The valve series ARCA-ECOTROL is a robust, compact and lightweight control valve with a pneumatically operated, easy field reversible multi-spring diaphragm actuator ARCAPAQ 812 and a sturdy, pipeless and vibration-resistant mounted digital positioner ARCAPRO 827A. The highlight of this valve series is the ARCA-double-life (quick-changeable trim combination) with the option of a double-side use by reversing the seat ring.

The valve seat can be economically produced in different materials like for example, hardened and stellited steel, ceramic, Tungsten carbide, etc., with or without soft sealing. In comparison to conventional designs the speciality of the ECOTROL’s soft sealing is, that the PTFE-element is flexibly supported by an additional Elastomer O-Ring. The additional metal-to-metal sealing of plug and seat ring ensures that the PTFE-disc suitable for doubleside use is not physically deformed by excessive loads.

Three-way valves up to DN500 in cast bodies.  In all thermodynamic processes ARCA three-way valves are applied. 

Example 1: Heating and Cooling systems for Dowtherm & Glycol Services

Example 3: High pressure three-way gas valves for transferring, compressing and pre-heating stations in gas pipeline systems, and De-Superheating Applications.

Series 200 Three Way Valves (2.2mb)

Ball shaped stainless steel body with optimum flow characteristics and suitable for CIP-conditions The inside height of the body is equal to the diameter of the pipeline, thus avoiding domes and pockets, with their negative effects.  Corrosion, residues when changing the medium and cleaning problems are definitely excluded. Rigid connection of the valve components by means of solid clamping rings of precision cast stainless steel.  Easy to remove and simple dismantling of the valve.

Positioners improve the control accuracy of valves and butterfly valves considerably.  Friction in the stuffing box and fluid born fluctuations to the spindle cause deviations in the valve position.  These are balanced out by the positioner.

Valve Positioner Type 824, pdf (1.2mb)

The ARCAPRO Type 827A positioner is a Smart Valve Positioner of the second generation, which is characterised by substantially increased functions, higher reliability and extended diagnosis.  It has been designed as a compact instrument with a modern and practical design, providing for a reliable operation even under very rough ambient conditions.  The display is also visible during operation, so that the operating data can be checked with a quick glance at the instrument.