MIL-DTL-7899: DIAPHRAGM,VALVE,FLAT.
The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER SEAT, connection_type: THREADED INTERNAL TUBE ALL ENDS, connection_style: FLARE (TUBE) ALL ENDS, style_designator: ANGLE, mounting_position: HORIZONTAL, surface_treatment: ANODIZE. This part is cataloged in the U.S.
Government catalog under NSN 4820-00-013-8904, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| material | RUBBER SEAT |
| connection_type | THREADED INTERNAL TUBE ALL ENDS |
| connection_style | FLARE (TUBE) ALL ENDS |
| style_designator | ANGLE |
| mounting_position | HORIZONTAL |
| surface_treatment | ANODIZE |
| disk_loading_method | SPRING |
| minimum_operating_temp | -67.0 FAHRENHEIT DEGF |
| valve_operation_method | AUTOMATIC |
| renewable_seat_ring_type | PRESSED-IN |
| part_name_assigned_by_controlling_agency | VALVE,CHECK, AIRCRAFT FUEL SYSTEM AND VALVE,FUEL CHECK, LOW PRESSURE FLARED TUBE CONNECTION |
| nominal_outside_diameter_tube_accommodated | 1.500 INCHES ALL ENDS IN |
| NSN | 4820-00-013-8904 |
| FLOW CONTROL DEVICE | DISK |
| CONNECTION STYLE | GASKET SEAL (BOSS) ALL ENDS |
| STYLE DESIGNATOR | STRAIGHT THRU |
| OPERATING PRESSURE | 60.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| THREAD DIRECTION | RIGHT-HAND ALL ENDS |
| NOMINAL THREAD SIZE | 2.500 INCHES ALL ENDS IN |
| MAXIMUM OPERATING TEMP | 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| DISK LOADING METHOD | SPRING |
| SURFACE TREATMENT | ANODIZE |
| MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |