Operating Temp Rating: -50.0 FAHRENHEIT MINIMUM AND 200.0 FAHRENHEIT MAXIMUM DEGF
Opening Pressure Setting: ERR-060
Functional Description: DUCTILE IRON BODIED WITH BRAZED COPPER COUPLINGS ARE USED TO MODULATE THE FLOW OF REFRIGERANT GAS TO MAINTAINA NEARLY CONSTANT OUTLET PRESSURE AT THE SENSING POINT; PILOT OPERATED FOR CLOSE REGULATION; FEW SIZES COVER ENTIRE CAPACITY RANGE; EXTERNAL OR INTERNAL EQUALIZER; AVAILABLE WITH INTEGRAL ELECTRIC SHUT OFF; TIGHT SEATING; SIMPLE ADJUSTMENT; SWEAT END DESIGN SOLDERS INTO LINE WITHOUT DISASSEMBLY; CLEANABLE IN LINE; NOMINAL CAPACITIES 1.3 TO 24 TONS; 400 PSIG MAX RATED PRESSURE, MRP
Usage Design: HOT GAS
Identification
NSN: 4130-01-521-5873
NIIN: 015215873
FSC: 4130 — Refrigeration and Air Conditioning Components
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
General Description
The Regulator,air Conditioner, cataloged under National Stock Number 4130-01-521-5873, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) of the Refrigeration, AC, and Air Circulating Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Regulator,air Conditioner
FSC / FSG
4130 — Refrigeration and Air Conditioning Components (FSG 41)
Technical Specifications
Parameter
Value
NSN
4130-01-521-5873
Item Name
Regulator,air Conditioner
FSC / FSG
4130 / 41 — Refrigeration and Air Conditioning Components
Status
ACTIVE
Spring Operated Pressure Relief
PROVIDED
Mounting Method
HOSE
Operating Temp Rating
-50.0 FAHRENHEIT MINIMUM AND 200.0 FAHRENHEIT MAXIMUM DEGF
Opening Pressure Setting
ERR-060
Functional Description
DUCTILE IRON BODIED WITH BRAZED COPPER COUPLINGS ARE USED TO MODULATE THE FLOW OF REFRIGERANT GAS TO MAINTAINA NEARLY CONSTANT OUTLET PRESSURE AT THE SENSING POINT; PILOT OPERATED FOR CLOSE REGULATION; FEW SIZES COVER ENTIRE CAPACITY RANGE; EXTERNAL OR INTERNAL EQUALIZER; AVAILABLE WITH INTEGRAL ELECTRIC SHUT OFF; TIGHT SEATING; SIMPLE ADJUSTMENT; SWEAT END DESIGN SOLDERS INTO LINE WITHOUT DISASSEMBLY; CLEANABLE IN LINE; NOMINAL CAPACITIES 1.3 TO 24 TONS; 400 PSIG MAX RATED PRESSURE, MRP
Usage Design
HOT GAS
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
A9SE/220V50HZ
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4130 — Refrigeration and Air Conditioning Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4130-00-000-0147
FILTER MEDIA,AIR CONDITIONING
4130-00-000-0166
4130-00-000-0166 · Item name not on file
4130-00-001-6584
4130-00-001-6584 · Item name not on file
4130-00-001-7999
4130-00-001-7999 · Item name not on file
4130-00-001-8020
4130-00-001-8020 · Item name not on file
4130-00-001-9120
COMPRESSOR UNIT,REFRIGERATION
4130-00-001-9410
4130-00-001-9410 · Item name not on file
4130-00-001-9424
4130-00-001-9424 · Item name not on file
Frequently Asked Questions
What is NSN 4130-01-521-5873?
NSN 4130-01-521-5873 is a Regulator,air Conditioner, classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
What are the specifications of 4130-01-521-5873?
Key specifications for 4130-01-521-5873: Spring Operated Pressure Relief: PROVIDED; Mounting Method: HOSE; Operating Temp Rating: -50.0 FAHRENHEIT MINIMUM AND 200.0 FAHRENHEIT MAXIMUM DEGF; Opening Pressure Setting: ERR-060. 6 specifications are documented in the U.S. Government catalog.
Is NSN 4130-01-521-5873 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.