Ductile Iron DIN3352 flanged Double Orifice Air Release Valve DN100,PN10,PN16

Ductile Iron DIN3352 flanged Double Orifice Air Valve also name air release valve,air relief valve 

Air valve body materials:ductile iron

Air Valve Design standard:DIN3352
Flange standard:DIN 2501
Test standard:BS6755

Work temperature:NBR≤80°C,EPDM≤120°C

Air valve DN size:DN100 mm

Double orifice air valve that combines both large orifice & small orifice functions within one unit. The large orifice allows air to be expelled from the system during filling of a pipeline and admit air back into the system whenever sub-atmospheric pressure occurs. Air is vented from the system until water enters the valve and lifts the float against its seat, ensuring a tight seal. In the event of sub-atmospheric pressure in the system, the water level drops causing the float to fall from its seat and allow the admission of air.

During normal working of the main the small orifice releases the air which accumulates under pressure. With the main in operation, the float is normally against its seat. As air enters the chamber body the water level is depressed until a level is reached when the float drops from its seat, which allows air to escape. The consequent rise in water level returns the float to its seat.

1. Fast Delivery: around 10 days below 500Metric Tons after sight of Irrevocable L/C or Deposit;( lots of high quality products are in stock)

2. Quality Assured: Strictly acc. To International standard ASTM & BS & EN & JIS, with System ISO certification

3. Good Service: supplied professional technical guide free of charge at anytime;

4. Reasonable Price: to be better support your business.

We are one of the leading manufacturers of ductile iron pipe,pipe fittings,dismantling joints,flanged adaptors, couplings, valves, water meter,manhole covers,steel flanges , steel pipe,steel pipe fitting,PVC pipe,PVC pipe fitting,PE pipe,PE pipe fitting,rubber O-rings, , fasteners, pumps, motor shells and other castings and forgings. Our products are made according to different standards, such as ISO2531, EN545, EN14525, ISO4422, ISO7005, DIN3352, BS5163, DIN3202, BS2494, BS4504, EN124 and other relevant ISO, EN, BS, DIN and ANSI standards. Moreover, our products have been selling well in European, Middle East, Southeast Asian, South African and South American countries for more than 10 years. We can also make the castings and forgings according to customers' drawings or samples. Presently, we are looking forward to your inquiries and to establishing long term cooperation relationship based on mutual benefits.  

1. Can I get free samples?
A: Yes, we can provide you the free samples, but you need to bear their own delivery costs.

2. Can I request to change the form of packaging and transportation?
A: Yes, We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.

3. Can I request to advance the shipment?
A: It should be depends on whether there is sufficient inventory in our warehouse.

4. Can I have my own Logo on the product?
A: Yes, you can send us your drawing and we can make your logo, but you have to bear their own the cost.

5. Can you produce the products according to my own drawings?
A: Yes, we can produce the products according to your drawings that will be most satisfy you.

6. Which price terms could accepted?
A: FOB,CIF all acceptable.