1. Traditional 3″ butterfly valve with anti-suction devise
2. Revolutionary 3″ ball valve
a) Compared with butterfly valve, ball valve is sealed more tightly and with better resistance to pressure. There is no block when valve is opened, which make liquid flow through freely and quickly.
b) In the joint position between internal valve and flexitank, a safety protection device is added. This device could effectively prevent inner film blocking the valve, and make residual liquid the minimum after discharging.
3.valve with 2″ or 2.5″ quick connector for choice

Qingdao Source Seal Technology Co., Ltd. is located in Qingdao, which is the coastal open city in east of China. Source Seal is a professional manufacturer integrating R& D, design, manufacturing and sales.

Our main products are rubber seals, rubber joint, container liquid bag special valve, textile machinery accessories, EPDM rubber products, nitrile rubber products, fluorine rubber products, bake lite products, other rubber and plastic accessories. There are 10 advanced vulcanization production lines with experienced workers, and the rubber product we can make is more than 500 tons.

With strict quality system control, our rubber sealing products already get several international certification, such as WRAS, ACS, SGS and other related certificate from customers. Our customers are all over the world, our products is very popular since they come out.

In 2005, our technical department developed a special valve for container liquid bag. This valve has many advantages, such as convenient operation, safety, reliability, quick discharging speed and so on. In 2010, with the effort of our research and development department, we launched new rubber joint series product, which is using high quality EPDM, NBR, PTFE material.

With professional working team, strict management and advanced equipment, our company, Qingdao Source Seal, will offer the high quality rubber products with good price and service for all customers around the world.

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