The Pump Unit,reciprocating, cataloged under National Stock Number 4320-01-359-2427, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4320-01-359-2427 |
| Primary Part Number | 88621-1 |
| Item Name | Pump Unit,reciprocating |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls |
| Status | ACTIVE |
| Discharge Connection Quantity | 1 |
| Pumping Element Type | PISTON |
| Intake Connection Type | THREADED INTERNAL |
| Pumping Element Operating Position | HORIZONTAL |
| Unpackaged Unit Length | 18.250 INCHES NOMINAL IN |
| Reciprocating Stroke Type | FIXED |
| Prime Mover Quantity | 1 |
| Pump Quantity | 1 |
| Operating Pressure | 25.0 POUNDS PER SQUARE INCH GAUGE (PSIG) NOMINAL POWER DRIVE LBS |
| Pump Reciprocating Design | SINGLE ACTING |
| Unpackaged Unit Width | 7.750 INCHES NOMINAL IN |
| Discharge Connection Thread Size and Series/type Designator | 0.375-18 NPT |
| Intake Connection Thread Size and Series/type Designator | 0.375-18 NPT |
| Unpackaged Unit Height | 7.750 INCHES NOMINAL IN |
| Discharge Pressure | 100.0 COMPREHENSIVE PROCUREMENT GUIDELINE - CONSTRUCTION PRODUCTS - CEMENT AND CONCRETE CONTAINING CENOSPHERES |
| Cylinder Quantity | 1 |
| Discharge Connection Type | THREADED INTERNAL |
| Intake Connection Quantity | 1 |
| Material | STEEL PUMP BASIC |
| Prime Mover Type | PNEUMATIC MOTOR |
| Media for Which Designed | AIR |
| Operation Relationship Design | SIMULTANEOUS |
| 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 |
|---|---|
| 88621-1 PRIMARY | Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls (USA) |
| Reference | Meaning |
|---|---|
| 88621-1 | 5/9 Secondary reference U.S. Government activity |
| S-86-JN-5 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4320-01-359-2427 is a Pump Unit,reciprocating, manufactured by Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-359-2427 has 1 manufacturer part number on file: 88621-1 (Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls).
Key specifications for 88621-1: Discharge Connection Quantity: 1; Pumping Element Type: PISTON; Intake Connection Type: THREADED INTERNAL; Pumping Element Operating Position: HORIZONTAL. 22 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.