The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-056-9540, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Arrow Pneumatics Inc. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-056-9540 |
| Primary Part Number | R374 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Arrow Pneumatics Inc |
| Status | ACTIVE |
| First End Connection Type | THREADED INTERNAL PIPE |
| Surface Treatment | PAINT OUTSIDE |
| Thread Size and Series/type Designator | 1/2-14 NPT FIRST END |
| Material | RUBBER OR RUBBER SYNTHETIC PACKING |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING STEM |
| Material | BRASS OR COPPER ALLOY SEAT |
| Valve Stem Design | SINGLE SEAT |
| Maximum Inlet Pressure Rating | ERR-060 |
| Renewable Seat Ring Type | PRESSED-IN |
| Body Style | STRAIGHT THRU |
| Mounting Facility | BRACKET |
| Second End Relationship with First End | IDENTICAL |
| Flow Control Device | PISTON, BOTTOM GUIDED |
| Temp Rating | -40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF |
| Valve Loading Method | BELLOWS AND SPRING |
| Outlet Pressure Setting | ERR-060 |
| First End Thread Direction | RIGHT-HAND |
| End Connection Quantity | 2 |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| Media for Which Designed | AIR |
| First End Style Designator | OPTIONAL END |
| Filter | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-056-9540 is a Valve,regulating,fluid Pressure, manufactured by Arrow Pneumatics Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-056-9540 has 2 cross-referenced part numbers: R374 (Arrow Pneumatics Inc), 1584 (Arrow Pneumatics Inc).
There are 11 known substitutes for 4820-01-056-9540: 6240-00-072-9966, 6510-00-105-5806, 5330-00-496-0066 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for R374: First End Connection Type: THREADED INTERNAL PIPE; Surface Treatment: PAINT OUTSIDE; Thread Size and Series/type Designator: 1/2-14 NPT FIRST END; Material: RUBBER OR RUBBER SYNTHETIC PACKING. 24 total characteristics are documented in the Federal Logistics Information System.