The Valve,pressure Regulator, cataloged under National Stock Number 4820-00-436-7162, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watson Mcdaniel Co. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-436-7162 |
| Primary Part Number | 500SS1-2IN |
| Item Name | Valve,pressure Regulator |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watson Mcdaniel Co |
| Status | ACTIVE |
| General Characteristics Item Description | CRES BODY,1/2 IN. VALVE SIZE,5 TO 35 PSI LOW PRESSURE RANGE 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 |
|---|---|
| S198 | Watson Mcdaniel Co (USA) |
| 500SS1-2IN PRIMARY | Watson Mcdaniel Co (USA) |
NSN 4820-00-436-7162 is a Valve,pressure Regulator, manufactured by Watson Mcdaniel Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-436-7162 has 2 manufacturer part numbers on file: S198 (Watson Mcdaniel Co), 500SS1-2IN (Watson Mcdaniel Co).
2 possible matches (shared part number, not a government interchangeability claim): 6640-00-765-4685, 5325-01-104-5756. Verify interchangeability with system specifications before substitution.
Key specifications for 500SS1-2IN: General Characteristics Item Description: CRES BODY,1/2 IN. VALVE SIZE,5 TO 35 PSI LOW PRESSURE RANGE 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.