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 New Air and Dirt Separator Design


Type JP603 Air and Dirt Separator Flanged

Specification Micro Bubble Air and Dirt Separator consisting of carbon steel body with stainless steel diffuser screen. RAL 9006 white aluminium paint finish. Flanges drilled to BS4504 NP16.

Application Stourflex air and dirt separators are designed to remove both air and dirt from circulating heating and chilled water systems. Air is vented automatically from the top of the unit. Dirt, sludge and solid particles are drained manually from the valve fitted on the base.

Maximum working temperature 95ÂșC. Maximum working pressure 10 Bar. Maximum test pressure = 1.5 x working pressure.

For efficient air and dirt removal separators should be line size.

Lagging Stourflex are now able to offer a tailor made flexible lagging jacket to help reduce heat losses on LTHW systems and heat gains & condensation on CHW systems. Please ask for more information.



Part Number N.B (mm) Body Diameter (mm) Total Height with AAV & Drain Valve (mm) Pipe Centre to Drain Valve (mm) Installed Length Face to Face (mm) Dry Weight (kg) Volume (I)
JP603-50 50  169  668  343  420  12.71  8.8
JP603-65 65  169  668  343  420  14.30  8.8
JP603-80 80  220  773  368  500  22.43  18.3
JP603-100 100  220  773  368  504  24.67  18.3
JP603-125 125  324  993  478  635  46.47  56.7
JP603-150 150  324  993  478  635  47.25  56.7
JP603-200 200  400  1083  525  766  72  107
JP603-250 250  450  1263  635  860  108  162
JP603-300 300  500  1363  655  926  156  224



new air and dirt


Installation, Operation and Maintenance Instructions
For JP603 Air and Dirt Separators




Stourflex offer a complete range of air and dirt separators. Check that the correct separator has been selected for the operating conditions that exist.
To enable efficient air and dirt removal the separator should be line size.


Micro Bubbles are easily released from circulating water where the highest temperature and lowest pressure conditions occur in the system, for this reason the separators should normally be fitted where water is at the highest temperature and the lowest pressure available.
The examples shown below are typical installation layouts, but other acceptable and efficient locations for the separator exist.
When selecting the position for the separator please be aware that pressure also has a major effect on the release of micro bubbles. For temperatures normally found within heating systems a one meter drop in head pressure is equivalent to a rise in temperature of four degrees centigrade. Where lower temperatures are involved in cooling applications system pressure becomes the determining factor of the position of the separator.
Stourflex JP603 Micro Bubble air and dirt separators should be installed in horizontal pipework, the direction of flow is optional.

  disgram 2


Automatic air vent should be fitted to the top of the separator, commissioning valve on the side and drain valve on the base, as shown in the illustration at the top of this page. The commissioning valve is used to quickly remove air when filling the system. Flexible hose or fixed pipework should be installed to enable dirty water to be drained to a convenient safe place.

Automatic air vent should be checked periodically to ensure it is functioning correctly. To prevent sediment build up and maintain efficiency the separator should be flushed at regular intervals. Dirt sludge and solid particles can be removed by opening the drain valve on the base of the separator until the water runs clear. WARNING To prevent scalding safe practice must be observed when venting hot water at pressure.