufacturer part number: X-240.
Features
  • Valve,safety Relief — FSC 4820
  • Disk Loading Method: SPRING
  • Thread Series Designator: NPT ALL ENDS
  • Valve Operation Method: AUTOMATIC
  • Bonnet Attachment Method: INTEGRAL
  • Bonnet Type: EXPOSED SPRING
  • Surface Treatment: PAINT LOCATION NOT OTHERWISE SPECIFIED
  • Material: STEEL FLOW CONTROL DEVICE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Flow Control Device construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-097-1947, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Cooper Machinery Services Llc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-097-1947
Primary Part NumberX-240
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCooper Machinery Services Llc
StatusCANCELLED
Disk Loading MethodSPRING
Thread Series DesignatorNPT ALL ENDS
Valve Operation MethodAUTOMATIC
Bonnet Attachment MethodINTEGRAL
Bonnet TypeEXPOSED SPRING
Surface TreatmentPAINT LOCATION NOT OTHERWISE SPECIFIED
MaterialSTEEL FLOW CONTROL DEVICE
Flow Control DeviceDISK
MaterialIRON CAST BODY
Connection StylePLAIN (PIPE) ALL ENDS
Nominal Thread Size0.500 INCHES ALL ENDS IN
Thread DirectionRIGHT-HAND ALL ENDS
Style DesignatorANGLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5310-00-011-0405 INTERCHANGEABLE
Washer,lock
5330-00-154-3110194735PC238 INTERCHANGEABLE
Seal,plain Encased
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5340-00-612-2897P2325 INTERCHANGEABLE
Plate,mending
Unistrut International Corporation Dba Unistrut Diversified Products
5305-01-538-0893X204 INTERCHANGEABLE
Screw,machine
Endries International, Inc. Dba Servtonics, an Endries International, Inc.
5965-01-576-8847970285-0403 INTERCHANGEABLE
Loudspeaker Assembly
Logitech Inc
Cross-Reference Index
Part NumberManufacturer
NY34PCS3340 Cooper Cameron Corp Ajax-Superior Div (USA)
NY121PCS3340 Cooper Cameron Corp Ajax-Superior Div (USA)
X204 Cooper Cameron Corp Ajax-Superior Div (USA)
X-240 PRIMARY Cooper Machinery Services Llc (USA)
Related Parts
5310-00-011-0405INTERCHANGEABLE
WASHER,LOCK
5330-00-154-3110INTERCHANGEABLE
SEAL,PLAIN ENCASED
194735PC238
5340-00-612-2897INTERCHANGEABLE
PLATE,MENDING
P2325
5305-01-538-0893INTERCHANGEABLE
SCREW,MACHINE
X204
5965-01-576-8847INTERCHANGEABLE
LOUDSPEAKER ASSEMBLY
970285-0403

Frequently Asked Questions

What is NSN 4820-00-097-1947?

NSN 4820-00-097-1947 is a Valve,safety Relief, manufactured by Cooper Machinery Services Llc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-097-1947?

NSN 4820-00-097-1947 has 4 cross-referenced part numbers: NY34PCS3340 (Cooper Cameron Corp Ajax-Superior Div), NY121PCS3340 (Cooper Cameron Corp Ajax-Superior Div), X204 (Cooper Cameron Corp Ajax-Superior Div), X-240 (Cooper Machinery Services Llc).

What NSN replaces 4820-00-097-1947?

There are 5 known substitutes for 4820-00-097-1947: 5310-00-011-0405, 5330-00-154-3110, 5340-00-612-2897 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of X-240?

Key specifications for X-240: Disk Loading Method: SPRING; Thread Series Designator: NPT ALL ENDS; Valve Operation Method: AUTOMATIC; Bonnet Attachment Method: INTEGRAL. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-097-1947 still in active supply?

NSN 4820-00-097-1947 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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