Mole HVAC Equipment Ltd has originally been created to utilize our experience in design and manufacturing of HVAC equipment.

• Cooling Coils
• Air Handling Units (AHUs)
• Refrigeration & Air Conditioning Units (AC Units)
• HVAC Dampers
• Volume Control Dampers (VCD)
• Shut Off Dampers (SOD)
• Backdraught Dampers (BDD, NRD)
• Pressure Relief Dampers (PRD)
• Weather Louvres
• Filters
• Lint Filters
• Electric Heaters
• Heat Exchangers

Volume control dampers (VCD) supplied by Mole HVAC Equipment Ltd are designed for air volume adjustment and not for isolation. Therefore, they are not fitted with blade stops and side seals (for isolation dampers please refer to Shut Off Dampers).

We offer both rectangular and circular VCDs. Rectangular dampers are provided in single and multi blade arrangement. Circular VCDs are offered as single blade units only.

Our Volume Control Dampers are supplied with a lockable hand quadrant as standard. If powered operation is required they can also be supplied with electric or pneumatic actuators. 

Dampers are provided with flanges pre-drilled for installation within the HVAC ductwork. Flanges are drilled in accordance with BS EN ISO15138:2007 unless otherwise specified by Client. All dampers are identified with st/steel nameplates containing relevant information on supplied equipment.

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Mole HVAC Equipment Ltd supplies dampers generally in accordance with the following specification:-

Casing

2.0 or 3.0mm thick fully welded casing complete with 50 or 75mm own material flanges drilled to BS EN ISO15138:2007or Client specification. Lifting points are incorporated within damper casing. Minimum damper size is 100x100mm, maximum single unit size 2000x2000mm, larger units can be supplied as multiple unit assemblies. Standard damper casing length is 200mm however other lengths available if required.  

Blades

2 x 1.5mm double skin, aerofoil construction. Two parts of blade spot welded and bolted to the damper shafts. Longer blades are additionally fitted with siffening channels for increased rigidy.

Shafts

Φ16 end shafts. Shafts are removable to allow bearing replacement if necessary.

Bearings

Maintenance free polymer bearings (suitable for service temperatures between -40 and +80°C and short term temperatures of up to +170°C). High temperature bearings can be provided in necessary.

Controls

Standard control package includes quarter turn adjustable handle mounted on handle plate. Damper can be locked in any position between fully open and fully closed using provided locking device. Stainless steel position indicators are fixed to the handle plate. Other control options, including pneumatic or electric actuator can be provided if required.

Nameplate

Stainless steel nameplate containing relevant information is attached to the damper casing. Full colour aluminum nameplates can be offered if required.

Materials

As standard our dampers are manufactured from 316L St/Steel. Other materials to include 304 St/Steel, pre galvanized mild steel, galvanized after manufacturing mild steel or aluminum can be provided if necessary.