The Valve,check, cataloged under National Stock Number 4820-01-136-6536, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Admiral Valve Llc Dba Cpv Manufacturing. Government technical data includes 19 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-136-6536 |
| Primary Part Number | 681-4-PL-0884-C |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Admiral Valve Llc Dba Cpv Manufacturing |
| Status | ACTIVE |
| Thread Series Designator | UN ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Thread Class | 2A ALL ENDS A |
| Mounting Position | HORIZONTAL |
| Flow Control Device | DISK |
| Maximum Operating Temp | 225.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL CORROSION RESISTING SEAT |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Connection Style | PLAIN (TUBE) ALL ENDS |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY BODY |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 2.000 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Style Designator | ANGLE |
| Renewable Seat Ring Type | PRESSED-IN |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 681-4 | Admiral Valve Llc Dba Cpv Manufacturing (USA) |
| 681-4-PL-0884-C PRIMARY | Admiral Valve Llc Dba Cpv Manufacturing (USA) |
| 67178-2 .75IPS | Admiral Valve Llc Dba Cpv Manufacturing (USA) |
NSN 4820-01-136-6536 is a Valve,check, manufactured by Admiral Valve Llc Dba Cpv Manufacturing, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-136-6536 has 3 cross-referenced part numbers: 681-4 (Admiral Valve Llc Dba Cpv Manufacturing), 681-4-PL-0884-C (Admiral Valve Llc Dba Cpv Manufacturing), 67178-2 .75IPS (Admiral Valve Llc Dba Cpv Manufacturing).
There are 12 known substitutes for 4820-01-136-6536: 8010-00-171-1518, 5305-00-206-9851, 5950-00-234-0364 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 681-4-PL-0884-C: Thread Series Designator: UN ALL ENDS; Valve Operation Method: AUTOMATIC; Thread Class: 2A ALL ENDS A; Mounting Position: HORIZONTAL. 19 total characteristics are documented in the Federal Logistics Information System.