PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Y303700511Valve,regulating,fluid Pressure

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-119-1177 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-119-1177 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-119-1177. Primary manufacturer part number: Y303700511.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Valve Loading Method: SPRING
  • Outlet Pressure Range: 100.0 TO 450.0 CAMERA MOUNT
  • Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE
  • First End Raised Face Height: 0.062 INCHES NOMINAL IN
  • Body Style: STRAIGHT THRU
  • First End Bolt Hole Diameter: 0.625 INCHES NOMINAL IN
  • First End Bolt Circle Diameter: 2.750 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Flow Control Device construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-119-1177, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-119-1177
Primary Part NumberY303700511
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Valve Loading MethodSPRING
Outlet Pressure Range100.0 TO 450.0 CAMERA MOUNT
MaterialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
First End Raised Face Height0.062 INCHES NOMINAL IN
Body StyleSTRAIGHT THRU
First End Bolt Hole Diameter0.625 INCHES NOMINAL IN
First End Bolt Circle Diameter2.750 INCHES NOMINAL IN
First End Flange Shape StyleROUND W/ BOLT HOLES
First End Flange Thickness0.375 INCHES NOMINAL IN
First End Bolt Hole Quantity4
First End Flange Outside Diameter3.875 INCHES NOMINAL IN
Second End Relationship with First EndIDENTICAL
Media for Which DesignedSTEAM
First End Connection TypeRAISED FACE FLANGE
First End Style DesignatorRAISED
First End Raised Face Diameter1.688 INCHES NOMINAL IN
Flow Control DeviceDISK, FLAT, TOP AND BOTTOM GUIDED
FilterNOT INCLUDED
Material Document and ClassificationUNABLE TO DECODE
Regulation TypeAUTOMATIC SINGLE STAGE
End Connection Quantity2
MaterialSTEEL CORROSION RESISTING SEAT
Temp Rating550.0 FAHRENHEIT MAXIMUM DEGF
Maximum Inlet Pressure RatingERR-060
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-00-007-4595Y303701011 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
Y303700511 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390N/FLNS5D 2 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390N-2172IN-LNS-5D3/4IN Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
21721N ITEM 5 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390N AND 2172 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
21721N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390N-LNS-5D-3/4IN Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4820-00-007-4595INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303701011

Frequently Asked Questions

What is NSN 4820-01-119-1177?

NSN 4820-01-119-1177 is a Valve,regulating,fluid Pressure, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-119-1177?

NSN 4820-01-119-1177 has 7 cross-referenced part numbers: Y303700511 (Leslie Controls, Inc. Dba Leslie Controls Inc), 17390N/FLNS5D 2 (Leslie Controls, Inc. Dba Leslie Controls Inc), 17390N-2172IN-LNS-5D3/4IN (Leslie Controls, Inc. Dba Leslie Controls Inc), 21721N ITEM 5 (Leslie Controls, Inc. Dba Leslie Controls Inc), 17390N AND 2172 (Leslie Controls, Inc. Dba Leslie Controls Inc) and 2 more.

What NSN replaces 4820-01-119-1177?

There is 1 known substitute for 4820-01-119-1177: 4820-00-007-4595. Verify interchangeability with system specifications before substitution.

What are the specifications of Y303700511?

Key specifications for Y303700511: Valve Loading Method: SPRING; Outlet Pressure Range: 100.0 TO 450.0 CAMERA MOUNT; Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE; First End Raised Face Height: 0.062 INCHES NOMINAL IN. 24 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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