HVAC Ceiling Ducts Galvanized Sheet Round Regulating Volume Control Air Vent with Rubber Seal for Air Duct Ventilation System

• Material: Stainless Steel
• Usage: for Air Conditioner
• Type: Round Diffuser
• 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
• Venetian-Style Air Layers: Single
• Installation: Outlet
• Certification: Factory Standard
• Surface Finish: Galvanization
• Use: Preventing The Reverse of Air-Flow in Circular Duc
• Shape: Round
• Performance: Low Noise
• Thickness: 0.8mm
• Function: Air Duct
• Transport Package: Standard Carton
• Specification: from 100mm to 400mm
• Trademark: Airandus
• Origin: China
• HS Code: 7616999000
• Package Size: 15.00cm * 15.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

 

Back Draught Damper

 PVA

The pressure relief valve PVA is used for preventing the reverse of air-flow in circular
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 reducti.
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.

Model	ΦD(mm)	L1(mm)	L(mm)
PVB 100	96	6	88
PVB 125	121	19	88
PVB 150	146	31	88
PVB 160	155	36	88
PVB 200	197	56	88
PVB 250	247	61	128
PVB 315	312	94	128
PVB 355	352	65	198
PVB 400	397	64	198
PVB 450	447	80	248
PVB 500	497	107	248