The Wye,quick Disconnect, cataloged under National Stock Number 4730-00-705-9556, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-705-9556 |
| Item Name | Wye,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Material | UNABLE TO DECODE |
| 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 |
|---|---|
| 319BB-4 | 5/9 Secondary reference U.S. Government activity |
| 319BB-4 | 5/1 Secondary reference Dover Fluid Management, Inc. Div Dover Resources Inc. |
| SK106-1293E | 5/9 Secondary reference U.S. Government activity |
| 319B4AL | 5/9 Secondary reference U.S. Government activity |
| 319B4IN | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 319B4 | 5/9 Secondary reference U.S. Government activity |
| 319B4IN | 5/9 Secondary reference U.S. Government activity |
| 319BB-4 | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 319B-4 | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 77C5208A0024 | 3/2 Design control — primary reference U.S. Government activity |
| MCD4119-2 | 5/9 Secondary reference U.S. Government activity |
| C35219 | 5/1 Secondary reference Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| 319B-4 | 5/9 Secondary reference Pride Cast Metals, Inc. |
| 319B4IN | 5/9 Secondary reference Pride Cast Metals, Inc. |
NSN 4730-00-705-9556 is a Wye,quick Disconnect, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-322-6643. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-705-9556: Special Features: MALE END 4 IN. HOSE SIZE TWO OUTLET FEMALE ENDS 4 IN. HOSE SIZE IN; Part Name Assigned by Controlling Agency: WYE CONNECTION ASSEMBLY, ACC; Material: UNABLE TO DECODE. 1 specification is 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.