The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-252-2637, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-252-2637 |
| Primary Part Number | SS-4MA2 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Flow Control Device | STEM AND INTEGRAL DISK |
| Valve Stem Design | SINGLE SEAT |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | ANGLE |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| Manual Control Method | KNOB |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | STEEL CORROSION RESISTING BODY |
| Material | STEEL CORROSION RESISTING STEM |
| Media for Which Designed | AIR AND WATER |
| Thread Size and Series/type Designator | 1/4-18 NPT FIRST END |
| Outlet Pressure Setting | ERR-060 |
| Filter | INCLUDED |
| 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 |
|---|---|
| SS-4MA2 PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| 000-8006-355 | 5/2 Secondary reference U.S. Government activity |
| SS-4MA2 | 5/9 Secondary reference Nupro Co |
NSN 4820-01-252-2637 is a Valve,regulating,fluid Pressure, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-252-2637 has 1 manufacturer part number on file: SS-4MA2 (Swagelok Co).
Key specifications for SS-4MA2: Flow Control Device: STEM AND INTEGRAL DISK; Valve Stem Design: SINGLE SEAT; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL. 16 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.