The Diaphragm, cataloged under National Stock Number 4610-00-424-2770, is classified within Federal Supply Class 4610 (Water Purification Equipment) of the Water Purification and Sewage Treatment group. The manufacturer of record is Siemens Water Technologies Corp. Div Wallace & Tiernan Products. Government technical data includes 1 specification, 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. 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 | 4610-00-424-2770 |
| Primary Part Number | U4678 |
| Item Name | Diaphragm |
| FSC / FSG | 4610 / 46 — Water Purification Equipment |
| Manufacturer | Siemens Water Technologies Corp. Div Wallace & Tiernan Products |
| Status | ACTIVE |
| General Characteristics Item Description | BODY,BRASS;SURFACE,SYNTHETIC RUBBER;3.750 IN. OD;1.000 IN. O/A LG;THD INTERNALLY,3/8 IN.-24 UNF,2B,RH THD SIZE IN |
| 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 |
|---|---|
| U4678 PRIMARY | Siemens Water Technologies Corp. Div Wallace & Tiernan Products (USA) |
NSN 4610-00-424-2770 is a Diaphragm, manufactured by Siemens Water Technologies Corp. Div Wallace & Tiernan Products, classified under FSC 4610, Water Purification Equipment. Status: active.
NSN 4610-00-424-2770 has 1 manufacturer part number on file: U4678 (Siemens Water Technologies Corp. Div Wallace & Tiernan Products).
1 possible match (shared part number, not a government interchangeability claim): 4920-01-055-9428. Verify interchangeability with system specifications before substitution.
Key specifications for U4678: General Characteristics Item Description: BODY,BRASS;SURFACE,SYNTHETIC RUBBER;3.750 IN. OD;1.000 IN. O/A LG;THD INTERNALLY,3/8 IN.-24 UNF,2B,RH THD SIZE IN. 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.