Pulse Line
Pressure reducing valve - PREDU | ARI
Flanged
PN 16
PN 25
PN 40
DIN
EN-JL 1040 (GG25) Cast iron
EN-JS 1049
1.0619+N
ARI-PREsys® Overview:
- Pressure Reducing Stations (PRS) are self-acting or equipped with electro-pneumatic control.
- Available models:
- ARI-PREsys®-S (for steam)
- ARI-PREsys®-W (for water)
- ARI-PREsys®-A (for air)
Key Features:
- Compact design: Easy installation with clear setup instructions.
- Maintenance-free design using stainless steel bellows.
- Process security: Utilizes harmonized components to ensure stable operation.
- Pressure-secure subassembly: Built to guarantee safety.
- Dry and clean process steam: Optionally includes a steam drier.
- Bypass pipe for emergency operation: Ensures continued function even during maintenance.
- Condensate drain option on the minimum pressure side.
- Wall or floor brackets for installation.
Pressure Reducing Station Models:
- PRS-S: Basic design for steam, self-acting.
- PRS-S Plus: Includes condensate drain on the P2 side.
- PRS-S Complete: Comes with complete equipment, including a steam drier, bypass, and full condensate drains.
- PRS-W and PRS-A: Models designed for water and air, respectively, also available in complete versions.
Pressure-Temperature Ratings:
- The pressure-temperature chart provides operational limits, which depend on the materials used and temperature.
- For example:
- EN-JL1040 (Cast Iron) operates at 16 bar max at 50°C, dropping to 9.6 bar at 350°C.
- 1.0619+N (Carbon Steel) operates at 40 bar max at 50°C, dropping to 24 bar at 350°C.
Applications:
- The pressure reducing stations are primarily used to reduce a higher input pressure to a lower, safe output pressure.
- The system is ideal for industrial steam, air, and water systems, providing stable pressure reduction without the need for auxiliary power.
Technical Data:
- The pressure reducing valves come in multiple sizes with Kvs values ranging from 3.2 m³/h for small sizes (DN15) to 125 m³/h for larger sizes (DN100).
- The stations can be designed with various control methods, including self-acting control or electro-pneumatic control for more precision.
System Design Options:
- The system offers customizable designs with options such as bypass pipes, condensate drains, and specific valve materials based on the application (e.g., EN-JL1040, EN-JS1049, 1.4408 for stainless steel components).
