3/16" non return valve silicone rubber duckbill check valves aquarium one way valve

When the duckbill valve is under no pressure inside, the duckbill outlet is closed under its own elastic force, and as the internal pressure gradually increases, the duckbill outlet gradually increases, keeping the liquid discharged at a high flow rate.

①Outlet                 ②Duckbill valve core                 ③Inlet

.................................................................... 1/16'' ....................................................................

.................................................................... 1/8'' ....................................................................

.................................................................... 5/32'' ....................................................................

.................................................................... 3/16'' ....................................................................

We have Six port sizes to choose: 1/16'', 1/8", 3/16", 1/4", 5/16" and 3/8".
Four housing materials: PVDF / PP / ABS / PA66
Three diaphragm materials: Silicone / V it on / EPDM

Different material check valve can been used in different application
If you need ozone resistant, we recommend PVDF material check valve
If you need high temperature resistant, we recommend PVDF material and PA66 material check valve
If you need low temperature resistant, we recommend ABS material
If you need corrosion resistant, we recommend PVDF and PP material.
If you need oil, diesel fuel, gasoline resistant, we recommend PA66 material.

If you are not sure which kind check valve to choose, pls check some points and we will give you our advices:
1. What's the size of the check valve port that you need? Or the inner diameter of the hose that the check valve connected to.
2. Where does the check valve you use in?
3. What medium can the check valve come into contact with? Such as Air, Ozone, Water, Oil ( Gasolines, Lubricant Or Edible Oil )
4. What is the using temperature about your check valve?
5. What is the Cracking pressure of the valve you require?

Located in the east of China, Shanghai. DGOzone Ltd. is one technical listed company, who professionally designs, develops, distributes ozone generators for civilian and industrial air and water treatments.

DGOzone majors in ozone generator units, ozone generator machines and accessories . Ozone generator units include ceramic plate ozone generator units and ceramic tube ozone generator units. The accessories cover venturi, check valve, air dryer and so on. Our ozone generator units are certificated through CE and RoHS, honored by nice clients from home and abroad, which are widely used in houses, hotels, schools, offices, mansions, swimming pools, food factories, bottled water fill lines and fields of medical treatment and public health.

Much respect is paid to the talent and much to science and research of ozone high-tech and environmental protection materials by DGOzone. Most effort is made on meeting requirements of different customers with positive service, quality products and favorable prices. OEM service offered, Design service offered, Buyer label offered.

Ozone is 100% eco-friendly and chemical-free, leaving no chemical residue or harmful byproducts. For the benefit of worldwide people and the environment, now DGOzone is doing best to be well positioned as an Efficient, Excellent and Entire supplier in this wonderful sector.

Now DGOzone has been one of the biggest exporter for ozone generators and accessories in China. Besides, DGOzone is also one of the biggest donator in national ozone fields to China Pavilion in Expo 2010 Shanghai.

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