Air Separators Cleanvent CVA Air Separators

Air Separators Introduction

Air Separators = The Cleanvent - The Air Free Solution - An air free water system.

Problems arising with air in water systems

Deaeration

The word Deaeration describes the removal of dissolved gases from liquids such as air from water. When water is heated or the pressure reduced gas microbubbles are released into the system. Microbubbles can be the cause of major of problems such as pump failure, corrosion and energy loss.

The Solution

The Cleanvent removes air / microbubbles. Installed at the hottest point in the system the Cleanvent will eliminate these microbubbles from heating and chilled water systems.

Features

• Greatly reduced commissioning times after initial fill.
• Longer system life (through air elimination)
• Low-pressure drop
• Bi-directional flow
• Max.temp. 110c (Higher On Request)
• Max. Working pressure 10 bar (Higher On Request)
• Tested to 21 bar
• Standard carbon steel shell (stainless on request)
• Air collects in the air chamber before being automatically vented
• The same valve is used for releasing air when filling the system
• An internal stainless steel concentrator to aid removal of Air.

Cleanvent (CVA) location Click link for further deatils

This unit must be installed at the hottest part of the system. In a heating system this is the main flow from the boilers. The static head must not exceed 30 metres.

In a chilled water system the unit must be located in the return close to the chiller. Maximum static head must not exceed 15 metres.

N.B. if the static head is greater than these figures the efficiency of the Cleanvent is reduced. The maximum flow rate through the Cleanvent is 3m/sec. If these values are exceeded the efficiency is reduced.

Commissioning

The Cleanvent requires no special commissioning .All units are fitted with a fast bleed valve, which should be used when initially filling the system. The same valve is used for draining off floating "scum" and also prevents the possibility of dirt clogging the air vent.

Scalding is a danger at high pressures and temperatures. Ensure that the water is safely piped to drain before opening the valve.

Most of the dissolved air will be removed in a few days. However this may vary from system to system .In large systems it may take several weeks.

Flanges

All flanges are drilled to BS 4504 PN16 as standard. Plain ends and other flange rating are available on request.