China Factory Price Air Duct Fitting Galvanized Shutter Back Draught Damper for Ventilation System

• After-sales Service: on Line Service
• Warranty: One Year
• ventilation mode: mechanical ventilation
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: PVA
• Certification: Factory Standard
• Usage: for Air Conditioner
• Installation: Outlet
• Material: Galvanized Steel
• Type: Damper
• Venetian-Style Air Layers: Damper
• Size: 80-315mm
• Delivery Time: 30days
• Payment Term: Tt
• Package: Carton
• OEM: Provide
• Thickness: 0.6/0.8mm
• Transport Package: Pallet or Carton
• Specification: 80-315mm
• Trademark: Airandus
• Origin: China
• HS Code: 7326909000
• Production Capacity: 10000PCS/Month
• Package Size: 20.00cm * 20.00cm * 10.00cm
• Package Gross Weight: 0.500kg

Product Description

PVA
Back Draught Damper
The pressure relief valve PVA is used for preventing the reverse of air flow
in circular duct systems.
The casing of PVA is made from galvanized steel, the blades are made of
aluminium.
With a inner foam seal for better tightness and noise reducing.
The valve opens when overpressure occurs and closes by means of spring
when the pressure drops.
It is recommended to install the shutter into horizontal duct.