The Valve,gate, cataloged under National Stock Number 4820-01-433-2649, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Anvil Products Inc Longview Div. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-433-2649 |
| Primary Part Number | 821-1 IN. SW |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Anvil Products Inc Longview Div |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDWHEEL |
| Inlet Relationship with Outlet | IDENTICAL |
| Nominal Pipe Size Accommodated | 1.000 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 1100.0 FAHRENHEIT WATER DEGF |
| Operating Pressure and Type | 800.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Stem Type | RISING |
| Connection Type | SOCKET, WELD, PIPE |
| Valve Size | 1.000 INCHES IN |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Bonnet Attachment Method | BOLTED |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| Material | STEEL CORROSION RESISTING DISK |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 821-1 IN. SW PRIMARY | Anvil Products Inc Longview Div (USA) |
| Reference | Meaning |
|---|---|
| 821-1 IN. SW | 5/9 Secondary reference Grinnell Fire Protection Systems Co |
| 821-1IN | C/1 Advisory reference — outside the item-of-supply concept Anvil Products Inc Sales Dept |
NSN 4820-01-433-2649 is a Valve,gate, manufactured by Anvil Products Inc Longview Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-433-2649 has 1 manufacturer part number on file: 821-1 IN. SW (Anvil Products Inc Longview Div).
Key specifications for 821-1 IN. SW: Furnished Items and Quantity: 1 HANDWHEEL; Inlet Relationship with Outlet: IDENTICAL; Nominal Pipe Size Accommodated: 1.000 INCHES IN; Maximum Operating Temp and Media for Which Designed: 1100.0 FAHRENHEIT WATER DEGF. 15 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.