The Valve,expansion, cataloged under National Stock Number 4820-01-151-2555, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Wilshire Corp. Government technical data includes 24 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-151-2555 |
| Primary Part Number | 09993-01 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Wilshire Corp |
| Status | ACTIVE |
| Valve Equalizer Location | INTERNAL |
| Second End Seat Angle in Deg | 45.0 |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Thread Class | 2A A |
| Body Style | STRAIGHT THRU |
| First End Seat Angle in Deg | 45.0 |
| First End Thread Class | 2A A |
| First End Style Designator | FLARED |
| Bulb Length | 3.000 INCHES NOMINAL IN |
| Bulb Diameter | 0.500 INCHES NOMINAL IN |
| Mounting Method | CLAMP BULB |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | FLARED |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Surface Treatment | ENAMEL OUTSIDE |
| First End Outside Diameter Tube Accommodated | 0.500 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Valve Expansion Control Type | THERMOSTATIC |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Connection Type | THREADED EXTERNAL TUBE |
| Furnished Items | TAILPIECE AND INSULATION SLEEVING |
| Second End Outside Diameter Tube Accommodated | 0.250 INCHES NOMINAL 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 |
|---|---|
| 09993-01 PRIMARY | Wilshire Corp (USA) |
NSN 4820-01-151-2555 is a Valve,expansion, manufactured by Wilshire Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-151-2555 has 1 manufacturer part number on file: 09993-01 (Wilshire Corp).
Key specifications for 09993-01: Valve Equalizer Location: INTERNAL; Second End Seat Angle in Deg: 45.0; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL. 24 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.