PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Y303700711Valve,regulating,fluid Pressure

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-128-2297 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-128-2297 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-128-2297. Primary manufacturer part number: Y303700711.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Regulation Type: AUTOMATIC SINGLE STAGE
  • Second End Relationship with First End: IDENTICAL
  • Filter: NOT INCLUDED
  • Material: STEEL BODY
  • Nondefinitive Spec/std Data: 1 TYPE AND A CLASS
  • Body Style: STRAIGHT THRU
  • First End Bolt Hole Quantity: 4
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Body construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-128-2297, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN4820-01-128-2297
Primary Part NumberY303700711
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Regulation TypeAUTOMATIC SINGLE STAGE
Second End Relationship with First EndIDENTICAL
FilterNOT INCLUDED
MaterialSTEEL BODY
Nondefinitive Spec/std Data1 TYPE AND A CLASS
Body StyleSTRAIGHT THRU
First End Bolt Hole Quantity4
Outlet Pressure Range35.0 TO 125.0 CAMERA MOUNT
Temp Rating500.0 FAHRENHEIT MAXIMUM DEGF
Flow Control DeviceDISK
First End Flange Thickness0.438 INCHES NOMINAL IN
Valve Loading MethodSPRING
First End Bolt Hole Diameter0.625 INCHES NOMINAL IN
First End Flange Shape StyleROUND W/ BOLT HOLES
First End Raised Face Height0.062 INCHES NOMINAL IN
Media for Which DesignedSTEAM
First End Flange Outside Diameter4.625 INCHES NOMINAL IN
Face to Face Distance7.875 INCHES NOMINAL IN
First End Bolt Circle Diameter3.500 INCHES NOMINAL IN
First End Connection TypeRAISED FACE FLANGE
End Connection Quantity2
First End Style DesignatorRAISED
First End Raised Face Diameter2.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-046-4617 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4310-00-306-1319N11122 INTERCHANGEABLE
Cylinder Sleeve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-433-5992 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-435-7991Y303700610 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-573-7612 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-862-4691 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-873-8948Y303700910 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-935-5359 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-943-4036 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-086-8455Y303701121 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
17390N/LNS5D 21259N 1 1-4IN Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
MIL-V-17848 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
17390N/LNS5D/1 1/4 IN Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
1 1/4 LNS5D-150 LB FLANGED Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
17390N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Y303700711 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4820-00-046-4617INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4310-00-306-1319INTERCHANGEABLE
CYLINDER SLEEVE
N11122
4820-00-433-5992INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-435-7991INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700610
4820-00-573-7612INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-862-4691INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-873-8948INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700910
4820-00-935-5359INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-943-4036INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-086-8455INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303701121
4820-01-103-3296INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
12397N, LNS5, 50 TO 150PSI
4820-01-111-0784INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700611

Frequently Asked Questions

What is NSN 4820-01-128-2297?

NSN 4820-01-128-2297 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 4820-01-128-2297?

NSN 4820-01-128-2297 has 6 cross-referenced part numbers: 17390N/LNS5D 21259N 1 1-4IN (Leslie Controls, Inc. Dba Leslie Controls Inc), MIL-V-17848 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 17390N/LNS5D/1 1/4 IN (Leslie Controls, Inc. Dba Leslie Controls Inc), 1 1/4 LNS5D-150 LB FLANGED (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 17390N (Leslie Controls, Inc. Dba Leslie Controls Inc) and 1 more.

What NSN replaces 4820-01-128-2297?

There are 12 known substitutes for 4820-01-128-2297: 4820-00-046-4617, 4310-00-306-1319, 4820-00-433-5992 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of Y303700711?

Key specifications for Y303700711: Regulation Type: AUTOMATIC SINGLE STAGE; Second End Relationship with First End: IDENTICAL; Filter: NOT INCLUDED; Material: STEEL BODY. 23 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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