The Valve,gate, cataloged under National Stock Number 4820-01-252-4457, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Stockham Valves and Fittings Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-252-4457 |
| Primary Part Number | B121 |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Stockham Valves and Fittings Inc |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL PIPE |
| Bonnet Attachment Method | UNION |
| Inlet Relationship with Outlet | IDENTICAL |
| Material | COPPER ALLOY 836 BODY |
| Operating Pressure and Type | 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Material | COPPER ALLOY 694 STEM |
| Material Document and Classification | ASTM B-371 ALLOY 694 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE DISK |
| Material | COPPER ALLOY 836 DISK |
| Valve Operation Method | MANUAL |
| Material | COPPER ALLOY 836 SEAT |
| Pressure Class | ERR-060 |
| Maximum Operating Temp and Media for Which Designed | 406.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF |
| Stem Type | RISING |
| Bonnet Type | INSIDE SCREW |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-252-4457 is a Valve,gate, manufactured by Stockham Valves and Fittings Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-252-4457 has 2 cross-referenced part numbers: B121 (Stockham Valves and Fittings Inc), 106 (Stockham Valves and Fittings Inc).
There are 6 known substitutes for 4820-01-252-4457: 6135-00-112-8634, 9905-00-318-0187, 6750-00-522-2706 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for B121: Connection Type: THREADED INTERNAL PIPE; Bonnet Attachment Method: UNION; Inlet Relationship with Outlet: IDENTICAL; Material: COPPER ALLOY 836 BODY. 16 total characteristics are documented in the Federal Logistics Information System.