The Valve,safety Relief, cataloged under National Stock Number 4820-01-220-5575, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 28 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-220-5575 |
| Primary Part Number | C3339 4IN90T140PSI PL4198 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Bolt Circle Nominal Diameter | 9.500 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 7.500 INCHES SECOND END IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.750 INCHES SECOND END IN |
| Bolt Hole Nominal Diameter | 0.875 INCHES FIRST END IN |
| Valve Size | 4.000 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Second Connection Face to Centerline Distance | 6.250 INCHES IN |
| Nominal Outside Diameter | 11.000 INCHES FIRST END IN |
| Nominal Outside Diameter | 9.000 INCHES SECOND END IN |
| Bolt Hole Quantity | 8 ALL ENDS |
| Bonnet Attachment Method | BOLTED |
| First Connection Face to Centerline Distance | 6.250 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL COMP 303 STEM |
| Material | STEEL COMP 303 SEAT |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE |
| Raised Face Nominal Diameter | 6.188 INCHES SECOND END IN |
| Raised Face Nominal Diameter | 8.500 INCHES FIRST END IN |
| Opening Pressure Setting | 300.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Height | 0.062 INCHES ALL ENDS IN |
| Nominal Thickness | 0.688 INCHES SECOND END IN |
| Nominal Thickness | 0.812 INCHES FIRST END IN |
| 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 |
|---|---|
| C3339 4IN90T140PSI PL4198 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| S1384 4IN90T140 | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-01-220-5575 is a Valve,safety Relief, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-220-5575 has 1 manufacturer part number on file: C3339 4IN90T140PSI PL4198 (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for C3339 4IN90T140PSI PL4198: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Bolt Circle Nominal Diameter: 9.500 INCHES FIRST END IN. 28 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.