The Valve,stop-Check, cataloged under National Stock Number 4820-00-071-1871, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Strataflo Products, Inc. Government technical data includes 16 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 | 4820-00-071-1871 |
| Primary Part Number | 375-1-1-4 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Strataflo Products, Inc |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND FIRST END |
| Flow Control Device | POPPET |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | COPPER ALLOY SEAT |
| Material | RUBBER BUTADIENE-STYRENE CLASS SBR FLOW CONTROL DEVICE |
| Thread Series Designator | NPT FIRST END |
| Material | COPPER ALLOY STEM |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | NITROGEN, TETRAOXIDE SINGLE RESPONSE |
| Thread Quantity Per Inch | 11-1/2 FIRST END |
| Valve Operation Method | AUTOMATIC |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Material | COPPER ALLOY BODY |
| Nominal Pipe Size Accommodated | 1.250 INCHES FIRST END IN |
| Nominal Thread Size | 1.250 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 375-1-1-4 PRIMARY | Strataflo Products, Inc (USA) |
NSN 4820-00-071-1871 is a Valve,stop-Check, manufactured by Strataflo Products, Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-071-1871 has 1 cross-referenced part number: 375-1-1-4 (Strataflo Products, Inc).
There is 1 known substitute for 4820-00-071-1871: 4820-00-287-4447. Verify interchangeability with system specifications before substitution.
Key specifications for 375-1-1-4: Thread Direction: RIGHT-HAND FIRST END; Flow Control Device: POPPET; Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Material: COPPER ALLOY SEAT. 16 total characteristics are documented in the Federal Logistics Information System.