Technical Specifications
Below are the comprehensive technical parameters for the Gestra PA 46 intermittent blowdown valve under ASME/ANSI Class 300 pressure rating standards.
| Parameter | Official Specification Details |
|---|---|
| Manufacturer / Brand | Gestra AG (Germany) |
| Type / Model | PA 46 (Rapid-Action Intermittent Blowdown Valve - Manual Lever) |
| Nominal Size (DN) | DN 50 (2 Inch / 2") |
| Pressure Rating (Class) | ANSI Class 300 (CL 300 / ASME B16.34) |
| Max. Service Limits | Max. 41.5 Bar at a saturation temperature of 254 °C |
| End Connection | Flanged ANSI Class 300 RF (Raised Face) |
| Body / Cover Material | Forged Steel / Carbon Steel A105 (High-temperature & extreme pressure resistant) |
| Operation System | Manual hand lever with spring-loaded automatic self-closing mechanism |
| Main Application | Boiler sludge and scale discharge (bottom boiler blowdown) in steam systems. |
Important Installation Notice:
The rapid-action Gestra PA 46 DN 50 valve operates effectively with an opening time of only 2 to 3 seconds per blowdown cycle to prevent excessive steam loss. Please verify your piping flange face-to-face dimensions comply with ANSI B16.5 Class 300 standards before system alignment and installation.
