The Valve,y, cataloged under National Stock Number 4820-00-446-3753, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-446-3753 |
| Item Name | Valve,y |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISKDISK |
| Renewable Seat Ring Type | THREADEDTHREADED |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU Y-PATTERN |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Features Provided | BONNET PACKINGBONNET PACKING |
| Bonnet Type | INSIDE SCREWINSIDE SCREW |
| Thread Direction | RIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.000 INCHES ALL ENDS1.000 INCHES ALL ENDS IN |
| Bonnet Attachment Method | UNIONUNION |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY STEM |
| Material | COPPER ALLOY STEMNICKEL ALLOY SEAT |
| Material | NICKEL ALLOY FLOW CONTROL DEVICECOPPER ALLOY BODY |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | MANUALMANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| R4729PC34 | 5/9 Secondary reference Ames Iron Works |
| C714PC34 | 5/9 Secondary reference Ames Iron Works |
| 150330IC224 | 3/9 Design control — primary reference Ames Iron Works |
| R4603PC34 | 5/9 Secondary reference Ames Iron Works |
| C347PC34 | 5/9 Secondary reference Ames Iron Works |
| R4512PC34 | 5/9 Secondary reference Ames Iron Works |
| C718PC34 | 5/9 Secondary reference Ames Iron Works |
| C882PC34 | 5/9 Secondary reference Ames Iron Works |
NSN 4820-00-446-3753 is a Valve,y, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-446-3753: Flow Control Device: DISKDISK; Renewable Seat Ring Type: THREADEDTHREADED; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS. 20 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.