The Valve,safety Relief, cataloged under National Stock Number 4820-00-273-9888, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Imi Cash Valve Inc. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-273-9888 |
| Primary Part Number | 01977-0105 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Imi Cash Valve Inc |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Material | COPPER ALLOY BODY |
| Thread Series Designator | NPT FIRST END |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Material | COPPER ALLOY SEAT |
| Bonnet Type | INSIDE SCREW |
| Disk Loading Method | SPRING |
| Style Designator | ANGLE |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Bonnet Attachment Method | THREADED |
| Opening Pressure Setting | 105.0 POUNDS PER SQUARE INCH LBS |
| Thread Series Designator | NPT SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Thread Direction | RIGHT-HAND SECOND END |
| Valve Operation Method | AUTOMATIC |
| Features Provided | VALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE |
| Flow Control Device | BALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1977 3/4 IN MC | Imi Cash Valve Inc (USA) |
| 01977-0105 PRIMARY | Imi Cash Valve Inc (USA) |
| MC | Imi Cash Valve Inc (USA) |
NSN 4820-00-273-9888 is a Valve,safety Relief, manufactured by Imi Cash Valve Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-273-9888 has 3 cross-referenced part numbers: 1977 3/4 IN MC (Imi Cash Valve Inc), 01977-0105 (Imi Cash Valve Inc), MC (Imi Cash Valve Inc).
There are 9 known substitutes for 4820-00-273-9888: 6350-00-042-9684, 3110-00-100-6147, 6625-00-133-4631 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 01977-0105: Connection Style: PLAIN (PIPE) SECOND END; Connection Type: THREADED INTERNAL PIPE FIRST END; Material: COPPER ALLOY BODY; Thread Series Designator: NPT FIRST END. 21 total characteristics are documented in the Federal Logistics Information System.