PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2019901R0056Valve,safety Relief

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-00-289-3745 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-289-3745 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-289-3745. Primary manufacturer part number: 2019901R0056.
Features
  • Valve,safety Relief — FSC 4820
  • Bonnet Attachment Method: BOLTED
  • Connection Style: SOCKET WITH BRAZING RING ALL ENDS
  • Renewable Seat Ring Type: THREADED
  • Valve Operation Method: AUTOMATIC
  • Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN
  • Flow Control Device: DISK
  • Media for Which Designed: WATER, FRESH SINGLE RESPONSE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-289-3745, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-289-3745
Primary Part Number2019901R0056
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusCANCELLED
Bonnet Attachment MethodBOLTED
Connection StyleSOCKET WITH BRAZING RING ALL ENDS
Renewable Seat Ring TypeTHREADED
Valve Operation MethodAUTOMATIC
Nominal Pipe Size Accommodated1.000 INCHES ALL ENDS IN
Flow Control DeviceDISK
Media for Which DesignedWATER, FRESH SINGLE RESPONSE
Operating Pressure100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Style DesignatorANGLE
Connection TypeUNTHREADED INTERNAL PIPE ALL ENDS
Maximum Operating Temp246.0 FAHRENHEIT SINGLE RESPONSE DEGF
MaterialCOPPER ALLOY OVERALL
Features ProvidedBONNET PACKING AND PRESSURE TIGHT OUTLET SIDE
Disk Loading MethodSPRING
Adjustable Pressure Range+56.0 TO 64.0 POUNDS PER SQUARE INCH LBS
Bonnet TypeEXPOSED SPRING
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5330-00-146-7452HE4-594C INTERCHANGEABLE
Gasket
Schramm, Inc.
5330-01-016-0576 INTERCHANGEABLE
Packing,preformed
5995-01-067-27999047 INTERCHANGEABLE
Cable Assembly,printed,flexible
L3 Technologies, Inc. Div Communication Systems-West
5310-01-119-93519047 INTERCHANGEABLE
Nut,plain,round
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
2540-01-195-29309047 INTERCHANGEABLE
Seat,vehicular
Fairchild Industrial Products Company
6910-01-559-7065 INTERCHANGEABLE
Training Aid,needle Intraosseous
5340-01-566-8044CBL807 INTERCHANGEABLE
Cable Lock,narcotics Box
Secure-It, Inc.
Cross-Reference Index
Part NumberManufacturer
9047 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
2019901R0056 PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
MIL-V-24332 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-24332 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-V-24332 GRADE B 1IN 65PSI Naval Inventory Control Point Mechanicsburg (USA)
20199JM41M Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
S4824H3123499 Naval Sea Systems Command (USA)
S4824H3123499 Naval Ship Systems Command (USA)
20199JM41M Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
Related Parts
5330-00-146-7452INTERCHANGEABLE
GASKET
HE4-594C
5330-01-016-0576INTERCHANGEABLE
PACKING,PREFORMED
5995-01-067-2799INTERCHANGEABLE
CABLE ASSEMBLY,PRINTED,FLEXIBLE
9047
5310-01-119-9351INTERCHANGEABLE
NUT,PLAIN,ROUND
9047
2540-01-195-2930INTERCHANGEABLE
SEAT,VEHICULAR
9047
6910-01-559-7065INTERCHANGEABLE
TRAINING AID,NEEDLE INTRAOSSEOUS
5340-01-566-8044INTERCHANGEABLE
CABLE LOCK,NARCOTICS BOX
CBL807

Frequently Asked Questions

What is NSN 4820-00-289-3745?

NSN 4820-00-289-3745 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-289-3745?

NSN 4820-00-289-3745 has 9 cross-referenced part numbers: 9047 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 2019901R0056 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), MIL-V-24332 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-24332 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-V-24332 GRADE B 1IN 65PSI (Naval Inventory Control Point Mechanicsburg) and 4 more.

What NSN replaces 4820-00-289-3745?

There are 7 known substitutes for 4820-00-289-3745: 5330-00-146-7452, 5330-01-016-0576, 5995-01-067-2799 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2019901R0056?

Key specifications for 2019901R0056: Bonnet Attachment Method: BOLTED; Connection Style: SOCKET WITH BRAZING RING ALL ENDS; Renewable Seat Ring Type: THREADED; Valve Operation Method: AUTOMATIC. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-289-3745 still in active supply?

NSN 4820-00-289-3745 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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