The Valve,safety Relief, cataloged under National Stock Number 4820-01-011-6156, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-011-6156 |
| Primary Part Number | 6507 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Thread Class | 3A ALL ENDS A |
| Bonnet Type | INSIDE SPRING |
| Flow Control Device | POPPET |
| Disk Loading Method | SPRING |
| Adjustable Pressure Range | +10.0 TO 50.0 POUNDS PER SQUARE INCH LBS |
| Material Document and Classification | QQ-B-626,ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Material | RUBBER SYNTHETIC SEAT |
| Media for Which Designed | AIR FIRST RESPONSE |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Material | COPPER ALLOY BODY |
| Operating Pressure | 50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Material | STEEL COMP 303 FLOW CONTROL DEVICE |
| Opening Pressure Setting | 35.0 POUNDS PER SQUARE INCH LBS |
| Maximum Operating Temp | 225.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Bonnet Attachment Method | THREADED |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Style Designator | ANGLE |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Material Document and Classification | FED STD 66,AISI 303/SAE 30303 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 6507 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 6507 | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA) |
| 639XB2-4-2 | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA) |
NSN 4820-01-011-6156 is a Valve,safety Relief, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-011-6156 has 3 cross-referenced part numbers: 6507 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 6507 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 639XB2-4-2 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit).
There are 10 known substitutes for 4820-01-011-6156: 3455-00-232-4100, 5930-00-258-5289, 2815-00-682-7636 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 6507: Thread Class: 3A ALL ENDS A; Bonnet Type: INSIDE SPRING; Flow Control Device: POPPET; Disk Loading Method: SPRING. 25 total characteristics are documented in the Federal Logistics Information System.