PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SS845-1889587 ASSYCF 1 1/4INValve,globe

Naval Ship Systems Command · NSN 4820-01-127-3012 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-127-3012 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-127-3012. Primary manufacturer part number: SS845-1889587 ASSYCF 1 1/4IN.
Features
  • Valve,globe — FSC 4820
  • Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS
  • Material: NICKEL ALLOY AND PLASTIC POLYCHLOROTRIFLUOROETHYLENE FLOW CONTROL DEVICE
  • Material Document and Classification: QQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE SEAT
  • Renewable Seat Ring Type: THREADED
  • Bonnet Type: INSIDE SCREW
  • Nominal Pipe Size Accommodated: 1.250 INCHES ALL ENDS IN
  • Material Document and Classification: QQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE BODY
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy and Plastic Polychlorotrifluoroethylene Flow Control Device construction
General Description

The Valve,globe, cataloged under National Stock Number 4820-01-127-3012, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN4820-01-127-3012
Primary Part NumberSS845-1889587 ASSYCF 1 1/4IN
Item NameValve,globe
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Connection TypeUNTHREADED INTERNAL PIPE ALL ENDS
MaterialNICKEL ALLOY AND PLASTIC POLYCHLOROTRIFLUOROETHYLENE FLOW CONTROL DEVICE
Material Document and ClassificationQQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE SEAT
Renewable Seat Ring TypeTHREADED
Bonnet TypeINSIDE SCREW
Nominal Pipe Size Accommodated1.250 INCHES ALL ENDS IN
Material Document and ClassificationQQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE BODY
Material Document and ClassificationQQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
Maximum Operating Temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
Valve Operation MethodMANUAL
Connection StyleSOCKET WITH BRAZING RING ALL ENDS
Bonnet Attachment MethodUNION
Operating Pressure700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Style DesignatorSTRAIGHT THRU
Material Document and ClassificationQQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE STEM
MaterialNICKEL ALLOY STEM
MaterialNICKEL ALLOY SEAT
MaterialCOPPER ALLOY 922 BODY
Flow Control DeviceDISK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-871-893554386 INTERCHANGEABLE
Seat,valve
The Walworth Company
4820-01-043-36262620-902ASSYCF1 1/2INPC4 INTERCHANGEABLE
Seat,valve
The Walworth Company
4820-01-067-365384094-F-940 INTERCHANGEABLE
Disk,valve
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
4820-01-071-98955160-B1-380 INTERCHANGEABLE
Seat,valve
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
4820-01-073-58492620-902 ASSYC1-2INPC4 INTERCHANGEABLE
Seat,valve
Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-075-6588803-2177934-X7XX-19 INTERCHANGEABLE
Seat,valve
Naval Ship Systems Command
5310-01-087-7113SS845-1889587PC6 1IN INTERCHANGEABLE
Locknut,disk Valve
Naval Ship Systems Command
4730-01-088-448470030854 INTERCHANGEABLE
Packing Nut
The Walworth Company
4820-01-105-357251163-F-380 INTERCHANGEABLE
Seat,valve
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
4820-01-113-07832620-902ASSYB PIECE24 1-2IN INTERCHANGEABLE
Cap,valve
Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
Part NumberManufacturer
SS845-1889587 ASSYCF 1 1/4IN PRIMARY Naval Ship Systems Command (USA)
1889587 ASSY CF 1 1/4IN Walworth Co Marine Div (USA)
SS845-1889587 Naval Ship Systems Command (USA)
Related Parts
4820-00-871-8935INTERCHANGEABLE
SEAT,VALVE
54386
4820-01-043-3626INTERCHANGEABLE
SEAT,VALVE
2620-902ASSYCF1 1/2INPC4
4820-01-067-3653INTERCHANGEABLE
DISK,VALVE
84094-F-940
4820-01-071-9895INTERCHANGEABLE
SEAT,VALVE
5160-B1-380
4820-01-073-5849INTERCHANGEABLE
SEAT,VALVE
2620-902 ASSYC1-2INPC4
4820-01-075-6588INTERCHANGEABLE
SEAT,VALVE
803-2177934-X7XX-19
5310-01-087-7113INTERCHANGEABLE
LOCKNUT,DISK VALVE
SS845-1889587PC6 1IN
4730-01-088-4484INTERCHANGEABLE
PACKING NUT
70030854
4820-01-105-3572INTERCHANGEABLE
SEAT,VALVE
51163-F-380
4820-01-113-0783INTERCHANGEABLE
CAP,VALVE
2620-902ASSYB PIECE24 1-2IN
4820-01-117-9670INTERCHANGEABLE
DISK,VALVE
2620-902-ASSYB PC 27
4820-01-118-0381INTERCHANGEABLE
VALVE,ANGLE
803-2177934-C626AF

Frequently Asked Questions

What is NSN 4820-01-127-3012?

NSN 4820-01-127-3012 is a Valve,globe, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-127-3012?

NSN 4820-01-127-3012 has 3 cross-referenced part numbers: SS845-1889587 ASSYCF 1 1/4IN (Naval Ship Systems Command), 1889587 ASSY CF 1 1/4IN (Walworth Co Marine Div), SS845-1889587 (Naval Ship Systems Command).

What NSN replaces 4820-01-127-3012?

There are 12 known substitutes for 4820-01-127-3012: 4820-00-871-8935, 4820-01-043-3626, 4820-01-067-3653 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SS845-1889587 ASSYCF 1 1/4IN?

Key specifications for SS845-1889587 ASSYCF 1 1/4IN: Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS; Material: NICKEL ALLOY AND PLASTIC POLYCHLOROTRIFLUOROETHYLENE FLOW CONTROL DEVICE; Material Document and Classification: QQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE SEAT; Renewable Seat Ring Type: THREADED. 20 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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