ASAP Semiconductor is an industry-leading distributor for shopping for parts by National Stock Number (NSN) data, the items featured within this catalog all falling under NSN 4820-01-539-5294 (4820015395294). Toward the top of this page, you will find several details that pertain to this NSN, allowing you to confirm various aspects of these offerings to ensure accurate procurement. Meanwhile, the part numbers that we have available for purchase can be found below, with Request for Quote (RFQ) links provided alongside each should you wish to make a purchase. Our team is also available by phone or email to support you during the procurement process, so never hesitate to take the first step with us.
| Alternative NSN: | 4820015395294 | 
| Manufacturers | Watts Regulator Co Cleveland | 
| Item Name | Valve Check | 
| INC Code | 05487 | 
| Federal Supply Group (FSG) | 48 Valves | 
| Federal Supply Class (FSC) | 4820 Valves Nonpowered | 
| National Item Identification Number (NIIN) | 01-539-5294 (015395294) | 
| NCB Code | USA (01) | 
| MRC | Criteria | Characteristic | 
|---|---|---|
| MATT | Material | RUBBER SEAT | 
| MEDA | Media For Which Designed | WATER-OIL-GAS SINGLE RESPONSE | 
| CQGM | Maximum Operating Pressure | 175.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | 
| STYL | Style Designator | CROSS | 
| CXCY | Part Name Assigned By Controlling Agency | DUAL CHECK VALVE WITH INTERMEDIATE ATMOSPHERIC VENT | 
| FEAT | Special Features | ALL END CONNECTIONS: 3/4" UNION END SOLDER CONNECTIONS; MINIMUM REQUIRED PRESSURE: 25.0 PSI; INAVY: BACKFLOW PREVENTER VALVE | 
| AEHZ | Maximum Operating Temp | 250.0 DEG FAHRENHEIT SINGLE RESPONSE | 
| TMQY | Furnished Items And Quantity | 1 STRAINER | 
| MATT | Material | COPPER ALLOY BODY | 
| AQLR | Valve Operation Method | AUTOMATIC | 
| MRC | Decoded Requirement | Clear Text Reply | 
| BBJX | Mounting Position | HORIZONTAL OR VERTICAL | 
| ADQU | Flow Control Device | DISK | 
| MATT | Material | RUBBER FLOW CONTROL DEVICE | 
| ADSU | Disk Loading Method | SPRING | 
| 4810-01-103-6098 (4810011036098) | 4820-01-334-0599 (4820013340599) | 4820-01-537-2778 (4820015372778) | 4820-01-510-0543 (4820015100543) | 
| 4820-01-354-1657 (4820013541657) | 4820-01-338-6230 (4820013386230) | 4820-00-417-5424 (4820004175424) | 4820-01-223-5119 (4820012235119) | 
| 4820-00-626-7481 (4820006267481) | 4820-01-352-3713 (4820013523713) | 4820-00-055-6778 (4820000556778) | 4820-01-240-3067 (4820012403067) | 
We hope that you will visit us again the next time you need board-level components, aviation and aerospace parts, and more. Allow us to serve as your strategic purchasing partner.
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