Pressure regulating valve - PRESO | ARI | Ari-Armaturen
Pressure regulating valve - PRESO | ARI | Ari-Armaturen
Pressure regulating valve - PRESO | ARI | Ari-Armaturen
Pressure regulating valve - PRESO | ARI | Ari-Armaturen

Pressure regulating valve - PRESO | ARI

The Pressure Regulating Valve - PRESO is a high-performance valve designed for precise pressure control in various applications. It features a spring-loaded operation for accurate pressure management and a compact design with a standard bellows seal. The valve offers a proportional flow characteristic for smooth pressure adjustments and is maintenance-free, ensuring long-term reliability. It allows for exact and easy pressure adjustment and is available in materials such as grey cast iron, SG iron, cast steel, and stainless steel. **Technical Specifications:** - **Valve Types & Configurations:** Straight-through design with flanged connections and a spring-loaded mechanism for differential pressure control. - **Material Options & Pressure Ratings:** Available in models with nominal pressure PN16 and nominal diameters DN15-100, constructed from various materials including grey cast iron, SG iron, cast steel, and stainless steel. - **Pressure Ranges & Adjustment Options:** Offers pressure ranges from 0.5 to 10.0 bar, with precise pressure setting via an adjusting screw and a leakage class IV according to DIN EN 1349. - **Flow Performance & Dimensions:** Provides a range of Kvs values and dimensions to suit different system requirements. **Applications:** The ARI-PRESO® is ideal for pump protection, heat exchangers, thermal oil systems, piping networks, and condensate systems, ensuring stable pressure and preventing excessive differential pressures. **Installation & Operation:** Designed for easy installation in standard pipeline systems, it features DIN EN 1092-1/-2 standard flanges and allows for easy pressure adjustments via an external screw mechanism, offering maintenance-free operation for a long service life.
Standard (Options)
  • DIN
Connection (Options)
  • Flanged
Material (Options)
  • EN-JL 1040 (GG25) Cast iron
  • EN-JS 1049
  • 1.0619+N
  • 1.4408
Pressure Rating (Options)
  • PN 16

Description

Spring-loaded operation for precise pressure control
Compact design with a standard bellows seal
Proportional flow characteristic for smooth pressure adjustment
Maintenance-free design
Exact and easy pressure adjustment
Available in grey cast iron, SG iron, cast steel, and stainless steel



Technical Specifications

Valve Types & Configurations

  1. Straight-through design with flanged connections
  2. Spring-loaded mechanism for differential pressure control


Material Options & Pressure Ratings

Model Nominal Pressure (PN) Material Nominal Diameter (DN)
12.753 PN16 Grey cast iron (EN-JL1040) DN15-100
22.753 PN16 SG iron (EN-JS1049) DN15-100
32.753 PN16 Cast steel (1.0619+N) DN15-100
52.753 PN16 Stainless steel (1.4408) DN15-100

Other materials and special versions are available upon request.



Pressure Ranges & Adjustment Options

Pressure Range (bar)
0.5 - 1.5 bar
1.0 - 3.0 bar
2.0 - 5.0 bar
4.0 - 10.0 bar
  • Precise and easy pressure setting using the adjusting screw
  • Leakage class IV according to DIN EN 1349 (≤ 0.01% of nominal flow)


Flow Performance & Dimensions

DN (Size) Kvs Value (m³/h) Seat-Ø (mm) Travel (mm) Height (mm) Weight (kg)
DN15 2.0 21 2.0 230 3.6
DN20 2.5 21 2.0 230 4.1
DN25 3.0 27 2.5 290 6.6
DN32 5.0 31 2.5 300 7.7
DN40 10.0 41 4.0 325 10.4
DN50 20.0 51 5.5 330 12.9
DN65 22.0 66 7.0 400 20.2
DN80 29.0 81 8.0 440 28.9
DN100 45.0 101 10.0 500 43.7


Applications

The ARI-PRESO® is ideal for:
Pump protection – Maintains minimum flow through bypass lines
Heat exchangers & thermal oil systems – Ensures stable pressure in circulation systems
Piping networks – Prevents excessive differential pressures
Condensate systems – Prevents flashing and maintains pressure balance



Installation & Operation

  • Designed for easy installation in standard pipeline systems
  • Available with DIN EN 1092-1/-2 standard flanges
  • Maintenance-free operation ensures long service life
  • Pressure settings can be easily adjusted via an external screw mechanism

Tests and Certification

DGRL 2014/68/EU (PED Pressure Equipment Directive)
TA - Luft TÜV-Test-No. 922-9241371