The Valve,gate, cataloged under National Stock Number 4820-01-537-1899, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Flowserve Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-537-1899 |
| Primary Part Number | SW12111-04 .50IN |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Flowserve Inc |
| Status | ACTIVE |
| Bonnet Attachment Method | BOLTED |
| Material Document and Classification | ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Furnished Items and Quantity | 1 GASKET AND 1 HANDWHEEL |
| Valve Operation Method | MANUAL |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Valve Size | 0.500 INCHES IN |
| Nominal Pipe Size Accommodated | 0.860 INCHES IN |
| Inlet Relationship with Outlet | IDENTICAL |
| Connection Type | SOCKET, WELD, PIPE |
| Material | STEEL BODY |
| Stem Type | RISING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| SW12111-04 .50IN PRIMARY | Flowserve Inc (USA) |
| 34873-2 ASSY SW12111-04 .50IN | Flowserve Inc (USA) |
| 34873-2 | Flowserve Inc (USA) |
NSN 4820-01-537-1899 is a Valve,gate, manufactured by Flowserve Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-537-1899 has 3 cross-referenced part numbers: SW12111-04 .50IN (Flowserve Inc), 34873-2 ASSY SW12111-04 .50IN (Flowserve Inc), 34873-2 (Flowserve Inc).
There are 2 known substitutes for 4820-01-537-1899: 4820-01-535-6854, 4820-01-535-6860. Verify interchangeability with system specifications before substitution.
Key specifications for SW12111-04 .50IN: Bonnet Attachment Method: BOLTED; Material Document and Classification: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY; Furnished Items and Quantity: 1 GASKET AND 1 HANDWHEEL; Valve Operation Method: MANUAL. 12 total characteristics are documented in the Federal Logistics Information System.