The Valve,radiator,heating, cataloged under National Stock Number 4520-01-396-5531, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Honeywell Inc Commercial Div. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-396-5531 |
| Primary Part Number | VP525A1150 |
| Item Name | Valve,radiator,heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Honeywell Inc Commercial Div |
| Status | ACTIVE |
| First End Thread Series Designator | NPT |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | 240.0 FAHRENHEIT DEGF |
| Body Style | STRAIGHT THRU |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Second End Relationship with First End | NOT IDENTICAL |
| First End Connection Type | THREADED EXTERNAL PIPE |
| Media for Which Designed | STEAM AND WATER, FRESH |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| First End Nominal Thread Size | 0.750 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| VP525A1150 | Honeywell Inc Commercial Div (USA) |
| Reference | Meaning |
|---|---|
| VP525A1150 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4520-01-396-5531 is a Valve,radiator,heating, manufactured by Honeywell Inc Commercial Div, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-396-5531 has 1 manufacturer part number on file: VP525A1150 (Honeywell Inc Commercial Div).
Key specifications for VP525A1150: First End Thread Series Designator: NPT; First End Thread Direction: RIGHT-HAND; Temp Rating: 240.0 FAHRENHEIT DEGF; Body Style: STRAIGHT THRU. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.