The Valve,safety Relief,remote Contr, cataloged under National Stock Number 4820-00-148-8653, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Testek Llc Dba Testek Solutions. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-148-8653 |
| Primary Part Number | Q4783-188 |
| Item Name | Valve,safety Relief,remote Contr |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Testek Llc Dba Testek Solutions |
| Status | ACTIVE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +7.0 TO 350.0 BAR |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Mounting Facility | PANEL |
| Material | STEEL BODY |
| Thread Series Designator | NPTF ALL ENDS |
| Valve Discharge Flow Rate | 1.0 GALLONS PER MINUTE |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| Q4783-188 PRIMARY | Testek Llc Dba Testek Solutions (USA) |
| R1E02-2511A5 | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA) |
| REQ4-1513S5 | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division (USA) |
| Reference | Meaning |
|---|---|
| Q4783-188 | 5/9 Secondary reference Aai Corporation Div Mississippi Operations |
| RE04-1513S5 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division |
NSN 4820-00-148-8653 is a Valve,safety Relief,remote Contr, manufactured by Testek Llc Dba Testek Solutions, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-148-8653 has 3 manufacturer part numbers on file: Q4783-188 (Testek Llc Dba Testek Solutions), R1E02-2511A5 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division), REQ4-1513S5 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division).
Key specifications for Q4783-188: Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Style Designator: STRAIGHT THRU; Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Adjustable Pressure Range: +7.0 TO 350.0 BAR. 11 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.