The Piston,valve, cataloged under National Stock Number 4810-00-218-4289, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-218-4289 |
| Primary Part Number | CS4320-0169 |
| Item Name | Piston,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| 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 |
|---|---|
| CS4320-0169 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| YB1 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
NSN 4810-00-218-4289 is a Piston,valve, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-218-4289 has 2 manufacturer part numbers on file: CS4320-0169 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), YB1 (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for CS4320-0169: Special Features: IRON,GRAY HIGH TEST FOR 8 RINGS AND 1 PISTON,STEEL FOR 2 PIPE PLUGS,7 IN. LG PISTON,2.497 @NOMINAL DIA @OF PISTON W/RINGS,PISTON HAS 1-1/4 IN. DIA THRU LG,PIPE IS IN EA END 1-11-1/2 PIPE THDS,8 PISTON RING INSTALLED W 2.510 IN DIA,7/64 IN.MAX THICKNESS,0.186 IN NOMINAL W,SPLIT IN EA PISTON RING IS 0.018 NOMINAL W,END PLUGS HAVE 3/8 IN. 16 TAP,PISTON ENDS HAVE 1/64 IN. BY 45 DEG CHAMFER IN; End Item Identification: PUMP,RECIPROCATING,WARREN PUMPS,MODELS 6X9X12VERTICALSINGLE,7X10X12VERTICALSIMPLEX,6X7X12,VSDA6X6X6,6X7X12VSDA. 0 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.