Throttle valves (DK 228)
- Housing made of sendzimir galvanised sheet steel or stainless steel
- Laser-welded without intruding fold
- The push-fit ends are press-calibrated according to DIN EN 12237, they are dimensionally stable and fit accurately
- Optionally available with electronic/pneumatic adjustment
For adjusting flow rates.
In general the lip sealing is insensitive to damages in case of slightly canted or badly trimmed ducts.
If the lip sealing is damaged or lost due to an unforeseen event, it is only necessary to put on a new loose sealing ring.
Because of the design of the sealing, the components can easily be separated from each other again.
Because no additional sealing components, e.g. tape, are required, the sealing design with lip sealing system is especially suitable for visible installation.
The smooth surface of the laser-welded housing prevents the accumulation of dirt and dust particles.
Non-ageing lip sealing made of EPDM - a material which is resistant to slightly aggressive vapours and chemical products.
Sealing system of the push-fit ends:
The push-fit ends are airtight according to DIN EN 12237 Class D.
The bypass dampers can be operated in temperature ranges between -15°C to +100 °C .
According to DIN EN 12097, the duct system and the throttle valve must be accessible for operation and maintenance.
The shaft feed-through of the throttle valve bearing is located in a maintenance-free and airtight screw connection.
The standard throttle valves are equipped with a manual adjustment device, which locks automatically (no tools required for adjustment and regulation). They can also be used for electric remote regulation.
Throttle valves with insulation are available in the insulation thickness 25 or 50 mm for all versions.
Version 1: Throttle valve with manual adjustment device DKH
Version 2: Throttle valve with console for motor adjustment DKM
Version in stainless steel - material 1.4301 or 1.4571
Ref. No.: 228 with flat connection
Ref. No.: 9228 with lip sealing
Throttle valve, type: DKH, (DKM, DKP) - Make: AEROTECHNIK E. Siegwart.
Tube body made of sendzimir galvanised sheet steel - laser-welded, the shaft feed-through of the throttle disc is located in a maintenance-free and airtight screw connection; push-fit ends airtight according to DIN EN 12237 Class D
Temperature range for application: -15°C - +100°C