The Valve,check, cataloged under National Stock Number 4820-00-200-0745, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hammond Valve Corp. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 19 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-200-0745 |
| Primary Part Number | WWV51 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Hammond Valve Corp |
| Status | CANCELLED |
| Thread Series Designator | NPT ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Disk Loading Method | SPRING |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Specification/standard Data | 59646-MSS AP-80 MANUFACTURERS STANDARD |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE |
| Thread Series Designator | NPT ALL ENDS |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 1.500 INCHES ALL ENDS IN |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Nondefinitive Spec/std Data | 200 CLASS AND NPT END AND 1-1/2IN. SIZE AND 3 TYPE IN |
| Material | COPPER ALLOY 836 SEAT |
| Specification/standard Data | 59646-MSS AP-80 MANUFACTURERS STANDARD |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE |
| Flow Control Device | DISK |
| Maximum Operating Temp | 100.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material | COPPER ALLOY 836 BODY |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| WWV51 | Hammond Valve Corp (USA) |
| MSS SP-80 | Manufacturers Standardization Society of the Valve and Fittings Industry Inc (USA) |
| B345 | Stockham Valves and Fittings Inc (USA) |
| 461H | Wolverine Brass Inc (USA) |
| IB949-1-1-2 | Hammond Valve Corp (USA) |
| 76E-1-1-2 | Crane Co Div Valve Div (USA) |
| 103 | Kennedy Valve Div of Itt Grinnell Valve Co Inc (USA) |
| 420 | Walworth Co Marine Div (USA) |
| WWV51 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 36 | Crane Co Div Valve Div (USA) |
| 3412 1 1/2IN | The Walworth Company (USA) |
| T-413-Y 1 1-2IN FPT | Nibco Inc (USA) |
| EA15919 | Crane Co Div Valve Div (USA) |
| UA-011490-99-1. | Crane Co Div Valve Div (USA) |
| UA-011490-99-1-50 IN | Tyco Fire Products Lp (USA) |
| 4812-12 | Tyco Fire Products Lp (USA) |
| 510A2236 ITEM 3 | Tyco Fire Products Lp (USA) |
| WW-V-51E | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 801 | Scott Valve Mfg Co (USA) |
NSN 4820-00-200-0745 is a Valve,check, manufactured by Hammond Valve Corp, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-200-0745 has 19 cross-referenced part numbers: WWV51 (Hammond Valve Corp), MSS SP-80 (Manufacturers Standardization Society of the Valve and Fittings Industry Inc), B345 (Stockham Valves and Fittings Inc), 461H (Wolverine Brass Inc), IB949-1-1-2 (Hammond Valve Corp) and 14 more.
There are 6 known substitutes for 4820-00-200-0745: 4820-00-203-3670, 4820-00-288-7066, 4820-00-446-3505 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for WWV51: Thread Series Designator: NPT ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Thread Direction: RIGHT-HAND ALL ENDS; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS. 30 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-200-0745 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.