Non-Return/Pressure Relief Damper
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Non-Return/Pressure Relief Damper (nrd/prd) To maintain over pressure in areas or to avoid backflow in the system. These simple, efficient devices can be offered with a spring or weight kit. DS-010-R03 Wozair reserves the right to make changes to this datasheet without notice.

Non Return/Pressure Relief Damper The NRD and PRD are high integrity dampers designed to meet the demanding requirements of the HVAC markets where corrosion resistance, mechanical integrity and performance are primary factors. The PRD is used to relieve pressure and the NRD is used to prevent backflow through ventilation duct systems and openings. They are suitable for use in horizontal ducts or wall mounted and, in addition, the NRD can be mounted in a vertical duct with upward airflow only. Technical Information Minimum Size 200W x 200H x 200D / 300D mm Maximum Size 2000W x 2000H x 300D...

Dimension Drawing Example wozai r 3 HVAC SPECIALISTS Wozair reserves the right to make changes to this datasheet without notice.

Please Note: For Spring Kit add 1kg nominally For a Weight Kit add 2.5kg nominally (per 0.5m2 damper face area) Please Note: For Spring Kit add 1kg nominally For a Weight Kit add 2.5kg nominally (per 0.5m2 damper face area) Duct Width: 500 Case Depth: 200 Non Return/Pressure Relief Damper Case Material: Stainless Steel Low Carbon 1.4307 = 304L Mild Steel Sheet Pre-Galvanised FeP02 nac = GSS Case Thickness: 2.0 mm Controls Options WK = Weight Kit SP = Spring Kit Nominal: Clear inside duct dimensions Duct Size: 'Quote' (Width x Height) Order Code Example: NRD/316L/2.0/500W/300H/200D/WK wozai...

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