| STYLE DESIGNATOR | STRAIGHT THRU | 
| VALVE OPERATION METHOD | MANUAL | 
| MATERIAL | ALUMINUM ALLOY 2024 FLOW CONTROL DEVICE | 
 | STEEL COMP MTX1015 SEAT | 
| SURFACE TREATMENT | ANODIZE | 
| FLOW CONTROL DEVICE | POPPET | 
| MEDIA FOR WHICH DESIGNED | SULPHUR DIOXIDE, GASEOUS SINGLE RESPONSE | 
| MAXIMUM OPERATING PRESSURE | 21.50 POUNDS PER SQUARE INCH SINGLE RESPONSE | 
| VALVE DISCHARGE FLOW RATE | 2.0 CUBIC FEET PER MINUTE | 
| CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END | 
| CONNECTION STYLE | FLARED (TUBE) 1ST END | 
| SEAT ANGLE | 45.0 DEGREES 1ST END | 
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END | 
| THREAD SERIES DESIGNATOR | UNF 1ST END | 
| NOMINAL THREAD SIZE | 0.437 INCHES 1ST END | 
| THREAD DIRECTION | RIGHT-HAND 1ST END | 
| BONNET TYPE | INSIDE SCREW | 
| BONNET ATTACHMENT METHOD | INTEGRAL | 
| DISK LOADING METHOD | SPRING | 
| OPENING PRESSURE SETTING | 21.5 POUNDS PER SQUARE INCH | 
| ADJUSTABLE PRESSURE RANGE | 20.5 TO 21.5 POUNDS PER SQUARE INCH | 
| FEATURES PROVIDED | BONNET PACKING AND | 
 | PRESSURE TIGHT OUTLET SIDE | 
| TEST DATA DOCUMENT | 51663-RD10280M DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) | 
| THE MANUFACTURERS DATA |  | 
| MANUFACTURERS CODE | 51663 | 
| DESIGN CONTROL REFERENCE | RD10280M |