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.

Our range of high integrity non-return damper have been designed for use in a range of industries including the offshore oil & gas and nuclear markets where corrosion resistance, mechanical integrity and performance are of utmost importance. They are used to prevent backflow and include the following design features:

MODEL: NRD FEATURES NRD ORDER KEY FINISHING Mill Frame constructed of high quality Galvanised steel with one side flange for Duct to Duct mounting. SUS is available on request. Blades constructed of light weight quality aluminium. Damper height exceeding 300mm supplied in multiple blades. Length of Damper blade exceeding 1200mm is

s Brass / PVC bushes, code B1/B2. s Counter weight, code K. s Natural anodized aluminium, code A. s Power coated to RAL colour, code Z. Non Return Dampers/Pressure Relief Dampers ... EG 663 Wall mounted NRD, casing and blades made from SS (grade 304) DIMENSIONS (mm) - PRESSURE DROP 30 30 180 W x H Wall Fresh Air SG 663 AG 663 EG 663 Non return ...

Non return damper is a HVAC damper used in areas where air is supposed to flow only in one direction. Non return dampers can be mounted on the wall or duct, depending upon the …

2022年7月12日 · 暖通通风工程里面nrd是止回阀。 暖通通风工程里面fvd是70°c防火阀。 暖通通风工程里面fvdh是280°c防火阀。

One Stop Solutions for Air Conditioning Supplier of High Quality Air Distribution Devices and Duct Accessories. GI Duct and Accessories, Pre-insulated Duct and Accessories,Slot Diffusers, Circular Diffusers, Jet Diffusers, Floor Grills, Door Grills, Linear Bar Grills,Disk Valve, NRD, Air Louvers, Sand Trap Louvers, VCD, MVCD, Access Doors, Fire Dampers, MFD, XLP Form Insulations, Fiberglass ...

Vauxaire Industries Sdn Bhd is the professional and specialized manufacturer and installer for grille, diffuser, damper & architectural building materials (ABM) in Malaysia, is mainly engaged in ACMV & outdoor architectural solutions for builders, …

Presenting our 300×60 NRD Non-Return Damper, a fundamental part for any ventilation framework. This damper is intended to permit air to stream in one bearing just, forestalling discharge and guaranteeing that your framework works productively and really.

300×60 NRD Non-Return Damper is designed to regulate or shut off airflow in air ducts with rectangular cross-sections. Ideal for HVAC systems, this damper ensures one-way airflow to …