PVG-EX proportional valves

Danfoss

Reliable in explosive environments

Our PVG-EX range is PVG proportional valves designed for use in potentially explosive atmospheres such as mining, oil and gas.
PVG-EX shares the same characteristics as standard PVG. It is a hydraulic load sensing (LS) valve designed to provide maximum flexibility. From a simple load controlled directional valve to an advanced load independent electrically actuated proportional valve.
The PVG-EX modular system makes it possible to assemble the valve group in such a way that it precisely meets various functional requirements. Furthermore, the valve's compact outer dimensions remain unchanged regardless of the specified combination.

Features and benefits

  • Load-independent flow regulation:
    • Oil flow to an individual section is independent of the load pressure of this section
    • Oil flow to one section is independent of the load pressure of other sections
  • Good regulatory properties
  • Auxiliary load sensing ports for external target pressure adjustment
  • Electric, mechanical or hydraulic control
  • Energy saving
  • Up to 12 basic modules per valve group
  • Several types of connecting threads
  • Compact design and installation

DANFOSS PVE-EX electro-hydraulic actuator

DAnfoss PVE-EX

The PVE-EX electro-hydraulic actuators are certified for use in potentially explosive atmospheres. They include a slide control system in a closed loop and a status monitor for reliable control.

PVE-EX is approved and certified according to the ATEX and IECEx standards and thus allows the use of proportional Danfoss PVG distributors in explosive atmospheres. The PVE-EX is designed with a cast iron cover to reliably protect the internal connectors and built-in electronics, while the outer protective coating provides excellent protection against corrosion.
PVE-EX ex db is a non-explosive design that is critical for use in mining applications and in oil and gas applications.

Safe and predictable control

As standard for all Danfoss PVE electro-hydraulic actuators, the use of the feedback control is a closed loop control. This ensures that the desired position of the slider is achieved and thus a high accuracy of flow is achieved. This results in improved machine performance and productivity as well as reduced operator fatigue. Danfoss PVE actuators have safety features installed - fault condition monitoring, slider position indication.

Modular concept

PVE-EX is another member of Danfoss PVG's modular Danfoss proportional distribution family. This concept gives the machine designer the freedom to choose the cabinet to meet the demanding application requirements as well as the installation and assembly requirements.
The top cover of the PVE-EX can be moved forward or backward for easier installation, reducing the complexity of the cable harness.
The standard actuators with voltage control signals are supplied with an actuator with a 0-10V control signal.
The entire portfolio of Danfoss PVE actuators is based on 40 years of experience and is designed to work seamlessly and precisely with Danfoss PVG proportional distributors. This gives the machine manufacturer greater flexibility with more configuration options to fully exploit the potential of the machines.

Certificates

  • PVE-EX electro-hydraulic actuators are certified for oil and gas (Group IIB) and mining (Group I) applications:
  • Product Approval and Certification Center for Mining Industry - MA - China
  • European regulatory framework for the production, installation and use of explosive atmospheres - ATEX - EU
  • Standards of the International Electrotechnical Commission for Equipment Used in Explosive Atmospheres - IECEx - EU
  • Office of Safety and Health in the Mining Industry - MSHA - USA
     
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Peter Lauko

Tel.: +421 37 7777 955
Mobile: +421 903 282 644
Fax: +421 37 7777 967
Email:lp@bibus.sk