The Valve,regulating,fuel Oil, cataloged under National Stock Number 4530-00-355-5030, is classified within Federal Supply Class 4530 (Fuel Burning Equipment Units) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Automatic Timing & Controls, Inc Dba Automatic Timing & Controls Co, Inc Div Automatic Timing and Controls, Inc. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4530-00-355-5030 |
| Primary Part Number | HDVF51-1 1-4 750 |
| Item Name | Valve,regulating,fuel Oil |
| FSC / FSG | 4530 / 45 — Fuel Burning Equipment Units |
| Manufacturer | Automatic Timing & Controls, Inc Dba Automatic Timing & Controls Co, Inc Div Automatic Timing and Controls, Inc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 5 |
| Flow Control Device | DISK, CIRCULAR AND PISTON, SPRING LOADED |
| Pressure Rating | 300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AND 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM BYPASS INLET LBS |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 8.750 INCHES NOMINAL IN |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Flange Thickness | 0.625 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 5.375 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| Temp Rating | 150.0 FAHRENHEIT MAXIMUM DEGF |
| First End Bolt Hole Diameter | 0.688 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 4.062 INCHES NOMINAL IN |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | MIL-S-15083, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | MIL-S-15083, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | MIL-S-15083, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE STEM |
| End Connection Quantity | 2 |
| Manual Control Method | LEVER |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Bypass Flow Rate | 3000.0 POUNDS PER HOUR LBS |
| Material | STEEL UNS J03008 BODY |
| Material | COPPER ALLOY 922 FLOW CONTROL DEVICE |
| Material | STEEL UNS J03008 SEAT |
| Material | STEEL UNS J03008 STEM |
| Furnished Items | DIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HDVF51-1 1-4 750 | Automatic Timing & Controls, Inc Dba Automatic Timing & Controls Co, Inc Div Automatic Timing and Controls, Inc (USA) |
| Reference | Meaning |
|---|---|
| S3421L2 | D/9 Drawing number reference only Automatic Timing and Controls Co Div of Sycon Corp |
| HDVF51 | 3/1 Design control — primary reference Automatic Timing & Controls, Inc Dba Automatic Timing & Controls Co, Inc Div Automatic Timing and Controls, Inc |
| HDVF51 | 5/9 Secondary reference Automatic Timing and Controls Co Div of Sycon Corp |
| HDVF51-1 1-4 750 | 5/9 Secondary reference Automatic Timing and Controls Co Div of Sycon Corp |
| BB61S55-01 | 5/2 Secondary reference U.S. Government activity |
NSN 4530-00-355-5030 is a Valve,regulating,fuel Oil, manufactured by Automatic Timing & Controls, Inc Dba Automatic Timing & Controls Co, Inc Div Automatic Timing and Controls, Inc, classified under FSC 4530, Fuel Burning Equipment Units. Status: active.
NSN 4530-00-355-5030 has 1 manufacturer part number on file: HDVF51-1 1-4 750 (Automatic Timing & Controls, Inc Dba Automatic Timing & Controls Co, Inc Div Automatic Timing and Controls, Inc).
Key specifications for HDVF51-1 1-4 750: First End Bolt Hole Quantity: 5; Flow Control Device: DISK, CIRCULAR AND PISTON, SPRING LOADED; Pressure Rating: 300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AND 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM BYPASS INLET LBS; Second End Relationship with First End: IDENTICAL. 27 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.