The Valve,diaphragm,stop, cataloged under National Stock Number 4820-01-176-1858, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nibco Inc Chemtrol Div. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-176-1858 |
| Primary Part Number | G51CD-E 3/4INCH |
| Item Name | Valve,diaphragm,stop |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nibco Inc Chemtrol Div |
| Status | ACTIVE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| G51CD-E 3/4INCH PRIMARY | Nibco Inc Chemtrol Div (USA) |
| Reference | Meaning |
|---|---|
| 22153008 | 5/9 Secondary reference Nibco Inc |
| 22444008SXT AND 05025008 | 5/9 Secondary reference Nibco Inc |
| G51CD-E 3/4INCH | 3/9 Design control — primary reference Nibco Inc |
NSN 4820-01-176-1858 is a Valve,diaphragm,stop, manufactured by Nibco Inc Chemtrol Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-176-1858 has 1 manufacturer part number on file: G51CD-E 3/4INCH (Nibco Inc Chemtrol Div).
Key specifications for G51CD-E 3/4INCH: Connection Style: PLAIN,OPTIONAL END(PIPE) FIRST END; Style Designator: STRAIGHT THRU; Thread Direction: RIGHT-HAND FIRST END; Nominal Thread Size: 0.750 INCHES FIRST END IN. 6 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.