The Valve,safety Relief, cataloged under National Stock Number 4820-01-235-3604, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-235-3604 |
| Primary Part Number | 23M1.50INFLGE150LB8T13PSI |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 3.875 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.625 INCHES ALL ENDS IN |
| Valve Size | 1.500 INCHES IN |
| Adjustable Pressure Range | +8.0 TO 13.0 POUNDS PER SQUARE INCH LBS |
| Maximum Operating Temp | 300.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | 406.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Second Connection Face to Centerline Distance | 4.125 INCHES IN |
| Nominal Outside Diameter | 5.000 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Media for Which Designed | STEAM SECOND RESPONSE |
| Media for Which Designed | AIR FIRST RESPONSE |
| First Connection Face to Centerline Distance | 4.125 INCHES IN |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL STEM |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.438 INCHES ALL ENDS 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 |
|---|---|
| 13389-0.150FLGE150LB88T13RG | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 23M1.50INFLGE150LB8T13PSI PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| Reference | Meaning |
|---|---|
| 13389-0.150FLGE150LB8T13RG | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 23M1.50IPS150LB | C/1 Advisory reference — outside the item-of-supply concept Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-235-3604 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-235-3604 has 2 manufacturer part numbers on file: 13389-0.150FLGE150LB88T13RG (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 23M1.50INFLGE150LB8T13PSI (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
Key specifications for 23M1.50INFLGE150LB8T13PSI: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 3.875 INCHES ALL ENDS IN. 21 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.