The Valve,check, cataloged under National Stock Number 4820-00-203-3670, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crane Co Div Valve Div. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 19 commercial cross-references from 11 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 | 4820-00-203-3670 |
| Primary Part Number | 36-1IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Crane Co Div Valve Div |
| Status | CANCELLED |
| Style Designator | STRAIGHT THRU |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Nominal Thread Size | 1.000 INCHES ALL ENDS IN |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Material Document and Classification | ASTM B-16 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Thread Series Designator | NPT ALL ENDS |
| Material | COPPER ALLOY 922 BODY |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Material Document and Classification | ASTM B-16 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Nominal Thread Size | 1.000 INCHES ALL ENDS IN |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Style Designator | STRAIGHT THRU |
| Material | COPPER ALLOY 360 FLOW CONTROL DEVICE |
| Mounting Position | HORIZONTAL |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Flow Control Device | DISK |
| Material | COPPER ALLOY 922 BODY |
| Material Document and Classification | ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Thread Series Designator | NPT ALL ENDS |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Maximum Operating Temp | 550.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Valve Operation Method | AUTOMATIC |
| Material | COPPER ALLOY 360 FLOW CONTROL DEVICE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B-345-1 | Stockham Valves and Fittings Inc (USA) |
| B345 | Stockham Valves and Fittings Inc (USA) |
| 554 | Lunkenheimer Co (USA) |
| 36-1IN PRIMARY | Crane Co Div Valve Div (USA) |
| 554-1IN | Lunkenheimer Co (USA) |
| WW-V-51 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 236 | Lunkenheimer Co (USA) |
| 801 | Scott Valve Mfg Co (USA) |
| 560 | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 0605 SZ 1 IN PRIMARY | Fairbanks Co the (USA) |
| 254 | Kennedy Valve Div of Itt Grinnell Valve Co Inc (USA) |
| 0605 | Fairbanks Co the (USA) |
| B338 | Stockham Valves and Fittings Inc (USA) |
| 420 | The Walworth Company (USA) |
| BV1187-125 | Stockham Valves and Fittings Inc (USA) |
| 201 | Conbraco Industries Inc R-P and C Valve Div (USA) |
| 762A | Jenkins Bros (USA) |
| 544 | Lunkenheimer Co (USA) |
| 756 | Jenkins Bros (USA) |
NSN 4820-00-203-3670 is a Valve,check, manufactured by Crane Co Div Valve Div, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-203-3670 has 19 cross-referenced part numbers: B-345-1 (Stockham Valves and Fittings Inc), B345 (Stockham Valves and Fittings Inc), 554 (Lunkenheimer Co), 36-1IN (Crane Co Div Valve Div), 554-1IN (Lunkenheimer Co) and 14 more.
There are 12 known substitutes for 4820-00-203-3670: 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 36-1IN: Style Designator: STRAIGHT THRU; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Thread Direction: RIGHT-HAND ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 30 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-203-3670 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.