Float operated pump trap - CONA P | ARI

ARI CONA P – Float Steam Trap with Pump Functionality

The ARI CONA P is a PN16 float steam trap with integrated mechanical condensate pump functionality. It is used in heat exchangers and closed vessels where differential pressure is not consistently positive, such as in low steam pressure operations, variable loads, or vacuum conditions. When the inlet pressure is sufficient, it operates as a standard steam trap; when backpressure exceeds available pressure, it functions as a condensate pump using motive medium.

Technical Specifications

• Nominal Pressure: PN16.
• Body/Cover Material: EN-JS1049.
• Operating Pressure: from -0.8 barg to 8 or 13 barg, depending on configuration.
• Operating Temperature: -10 to 200 °C.
• Permissible Differential Pressure: 5, 8, or 13 bar.
• Displacement: 10.5 l, vessel volume approximately 22 l.
• Group 2 liquids with density 0.85–1.15 kg/dm³.

Connections and Installation

Basic connections are Rp 1 1/2" for condensate inlet/outlet, Rp 1/2" for motive medium, and Rp 3/4" for venting, according to EN 10226-1. Optional flanges per EN 1092-1 and welding ends DN25, DN40, DN50 are available. Standard installation is horizontal. A minimum filling height of 300 mm is required, with a design range of 500–1200 mm.

Application Selection

The CONA P is selected when a simple float steam trap cannot discharge condensate due to backpressure or vacuum. Sizing requires: heating steam supply, product inlet/outlet temperatures, collector backpressure, condensate line length and DN, geodetic height difference, and motive medium pressure.

Maintenance and Sealing

No electric actuator required. Internal parts are stainless steel, wear parts are hardened stainless, with Inconel X-750 springs. Gaskets are graphite with CrNi metal reinforcement, and the sealing ring is stainless steel. Maintenance can be performed without disconnecting piping.

FAQ

When is it used? In exchangers, vessels, and thermal processes with variable differential pressure.
What motive medium is required? Must be compatible with the gas phase of the drained medium; steam is used for steam condensate.
When is manufacturer inspection needed? When backpressure exceeds 5 bar.