The Valve,check, cataloged under National Stock Number 4820-00-446-3505, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Kennedy Valve Div of Itt Grinnell Valve Co Inc. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 24 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-446-3505 |
| Primary Part Number | 254 1-1/4IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Kennedy Valve Div of Itt Grinnell Valve Co Inc |
| Status | CANCELLED |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Minimum Operating Temp | -20.0 FAHRENHEIT DEGF |
| Material | COPPER ALLOY 922 FLOW CONTROL DEVICE |
| Thread Series Designator | NPTF ALL ENDS |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Material | COPPER ALLOY 922 BODY |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTMCUB000 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Nominal Thread Size | 1.250 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Furnished Items and Quantity | 1 CAP |
| Maximum Operating Temp | 550.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Flow Control Device | DISK |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 420 | The Walworth Company (USA) |
| B345 | Stockham Valves and Fittings Inc (USA) |
| 762A | Jenkins Bros (USA) |
| 254 1-1/4IN PRIMARY | Kennedy Valve Div of Itt Grinnell Valve Co Inc (USA) |
| ENF35PC121 | Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div (USA) |
| SF137-1-1 1-4 | Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div (USA) |
| 0605 | Fairbanks Co the (USA) |
| 554 | Lunkenheimer Co (USA) |
| END35PC121 | Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div (USA) |
| 560Y 1-1/4IN PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 236 | Lunkenheimer Co (USA) |
| ENJ35PC121 | Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div (USA) |
| 554Y 1-1/4IN | Lunkenheimer Co (USA) |
| FIG 762-A SIZE 1 1/4 IN | Jenkins Bros (USA) |
| 420 1-1/4IN | Pebx Inc (USA) |
| 201Y 1-1/4IN | Conbraco Industries Inc R-P and C Valve Div (USA) |
| 0605 SZ 1 1/4 IN PRIMARY | Fairbanks Co the (USA) |
| 560 | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 801 | Scott Valve Mfg Co (USA) |
| B-345 1-1/4IN PRIMARY | Stockham Valves and Fittings Inc (USA) |
NSN 4820-00-446-3505 is a Valve,check, manufactured by Kennedy Valve Div of Itt Grinnell Valve Co Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-446-3505 has 24 cross-referenced part numbers: 420 (The Walworth Company), B345 (Stockham Valves and Fittings Inc), 762A (Jenkins Bros), 254 1-1/4IN (Kennedy Valve Div of Itt Grinnell Valve Co Inc), ENF35PC121 (Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div) and 19 more.
There are 12 known substitutes for 4820-00-446-3505: 5905-00-100-4912, 5910-00-112-7002, 3110-00-144-8988 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 254 1-1/4IN: Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Minimum Operating Temp: -20.0 FAHRENHEIT DEGF; Material: COPPER ALLOY 922 FLOW CONTROL DEVICE; Thread Series Designator: NPTF ALL ENDS. 21 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-446-3505 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.