The Valve,safety Relief, cataloged under National Stock Number 4820-01-509-4945, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dante Valve Company. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-509-4945 |
| Primary Part Number | CASRN13SDD |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Furnished Items and Quantity | 1 LEVER |
| Flange Face Design | RAISED SWIVEL ALL ENDS |
| Connection Style | PLAIN (TUBE) ALL ENDS |
| Bolt Circle Nominal Diameter | 2.750 INCHES SECOND END IN |
| Bolt Circle Nominal Diameter | 3.250 INCHES FIRST END IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Material Document and Classification | ASTM A271 WCB ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A276, CRES/304 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM A276, CRES/304 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | ASTM A313, CRES/316 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Bolt Hole Nominal Diameter | 0.620 INCHES FIRST END IN |
| Bolt Hole Nominal Diameter | 0.500 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES ALL ENDS IN |
| Adjustable Pressure Range | +755.0 TO 1165.0 POUNDS PER SQUARE INCH LBS |
| Features Provided | PRESSURE TIGHT OUTLET SIDE |
| Bonnet Type | INSIDE SPRING |
| Specification/standard Data | 81349-MIL-V-24332 GOVERNMENT SPECIFICATION |
| Departure From Cited Document | MODIFIED BY FLANGE IAW ANSI B16.5; MODIFIED BY HARD SEAT AND DISK FOR O VER 400 PSI |
| Second Connection Face to Centerline Distance | 3.250 INCHES IN |
| Nondefinitive Spec/std Data | ADE B GRADE |
| Nominal Outside Diameter | 3.880 INCHES SECOND END IN |
| Nominal Outside Diameter | 4.620 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Mounting Facility | BRACKET(S) |
| Bolt Hole Quantity | 4 SECOND END |
| Bolt Hole Quantity | 4 FIRST END |
| 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 |
|---|---|
| CASRN13SDD PRIMARY | Dante Valve Company (USA) |
| D60-.75-0HS CASRN13SDD | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| MIL-DTL-24332 | 4/1 Identification reference U.S. Government activity |
| CASRN13SDD | 3/9 Design control — primary reference Danco Valve Company |
| MIL-V-24332 | 5/9 Secondary reference U.S. Government activity |
| D60-.75-0HS CASRN13SDD | 5/9 Secondary reference Danco Valve Company |
| D60-.75-0HS | D/9 Drawing number reference only Danco Valve Company |
NSN 4820-01-509-4945 is a Valve,safety Relief, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-509-4945 has 2 manufacturer part numbers on file: CASRN13SDD (Dante Valve Company), D60-.75-0HS CASRN13SDD (Dante Valve Company).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-514-6952. Verify interchangeability with system specifications before substitution.
Key specifications for CASRN13SDD: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Furnished Items and Quantity: 1 LEVER; Flange Face Design: RAISED SWIVEL ALL ENDS. 29 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.