The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-339-8511, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Imi Cash Valve Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-339-8511 |
| Primary Part Number | NCLX8-125 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Imi Cash Valve Inc |
| Status | ACTIVE |
| First End Thread Series Designator | NPT |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.750 INCHES IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| First End Style Designator | PLAIN |
| Second End Thread Series Designator | NPT |
| Second End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | PLAIN |
| Opening Pressure Setting | ERR-060 |
| Temp Control Device Type | THERMOSTATIC |
| First End Connection Type | THREADED INTERNAL PIPE |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Material | COPPER ALLOY BODY |
| Second End Connection Type | THREADED EXTERNAL PIPE |
| Furnished Items | TEST ATTACHMENT |
| First End Nominal Thread Size | 0.750 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-339-8511 is a Valve,relief,pressure and Temper, manufactured by Imi Cash Valve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-339-8511 has 2 manufacturer part numbers on file: NCLX8-125 (Imi Cash Valve Inc), NCLX8 (Imi Cash Valve Inc).
Key specifications for NCLX8-125: First End Thread Series Designator: NPT; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.750 INCHES IN; Second End Relationship with First End: NOT IDENTICAL. 19 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.