First End Flange Outside Diameter: 8.500 INCHES NOMINAL IN
First End Style Designator: PLAIN
Identification
NSN: 4530-00-001-7971
NIIN: 000017971
FSC: 4530 — Fuel Burning Equipment Units
FSG: 45 — Plumbing, Heating, and Waste Disposal
General Description
The Valve,regulating,fuel Oil, cataloged under National Stock Number 4530-00-001-7971, is classified within Federal Supply Class 4530 (Fuel Burning Equipment Units) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4530-00-001-7971
Item Name
Valve,regulating,fuel Oil
FSC / FSG
4530 / 45 — Fuel Burning Equipment Units
Status
ACTIVE
First End Bolt Hole Quantity
8
Flow Control Device
STEM AND INTEGRAL DISK
Second End Relationship with First End
IDENTICAL
Body Style
ANGLE
Regulation Type
MANUAL, DOUBLE STAGE
First End Flange Outside Diameter
8.500 INCHES NOMINAL IN
First End Style Designator
PLAIN
First Connection Face to Centerline Distance
7.250 INCHES NOMINAL IN
First End Bolt Hole Diameter
1.000 INCHES NOMINAL IN
First End Raised Face Diameter
3.625 INCHES NOMINAL IN
Material Document and Classification
ASTM A216, GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY
End Connection Quantity
2
Second Connection Face to Centerline Distance
7.250 INCHES NOMINAL IN
First End Flange Shape Style
ROUND W/ BOLT HOLES
First End Raised Face Height
0.250 INCHES NOMINAL IN
Material
STEEL CORROSION RESISTING FLOW CONTROL DEVICE
Material
STEEL CORROSION RESISTING SEAT
Material
STEEL UNS J03002 BODY
Material
STEEL CORROSION RESISTING STEM
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
⇄Related Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2940-00-029-0388485GB3191BPOSSIBLE MATCH
FILTER ELEMENT,FLUID
Possible match (shared part number)Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations
4130-00-066-11281791POSSIBLE MATCH
FILTER ELEMENT,AIR CONDITIONING
Possible match (shared part number)Supreme Supply Co Inc Dba Supreme Supply Co Inc
4935-00-167-894510175345POSSIBLE MATCH
CABLE ASSEMBLY,SPECIAL PURPOSE,E
Possible match (shared part number)Us Army Aviation and Missile Command
3610-00-288-28621791POSSIBLE MATCH
INKING PAD,DUPLICATING MACHINE
Possible match (shared part number)Abd Intl Inc Dba Abdick
5935-00-754-5770188326POSSIBLE MATCH
CONNECTOR,PLUG,ELECTRICAL
Possible match (shared part number)Raytheon Company
3120-00-857-24621791POSSIBLE MATCH
BEARING,SLEEVE
Possible match (shared part number)Parker-Hannifin Corporation Dba Control Systems Division
6685-01-350-1688179-1POSSIBLE MATCH
CONTROL,TEMPERATURE,INDICATING
Possible match (shared part number)Emerson Electric Co White Rodgers Co Div
6750-01-382-0491POSSIBLE MATCH
PAPER,PHOTOGRAPHIC
Possible match (shared part number)
5340-01-493-45961791POSSIBLE MATCH
BRACKET,MOUNTING
Possible match (shared part number)Perma Industries, Inc. Dba Perma-Cool
2940-01-513-15181R0739POSSIBLE MATCH
FILTER ELEMENT,FLUID
Possible match (shared part number)Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
30302
3/9Design control — primary reference
General Regulator Corp. Dba Accudriv
1791
5/9Secondary reference
General Regulator Corp. Dba Accudriv
Related Parts
2940-00-029-0388POSSIBLE MATCH
FILTER ELEMENT,FLUID
485GB3191B
4130-00-066-1128POSSIBLE MATCH
FILTER ELEMENT,AIR CONDITIONING
1791
4935-00-167-8945POSSIBLE MATCH
CABLE ASSEMBLY,SPECIAL PURPOSE,E
10175345
3610-00-288-2862POSSIBLE MATCH
INKING PAD,DUPLICATING MACHINE
1791
5935-00-754-5770POSSIBLE MATCH
CONNECTOR,PLUG,ELECTRICAL
188326
3120-00-857-2462POSSIBLE MATCH
BEARING,SLEEVE
1791
6685-01-350-1688POSSIBLE MATCH
CONTROL,TEMPERATURE,INDICATING
179-1
6750-01-382-0491POSSIBLE MATCH
PAPER,PHOTOGRAPHIC
5340-01-493-4596POSSIBLE MATCH
BRACKET,MOUNTING
1791
2940-01-513-1518POSSIBLE MATCH
FILTER ELEMENT,FLUID
1R0739
Frequently Asked Questions
What is NSN 4530-00-001-7971?
NSN 4530-00-001-7971 is a Valve,regulating,fuel Oil, classified under FSC 4530, Fuel Burning Equipment Units. Status: active.
What NSN replaces 4530-00-001-7971?
10 possible matches (shared part number, not a government interchangeability claim): 2940-00-029-0388, 4130-00-066-1128, 4935-00-167-8945. Verify interchangeability with system specifications before substitution.
What are the specifications of 4530-00-001-7971?
Key specifications for 4530-00-001-7971: First End Bolt Hole Quantity: 8; Flow Control Device: STEM AND INTEGRAL DISK; Second End Relationship with First End: IDENTICAL; Body Style: ANGLE. 19 specifications are documented in the U.S. Government catalog.
Is NSN 4530-00-001-7971 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.