Wholesale Factory Ventilation Round Air Flow Volume PVA Back Draught Damper for Air Conditioning Duct

• Material: Stainless Steel
• Usage: for Air Conditioner
• Application: Transportation
• 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
• Shape: Round
• Performance: Low Noise
• Model Number: Back Draught Damper
• Product Name: Duct Connector
• Application Scenarios: Hotel, Industry
• Function: Ventilation System
• Feature: Durable
• Transport Package: by Sea
• Specification: standard
• Trademark: Zengo
• Origin: China
• Production Capacity: 20000

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.