The Valve,check, cataloged under National Stock Number 4820-00-087-8451, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Nibco Inc. Government technical data includes 10 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-087-8451 |
| Primary Part Number | 785Y 1-1/2IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Nibco Inc |
| Status | CANCELLED |
| Disk Loading Method | SPRING |
| Valve Operation Method | AUTOMATIC |
| Material Document and Classification | QQ-C-390, ALLOY B5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Material | COPPER ALLOY 836 OVERALL |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 1.500 INCHES ALL ENDS IN |
| Connection Style | SOCKET (TUBE) ALL ENDS |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Operating Pressure | 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Flow Control Device | DISK |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 785Y 1-1/2IN | Nibco Inc (USA) |
| 2145 | Lunkenheimer Co (USA) |
NSN 4820-00-087-8451 is a Valve,check, manufactured by Nibco Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-087-8451 has 2 cross-referenced part numbers: 785Y 1-1/2IN (Nibco Inc), 2145 (Lunkenheimer Co).
There are 12 known substitutes for 4820-00-087-8451: 5325-00-079-7237, 9540-00-148-4299, 2920-00-361-8285 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 785Y 1-1/2IN: Disk Loading Method: SPRING; Valve Operation Method: AUTOMATIC; Material Document and Classification: QQ-C-390, ALLOY B5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: COPPER ALLOY 836 OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-087-8451 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.