The Valve,check, cataloged under National Stock Number 4820-00-630-0026, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mark Controls Corp Pacific Valves Div. Government technical data includes 13 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-630-0026 |
| Primary Part Number | 13241 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Mark Controls Corp Pacific Valves Div |
| Status | ACTIVE |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Style | SOCKET (PIPE) FIRST END |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Material | COBALT ALLOY BODY LINING |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Material | STEEL COMP 8620 BODY |
| Operating Pressure | 2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Reference Number Differentiating Characteristics | SELECTED AND TESTED FOR NUCLEAR PROPULSION PLANT SYSTEMS |
| Criticality Code Justification | ZZZY |
| Style Designator | STRAIGHT THRU |
| Flow Control Device | DISK |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 13241 | Mark Controls Corp Pacific Valves Div (USA) |
| 13241-0 | Mark Controls Corp Pacific Valves Div (USA) |
| 13241PCALL | Mark Controls Corp Pacific Valves Div (USA) |
NSN 4820-00-630-0026 is a Valve,check, manufactured by Mark Controls Corp Pacific Valves Div, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-630-0026 has 3 cross-referenced part numbers: 13241 (Mark Controls Corp Pacific Valves Div), 13241-0 (Mark Controls Corp Pacific Valves Div), 13241PCALL (Mark Controls Corp Pacific Valves Div).
There are 11 known substitutes for 4820-00-630-0026: 5950-00-063-1925, 4730-00-186-9959, 5120-00-224-4051 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 13241: Connection Type: UNTHREADED INTERNAL TUBE FIRST END; Connection Style: SOCKET (PIPE) FIRST END; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Material: COBALT ALLOY BODY LINING. 13 total characteristics are documented in the Federal Logistics Information System.