The Valve,safety Relief, cataloged under National Stock Number 4820-01-050-9077, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dante Valve Company. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-050-9077 |
| Primary Part Number | D49-30UU-02 1/2 IN |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Valve Operation Method | AUTOMATIC |
| Adjustable Pressure Range | +551.0 TO 650.0 POUNDS PER SQUARE INCH LBS |
| Material Document and Classification | QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material | COPPER ALLOY BODY |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES FIRST END IN |
| Material Document and Classification | FED STD 66AISI 304/SAE 30304 FED STD SINGLE MATERIAL RESPONSE SEAT |
| Material | STEEL COMP 304 SEAT |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Style | STREAMLINED WITH TWO BRAZING RINGS (TUBE) SECOND END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Style Designator | ANGLE |
| Disk Loading Method | SPRING |
| Connection Style | SOCKET WITH BRAZING RING (TUBE) FIRST END |
| Operating Pressure | 650.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Flow Control Device | DISK |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES SECOND END IN |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material Document and Classification | QQ-S-764,TYPE 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material | STEEL COMP 303 FLOW CONTROL DEVICE |
| Maximum Operating Temp | 180.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| D49-30UU-02 1/2 IN | Danco Valve Company (USA) |
| 9523 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| 9523 551 T 650PSI | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| D49-30UU-02 1/2 IN PRIMARY | Dante Valve Company (USA) |
| 189-CS-167 551 T 650PSI PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
NSN 4820-01-050-9077 is a Valve,safety Relief, manufactured by Dante Valve Company, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-050-9077 has 5 cross-referenced part numbers: D49-30UU-02 1/2 IN (Danco Valve Company), 9523 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 9523 551 T 650PSI (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), D49-30UU-02 1/2 IN (Dante Valve Company), 189-CS-167 551 T 650PSI (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
There are 7 known substitutes for 4820-01-050-9077: 5120-00-180-0779, 6145-00-643-0463, 4820-00-905-5491 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for D49-30UU-02 1/2 IN: Valve Operation Method: AUTOMATIC; Adjustable Pressure Range: +551.0 TO 650.0 POUNDS PER SQUARE INCH LBS; Material Document and Classification: QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY; Material: COPPER ALLOY BODY. 20 total characteristics are documented in the Federal Logistics Information System.