The Valve,safety Relief, cataloged under National Stock Number 4820-00-446-3537, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Banner Industries Inc Skinner Engine Co Div. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-446-3537 |
| Primary Part Number | FIG997 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Banner Industries Inc Skinner Engine Co Div |
| Status | ACTIVE |
| Disk Loading Method | SPRING |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Bonnet Attachment Method | THREADED |
| Style Designator | ANGLE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Bonnet Type | INSIDE SPRING |
| Thread Series Designator | NPT ALL ENDS |
| Nominal Thread Size | 1.000 INCHES ALL ENDS IN |
| Adjustable Pressure Range | +26.0 TO 75.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Flow Control Device | DISK |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Material | COPPER ALLOY STEM |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Material | COPPER ALLOY SEAT |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-446-3537 is a Valve,safety Relief, manufactured by Banner Industries Inc Skinner Engine Co Div, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-446-3537 has 3 cross-referenced part numbers: 997 (Lunkenheimer Co), FIG997 (Banner Industries Inc Skinner Engine Co Div), 997 (Banner Industries Inc Skinner Engine Co Div).
There are 12 known substitutes for 4820-00-446-3537: 5120-00-056-3938, 5340-00-527-3160, 5340-00-527-3178 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for FIG997: Disk Loading Method: SPRING; Media for Which Designed: WATER, FRESH SINGLE RESPONSE; Bonnet Attachment Method: THREADED; Style Designator: ANGLE. 19 total characteristics are documented in the Federal Logistics Information System.