The Valve,safety Relief, cataloged under National Stock Number 4820-00-019-0477, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Superior Air Products Co. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-019-0477 |
| Primary Part Number | A21701 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Superior Air Products Co |
| Status | ACTIVE |
| Valve Discharge Flow Rate | 35.0 CUBIC FEET PER MINUTE |
| Thread Series Designator | NPT FIRST END |
| Style Designator | STRAIGHT THRU |
| Reference Number Differentiating Characteristics | CLEANING IN ACCORDANCE WITH MIL-P-52211 /CE/ |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Material | COPPER ALLOY 836 BODY |
| Operating Pressure | 15.0 POUNDS PER SQUARE INCH (PSI) NOMINAL POWER DRIVE LBS |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | STEEL STEM |
| Valve Operation Method | AIR |
| Thread Direction | RIGHT-HAND FIRST END |
| Flow Control Device | DISK |
| Connection Style | PLAIN (PIPE) FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A21701 | Superior Air Products Co (USA) |
NSN 4820-00-019-0477 is a Valve,safety Relief, manufactured by Superior Air Products Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-019-0477 has 1 cross-referenced part number: A21701 (Superior Air Products Co).
There is 1 known substitute for 4820-00-019-0477: 5365-01-094-1988. Verify interchangeability with system specifications before substitution.
Key specifications for A21701: Valve Discharge Flow Rate: 35.0 CUBIC FEET PER MINUTE; Thread Series Designator: NPT FIRST END; Style Designator: STRAIGHT THRU; Reference Number Differentiating Characteristics: CLEANING IN ACCORDANCE WITH MIL-P-52211 /CE/. 13 total characteristics are documented in the Federal Logistics Information System.