The Valve,check, cataloged under National Stock Number 4820-00-287-5999, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Manufacturers Standardization Society of the Valve and Fittings Industry Inc. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 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 | 4820-00-287-5999 |
| Primary Part Number | MSS SP80 TY1,CL125,SZ3/4IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Manufacturers Standardization Society of the Valve and Fittings Industry Inc |
| Status | CANCELLED |
| Flow Control Device | DISK |
| Maximum Operating Temp | 406.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Thread Quantity Per Inch | 14 ALL ENDS |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B-16 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Material | COPPER ALLOY 836 BODY |
| Material | COPPER ALLOY 360 FLOW CONTROL DEVICE |
| Operating Pressure | 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Thread Series Designator | NPT ALL ENDS |
| Mounting Position | HORIZONTAL |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20 3-4 | Crane Co Div Valve Div (USA) |
| 2142 | Lunkenheimer Co (USA) |
| 901-3/4IN. | Hammond Valve Corp (USA) |
| B316 | Stockham Valves and Fittings Inc (USA) |
| FIG 2142 SZ 3/4 IN | Lunkenheimer Co (USA) |
| 237 | Lunkenheimer Co (USA) |
| MSS SP80 | Manufacturers Standardization Society of the Valve and Fittings Industry Inc (USA) |
| 0607 | Fairbanks Co the (USA) |
| 544-3-4 | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| WW-V-51 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 7108-3020 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 133 | Kennedy Valve Div of Itt Grinnell Valve Co Inc (USA) |
| MSS SP80 TY1,CL125,SZ3/4IN PRIMARY | Manufacturers Standardization Society of the Valve and Fittings Industry Inc (USA) |
| 52116 | Scott Valve Mfg Co (USA) |
| 106107-6 | Uniflite Inc (USA) |
| 106107-6 | Sea Cure Technology, Inc (USA) |
NSN 4820-00-287-5999 is a Valve,check, manufactured by Manufacturers Standardization Society of the Valve and Fittings Industry Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-287-5999 has 16 cross-referenced part numbers: 20 3-4 (Crane Co Div Valve Div), 2142 (Lunkenheimer Co), 901-3/4IN. (Hammond Valve Corp), B316 (Stockham Valves and Fittings Inc), FIG 2142 SZ 3/4 IN (Lunkenheimer Co) and 11 more.
There are 12 known substitutes for 4820-00-287-5999: 5310-00-015-0013, 5330-00-038-8900, 2940-00-192-9182 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for MSS SP80 TY1,CL125,SZ3/4IN: Flow Control Device: DISK; Maximum Operating Temp: 406.0 FAHRENHEIT FIRST RESPONSE DEGF; Thread Quantity Per Inch: 14 ALL ENDS; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS. 21 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-287-5999 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.