The Valve,check, cataloged under National Stock Number 4820-01-058-4993, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Swagelok Co. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-058-4993 |
| Primary Part Number | B-4C1-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) SECOND END |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flow Control Device | DISK |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Thread Class | 2A SECOND END A |
| Thread Series Designator | NPT FIRST END |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Material | COPPER ALLOY BODY |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Operating Pressure | 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Series Designator | UNF SECOND END |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Disk Loading Method | SPRING |
| Style Designator | STRAIGHT THRU |
| Furnished Items and Quantity | 1 FERRULE AND 1 NUT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B4C1 | Whitey Co (USA) |
| 4730 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 4820PL1253764 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 4730PC1 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| B-4C1-1 | Whitey Co (USA) |
| B-4C1-1 PRIMARY | Swagelok Co (USA) |
| 4730-1 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
NSN 4820-01-058-4993 is a Valve,check, manufactured by Swagelok Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-058-4993 has 7 cross-referenced part numbers: B4C1 (Whitey Co), 4730 (Howell Laboratories Inc Dba Howell Laboratories Inc), 4820PL1253764 (Jednolity Indeks Materialowy - Uniform Material Index), 4730PC1 (Howell Laboratories Inc Dba Howell Laboratories Inc), B-4C1-1 (Whitey Co) and 2 more.
There are 12 known substitutes for 4820-01-058-4993: 5315-00-209-8751, 5950-00-230-8217, 5905-00-236-6127 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for B-4C1-1: Connection Style: PLAIN (TUBE) SECOND END; Maximum Operating Temp: 300.0 FAHRENHEIT SINGLE RESPONSE DEGF; Flow Control Device: DISK; Thread Direction: RIGHT-HAND ALL ENDS. 22 total characteristics are documented in the Federal Logistics Information System.