Factory Price Ventilation Duct Rubber Backdraft Damper Shutter Inline Back Draught Damper for HVAC System

• After-sales Service: Online Technical Support
• Warranty: 3 Years
• 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: CE
• Function: Ventilaion
• Feature: Air Duct
• Application: Air Conditioning
• Keyword: Back Draught Damper
• Usage: HVAC
• Transport Package: Carton
• Specification: 100mm~500mm
• Trademark: Airandus
• Origin: China
• HS Code: 7326909000
• Production Capacity: 50000/Month
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 10.000kg

Product Description

 

Back Draught Damper, PVA

1. The pressure relief valve PVA is used for preventing the reverse of air flow in circular duct systems.

2. The casing of PVA is made from galvanized steel, the blades are made of aluminium.

3. With a inner foam seal for better tightness and noise reducing.

4. The valve opens when overpressure occurs and closes by means of spring when the pressure drops.

5. It is recommended to install the shutter into horizontal duct.

Model	D(mm)	L1(mm)	L(mm)
PVA100	96	6	88
PVA125	121	19	88
PVA150	146	31	88
PVA160	155	36	88
PVA200	197	56	88
PVA250	247	61	128
PVA315	312	94	128
PVA355	352	65	198
PVA400	397	64	198
PVA450	447	80	248
PVA500	497	107	248