KVS-Volumenstromregler

Circular mechanical self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems with low airflow velocities

• Suitable for airflow velocities from 0.8 m/s
• Very simple commissioning
• Volume flow rate can be set using a rotary knob and a scale on the outside of the casing
• Simple retrofit of an actuator for variable volume flows
• Any installation orientation; maintenance-free
• Casing air leakage to EN 1751, class C

Optional equipment and accessories

• Circular silencer Type CA or CF for the reduction of air-regenerated noise
• Hot water heat exchanger Type WL and electric air heater Type EL for reheating the airflow
• Actuator for variable volume flows or for qv_min - qv_max switching

Rectangular self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems

•  Mechanical system-powered, without external power supply
• Suitable for supply and extract air
• Correct operation, even under unfavourable upstream and downstream conditions (straight length required upstream 1.5 B, downstream 0.5 B)
• Close tolerances on flow rate
• Flow rate setting using pointer on external scale, scale accuracy approximately ± 4 %
• Flow rate range 4 : 1
• Damper blade shaft supported in bearings
• Bellows also acts as an oscillation damper
• Differential pressure range 50 to 1000 Pa
• Independent of orientation
• Damper blade mechanisms maintenance-free
• Operating temperature range 10 to 50 °C

Simplified installation

The Type EN and END volume flow controllers are fitted with flanges on both ends. This ensures very low leakage at the joint.

Acoustic requirements

Depending on requirements, a TX silencer may be supplied to reduce the air-regenerated noise.(installed by others).

Circular, mechanical self-powered controllers for insertion into ducting, for the quick and easy balancing of constant volume flow rates in ventilation and air conditioning systems

• Unique damper blade edge for acoustic optimisation
• Simple and quick commissioning on site
• Range of volume flow rate setpoints for each nominal size
• Precise and simple setting of volume flow rates using a scale
• Best accuracy among controllers for insertion
• Suitable for low airflow velocities from 0.8 m/s
• Any installation orientation; maintenance-free

Circular self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems

• Volume flow rate can be set using an external scale, no tools required
• High control accuracy
• No on-site test measurements required for commissioning
• Suitable for airflow velocities of up to 12 m/s
• Any installation orientation; maintenance-free
• Casing air leakage to EN 1751, class C

Optional equipment and accessories

• Acoustic cladding for the reduction of case-radiated noise
• Secondary silencer Type CA or CS for the reduction of air-regenerated noise
• Hot water heat exchanger Type WL and electric air heater Type EL for reheating the airflow
• Actuator for switching between setpoint values

Circular, mechanical self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems, approved and certified for potentially explosive atmospheres (ATEX)

• ATEX-compliant construction
• Approved for gases, mists, vapours and dusts in zones 1, 2, 21 and 22
• Volume flow rate can be set using an external scale, no tools required
• No on-site test measurements required for commissioning
• Suitable for airflow velocities of up to 12 m/s
• Any installation orientation
• Casing air leakage to EN 1751, class C

Optional equipment and accessories

• Acoustic cladding for the reduction of case-radiated noise
• Secondary silencer Type CA for the reduction of air-regenerated noise

Rectangular, mechanical self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems, approved and certified for potentially explosive atmospheres (ATEX)

• ATEX-compliant construction
• Approved for gases, mists, vapours and dusts in zones 1, 2, 21 and 22
• Suitable for volume flow rates up to 12,600 m³/h or 3,500 l/s
• Volume flow rate adjustment from outside by rotary knob
• High control accuracy
• No on-site test measurements required for commissioning
• Casing air leakage tested to EN 1751, class C
• Visual display of damper blade position for operating point optimisation

Optional equipment and accessories

• Acoustic cladding for the reduction of case-radiated noise
• Secondary silencer Type TX for the reduction of air-regenerated noise