The Valve,safety Relief, cataloged under National Stock Number 4820-01-280-3951, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co.. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-280-3951 |
| Primary Part Number | VSF-5R |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co. |
| Status | ACTIVE |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Valve Size | 1.000 INCHES IN |
| Raised Face Nominal Height | 0.062 INCHES ALL ENDS IN |
| Material | STEEL BODY |
| Raised Face Nominal Diameter | 2.000 INCHES ALL ENDS IN |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flow Control Device | PISTON |
| Disk Loading Method | SPRING |
| Adjustable Pressure Range | +30.0 TO 100.0 POUNDS PER SQUARE INCH LBS |
| First Connection Face to Centerline Distance | 3.500 INCHES IN |
| Bolt Circle Nominal Diameter | 3.500 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC |
| Connection Type | FLANGE ALL ENDS |
| Nominal Outside Diameter | 4.875 INCHES ALL ENDS IN |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Quantity | 4 ALL ENDS |
| Nominal Thickness | 0.688 INCHES ALL ENDS IN |
| Second Connection Face to Centerline Distance | 3.500 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| VSF-5R | Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co. (USA) |
| V-2273 | Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co. (USA) |
| VSF-5RWS | Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co. (USA) |
| VSF-5R-HS-WS | Airline Hydraulics Corp Dba Airline Hydraulics Corp (USA) |
NSN 4820-01-280-3951 is a Valve,safety Relief, manufactured by Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co., classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-280-3951 has 4 cross-referenced part numbers: VSF-5R (Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co.), V-2273 (Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co.), VSF-5RWS (Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co.), VSF-5R-HS-WS (Airline Hydraulics Corp Dba Airline Hydraulics Corp).
There is 1 known substitute for 4820-01-280-3951: 2815-00-910-5287. Verify interchangeability with system specifications before substitution.
Key specifications for VSF-5R: Flange Face Design: RAISED STRAIGHT ALL ENDS; Valve Size: 1.000 INCHES IN; Raised Face Nominal Height: 0.062 INCHES ALL ENDS IN; Material: STEEL BODY. 19 total characteristics are documented in the Federal Logistics Information System.