PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1.50-12G8LJ-N05 7HValve,y

Conval, Inc. · NSN 4820-01-356-2641 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-356-2641 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-356-2641. Primary manufacturer part number: 1.50-12G8LJ-N05 7H.
Features
  • Valve,y — FSC 4820
  • Bonnet Attachment Method: BOLTED
  • Material: STEEL BODY
  • Flow Control Device: DISK
  • Flange Face Design: RAISED STRAIGHT ALL ENDS
  • Nondefinitive Spec/std Data: 2 TYPE AND 2 CLASS
  • Raised Face Nominal Height: 0.250 INCHES ALL ENDS IN
  • Bolt Circle Nominal Diameter: 4.875 INCHES ALL ENDS IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Body construction
General Description

The Valve,y, cataloged under National Stock Number 4820-01-356-2641, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Conval, Inc.. Government technical data includes 26 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-356-2641
Primary Part Number1.50-12G8LJ-N05 7H
Item NameValve,y
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerConval, Inc.
StatusACTIVE
Bonnet Attachment MethodBOLTED
MaterialSTEEL BODY
Flow Control DeviceDISK
Flange Face DesignRAISED STRAIGHT ALL ENDS
Nondefinitive Spec/std Data2 TYPE AND 2 CLASS
Raised Face Nominal Height0.250 INCHES ALL ENDS IN
Bolt Circle Nominal Diameter4.875 INCHES ALL ENDS IN
Maximum Operating Temp800.0 FAHRENHEIT SINGLE RESPONSE DEGF
MaterialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
Nominal Thickness1.250 INCHES ALL ENDS IN
MaterialSTEEL CORROSION RESISTING SEAT
Style DesignatorSTRAIGHT THRU Y-PATTERN FLANGED ENDS
Operating Pressure1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MaterialSTEEL CORROSION RESISTING STEM
Flange ShapeROUND WITH HOLES ALL ENDS
Valve Operation MethodMANUAL
Bolt Hole Nominal Diameter1.125 INCHES ALL ENDS IN
Bolt Hole Quantity4 ALL ENDS
Specification/standard Data81349-MIL-V-17737F GOVERNMENT SPECIFICATION
Nominal Outside Diameter7.000 INCHES ALL ENDS IN
Face to Face Distance15.500 INCHES IN
Valve Size1.500 INCHES IN
Connection TypeFLANGE ALL ENDS
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Bonnet TypeOUTSIDE SCREW-YOKE
Raised Face Nominal Diameter2.875 INCHES ALL ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4820-00-287-4595 INTERCHANGEABLE
Valve,angle
4820-00-601-0972803-2177525-M725MOD600PSI INTERCHANGEABLE
Valve,angle
Naval Ship Systems Command
4820-01-018-3780F073076B2TS/33652-6D/882010602 INTERCHANGEABLE
Valve,y
Velan Valve Corp.
4820-01-018-3781F073076B02TS/33652-6D/882010603 INTERCHANGEABLE
Valve,y
Velan Valve Corp.
4820-01-040-8971 INTERCHANGEABLE
Valve,angle
4820-01-140-4834F07-2076B-02TS 3362-7LKDVC INTERCHANGEABLE
Valve,y
Velan Valve Corp.
4820-01-142-8701 INTERCHANGEABLE
Valve,globe
Cross-Reference Index
Part NumberManufacturer
1.50-12G8LJ-N05 7H Conval, Inc. (USA)
1.50-12G8LJ-N057H-41-6 Conval, Inc. (USA)
MIL-V-17737 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
12G8LJ-N05 Conval, Inc. (USA)
Related Parts
4820-00-287-4595INTERCHANGEABLE
VALVE,ANGLE
4820-00-601-0972INTERCHANGEABLE
VALVE,ANGLE
803-2177525-M725MOD600PSI
4820-01-018-3780INTERCHANGEABLE
VALVE,Y
F073076B2TS/33652-6D/882010602
4820-01-018-3781INTERCHANGEABLE
VALVE,Y
F073076B02TS/33652-6D/882010603
4820-01-040-8971INTERCHANGEABLE
VALVE,ANGLE
4820-01-140-4834INTERCHANGEABLE
VALVE,Y
F07-2076B-02TS 3362-7LKDVC
4820-01-142-8701INTERCHANGEABLE
VALVE,GLOBE

Frequently Asked Questions

What is NSN 4820-01-356-2641?

NSN 4820-01-356-2641 is a Valve,y, manufactured by Conval, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-356-2641?

NSN 4820-01-356-2641 has 4 cross-referenced part numbers: 1.50-12G8LJ-N05 7H (Conval, Inc.), 1.50-12G8LJ-N057H-41-6 (Conval, Inc.), MIL-V-17737 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 12G8LJ-N05 (Conval, Inc.).

What NSN replaces 4820-01-356-2641?

There are 7 known substitutes for 4820-01-356-2641: 4820-00-287-4595, 4820-00-601-0972, 4820-01-018-3780 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1.50-12G8LJ-N05 7H?

Key specifications for 1.50-12G8LJ-N05 7H: Bonnet Attachment Method: BOLTED; Material: STEEL BODY; Flow Control Device: DISK; Flange Face Design: RAISED STRAIGHT ALL ENDS. 26 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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