The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-250-7178, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-250-7178 |
| Primary Part Number | 40555 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Second End Relationship with First End | IDENTICAL |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Flange Outside Diameter | 3.500 INCHES NOMINAL IN |
| Body Style | STRAIGHT THRU |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Material | NICKEL ALLOY STEM |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Flow Control Device | DISK |
| End Connection Quantity | 2 |
| Filter | NOT INCLUDED |
| First End Bolt Hole Quantity | 4 |
| Valve Loading Method | SPRING |
| First End Style Designator | PLAIN |
| First End Bolt Hole Diameter | 0.625 INCHES NOMINAL IN |
| Manual Control Method | WHEEL |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Thickness | 0.312 INCHES NOMINAL IN |
| Material | NICKEL ALLOY AND COPPER ALLOY SEAT |
| Media for Which Designed | WATER, FRESH |
| Face to Face Distance | 6.562 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 2.375 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 40555 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
NSN 4820-01-250-7178 is a Valve,regulating,fluid Pressure, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-250-7178 has 1 cross-referenced part number: 40555 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
There are 8 known substitutes for 4820-01-250-7178: 5961-00-077-2119, 5330-00-385-3223, 5950-00-438-6707 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 40555: First End Flange Shape Style: ROUND W/ BOLT HOLES; Second End Relationship with First End: IDENTICAL; Regulation Type: MANUAL SINGLE STAGE; First End Flange Outside Diameter: 3.500 INCHES NOMINAL IN. 25 total characteristics are documented in the Federal Logistics Information System.