The Valve,check, cataloged under National Stock Number 4820-01-375-1283, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tyco Intl Ltd. Government technical data includes 14 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-375-1283 |
| Primary Part Number | 3300-3/4 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Tyco Intl Ltd |
| Status | ACTIVE |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Style Designator | STRAIGHT THRU |
| Nominal Pipe Size Accommodated | 0.750 INCHES ALL ENDS IN |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Supplementary Features | FLOW CONTROL DEVICE: PLUG |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Material | COPPER ALLOY BODY |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3300-3/4 | Tyco Intl Ltd (USA) |
| 3300 3/4 INCH | Grinnell Corp Grinnell Supply Sales Div Sub of Tyco Laboratories Inc (USA) |
NSN 4820-01-375-1283 is a Valve,check, manufactured by Tyco Intl Ltd, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-375-1283 has 2 cross-referenced part numbers: 3300-3/4 (Tyco Intl Ltd), 3300 3/4 INCH (Grinnell Corp Grinnell Supply Sales Div Sub of Tyco Laboratories Inc).
There are 2 known substitutes for 4820-01-375-1283: 4730-00-289-9441, 4730-01-235-1397. Verify interchangeability with system specifications before substitution.
Key specifications for 3300-3/4: Material Document and Classification: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE SEAT; Material: COPPER ALLOY FLOW CONTROL DEVICE; Material Document and Classification: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE; Style Designator: STRAIGHT THRU. 15 total characteristics are documented in the Federal Logistics Information System.