Nailor - Curtain Fire Dampers

Round External Retrofit Terminal Units

Model Series 36VRR
Convert existing constant volume systems or old "system powered" mechanical regulator terminals to energy efficient variable volume operation.
• Available in ten sizes to suit and install simply in round ductwork. 0 – 4050 cfm (0 – 1912 l/s).
• Various configurations custom fabricated to suit individual application.
• Pressure dependent or independent airflow control.
• 'Diamond Flow' multi-point averaging flow sensor on pressure independent models.
• Pneumatic, electric, analog electronic or digital control.

Rectangular Slide-in Retrofit Terminal Units

• Model Series 36VRS
Convert existing constant volume systems to energy efficient variable volume operation.
• Available in 13 valve sizes to handle a large range of air volumes. 0 – 15000 cfm (0 – 7080 l/s).
• Custom fabricated to suit any duct size from 5" x 5" (127 x 127) up to 52" x 26" (1321 x 660).
• 'Diamond Flow' multi-point averaging sensor.
• Pressure independent airflow control.
• Pneumatic, analog electronic or digital control.

Internal Retrofit Terminal Units

• Model Series 36VR
36VR Series Designed to replace the mechanical regulators in old "system powered" terminal units in order to substantially lower the operational static pressure requirement. The air valves include a damper, flow sensor and actuator and make use of state-of-the-art controls in order to reduce operating cost.
• Custom built on a specific project basis.
• Variable or constant volume pressure independent airflow control.
• 'Diamond Flow' multi-point averaging flow sensor.
• Models available to retrofit most 'brand name' terminal units.
• Pneumatic, analog electronic or digital control.

General Product Overview - Retrofit Terminal Units