The Valve,check, cataloged under National Stock Number 4820-01-085-3347, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tyco Fire Products Lp. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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 | 4820-01-085-3347 |
| Primary Part Number | 27850 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Material | STEEL CORROSION RESISTING OVERALL |
| Nominal Thread Size | 1.875 INCHES FIRST END IN |
| Thread Series Designator | UN FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Connection Style | GASKET SEAL (BOSS) FIRST END |
| Connection Style | SOCKET (PIPE) SECOND END |
| Flow Control Device | BALL |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Maximum Operating Temp | 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Position | VERTICAL |
| Thread Quantity Per Inch | 12 FIRST END |
| Valve Operation Method | AUTOMATIC |
| Thread Direction | RIGHT-HAND FIRST END |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Outside Diameter Tube Accommodated | 1.500 INCHES SECOND END IN |
| Thread Class | 2B FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-085-3347 is a Valve,check, manufactured by Tyco Fire Products Lp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-085-3347 has 2 cross-referenced part numbers: 27850 (Grinnell Corp Grinnell Fire Protection Systmes Div), 27850 (Tyco Fire Products Lp).
There are 5 known substitutes for 4820-01-085-3347: 5306-00-151-0539, 3040-00-448-0893, 5305-00-465-2747 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 27850: Style Designator: STRAIGHT THRU; Media for Which Designed: WATER, FRESH SINGLE RESPONSE; Material: STEEL CORROSION RESISTING OVERALL; Nominal Thread Size: 1.875 INCHES FIRST END IN. 18 total characteristics are documented in the Federal Logistics Information System.