The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-239-8934, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Gregory Engineering Corp. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-239-8934 |
| Primary Part Number | 31501 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Gregory Engineering Corp |
| Status | ACTIVE |
| Material | IRON CAST BODY |
| Second End Thread Direction | RIGHT-HAND |
| End Connection Quantity | 2 |
| Second End Connection Type | THREADED INTERNAL PIPE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Second End Nominal Pipe Size Accommodated | 0.500 INCHES IN |
| First End Connection Type | THREADED INTERNAL PIPE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 31501 | Gregory Engineering Corp (USA) |
NSN 4820-01-239-8934 is a Valve,relief,pressure and Temper, manufactured by Gregory Engineering Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-239-8934 has 1 cross-referenced part number: 31501 (Gregory Engineering Corp).
There are 5 known substitutes for 4820-01-239-8934: 5130-00-137-5132, 5110-00-166-1207, 5940-00-283-5280 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 31501: Special Features: PRESSURE PORT 0.500 IN. NPT INTERNAL THREADS; MAX PSI 1500 IN; Material: IRON CAST BODY; Second End Thread Direction: RIGHT-HAND; End Connection Quantity: 2. 10 total characteristics are documented in the Federal Logistics Information System.