The Valve,check, cataloged under National Stock Number 4820-00-796-4928, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mission Systems Orchard Park Inc. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-796-4928 |
| Primary Part Number | 21136-3 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Mission Systems Orchard Park Inc |
| Status | CANCELLED |
| Thread Class | 3A OVERALL A |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Thread Class | 3A FIRST END A |
| Nominal Outside Diameter Tube Accommodated | 0.312 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Media for Which Designed | OXYGEN, LIQUID OVERALL |
| Thread Direction | RIGHT-HAND SECOND END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Quantity Per Inch | 20 FIRST END |
| Thread Quantity Per Inch | 20 OVERALL |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Flow Control Device | POPPET |
| Nominal Thread Size | 0.125 INCHES SECOND END IN |
| Media for Which Designed | OXYGEN, LIQUID SINGLE RESPONSE |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 0.312 INCHES OVERALL IN |
| Thread Series Designator | UNF FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Thread Series Designator | ANPT SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21136-3 | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
| 21136-1 | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
| 21136-3 PRIMARY | Mission Systems Orchard Park Inc (USA) |
| 20C-0006-1 | Essex Industries Inc Div Manufacturing Division (USA) |
| 20C-0006-1 | Essex Industries, Inc. Dba Essex Industries (USA) |
| 5075 | American Safety Flight Systems Inc (USA) |
NSN 4820-00-796-4928 is a Valve,check, manufactured by Mission Systems Orchard Park Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-796-4928 has 6 cross-referenced part numbers: 21136-3 (Ingersoll-Rand Company Dba Ingersoll-Rand), 21136-1 (Ingersoll-Rand Company Dba Ingersoll-Rand), 21136-3 (Mission Systems Orchard Park Inc), 20C-0006-1 (Essex Industries Inc Div Manufacturing Division), 20C-0006-1 (Essex Industries, Inc. Dba Essex Industries) and 1 more.
There are 3 known substitutes for 4820-00-796-4928: 6550-01-056-8047, 5945-01-144-6485, 5995-01-444-5858. Verify interchangeability with system specifications before substitution.
Key specifications for 21136-3: Thread Class: 3A OVERALL A; Nominal Thread Size: 0.500 INCHES FIRST END IN; Thread Class: 3A FIRST END A; Nominal Outside Diameter Tube Accommodated: 0.312 INCHES FIRST END IN. 25 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-796-4928 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.