661A3: VALVE,REGULATING,FLUID PRESSURE.
VALVE,REGULATING,FLUID PRESSURE. Key specifications include material: RUBBER SYNTHETIC FLOW CONTROL DEVICE, temp_rating: -40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF, regulation_type: AUTOMATIC DOUBLE STAGE, special_features: INLET CONNECTIONS ARE 1/8 INCH - NPT; OUTLET CONNECTIONS ARE 1/4 INCH - NPT IN, mounting_facility: BRACKET, flow_control_device: DIAPHRAGM. This part is cataloged in the U.S.
Government catalog under NSN 4820-01-516-3990, 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 SYNTHETIC FLOW CONTROL DEVICE |
| temp_rating | -40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF |
| regulation_type | AUTOMATIC DOUBLE STAGE |
| special_features | INLET CONNECTIONS ARE 1/8 INCH - NPT; OUTLET CONNECTIONS ARE 1/4 INCH - NPT IN |
| mounting_facility | BRACKET |
| flow_control_device | DIAPHRAGM |
| valve_loading_method | SPRING |
| end_connection_quantity | 4 |
| end_item_identification | MAIN ENGINE LO CONTROLS 5-250-0-E NO.3 MN ENG RM |
| media_for_which_designed | AIR |
| maximum_inlet_pressure_rating | ERR-060 |
| part_name_assigned_by_controlling_agency | MODEL 661 AMPLIFYING RELAY WITH BIAS |
| NSN | 4820-01-516-3990 |
| FLOW CONTROL DEVICE | DIAPHRAGM |
| REGULATION TYPE | AUTOMATIC DOUBLE STAGE |
| TEMP RATING | -40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF |
| END CONNECTION QUANTITY | 4 |
| VALVE LOADING METHOD | SPRING |
| MOUNTING FACILITY | BRACKET |
| SPECIAL FEATURES | INLET CONNECTIONS ARE 1/8 INCH - NPT; OUTLET CONNECTIONS ARE 1/4 INCH - NPT IN |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | MODEL 661 AMPLIFYING RELAY WITH BIAS |
| END ITEM IDENTIFICATION | MAIN ENGINE LO CONTROLS 5-250-0-E NO.3 MN ENG RM |
| MATERIAL | RUBBER SYNTHETIC FLOW CONTROL DEVICE |