The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-505-7718, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Metrex Valve Corp. Dba Metrex Valve Corp. Government technical data includes 6 specifications, 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 | 4820-01-505-7718 |
| Primary Part Number | M900PST-125FL9-2W |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Metrex Valve Corp. Dba Metrex Valve Corp |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| End Connection Quantity | 2 |
| Valve Loading Method | BELLOWS |
| Material | NICKEL ALLOY STEM |
| Material | NICKEL ALLOY AND COPPER ALLOY SEAT |
| 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 |
|---|---|
| M900P-1215FL-2W | Metrex Valve Corp. Dba Metrex Valve Corp (USA) |
| M900PST-125FL9-2W PRIMARY | Metrex Valve Corp. Dba Metrex Valve Corp (USA) |
NSN 4820-01-505-7718 is a Valve,regulating,fluid Pressure, manufactured by Metrex Valve Corp. Dba Metrex Valve Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-505-7718 has 2 manufacturer part numbers on file: M900P-1215FL-2W (Metrex Valve Corp. Dba Metrex Valve Corp), M900PST-125FL9-2W (Metrex Valve Corp. Dba Metrex Valve Corp).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-570-2299, 4820-01-622-5212. Verify interchangeability with system specifications before substitution.
Key specifications for M900PST-125FL9-2W: Flow Control Device: DIAPHRAGM; Regulation Type: AUTOMATIC SINGLE STAGE; End Connection Quantity: 2; Valve Loading Method: BELLOWS. 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.