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Gas-release Valve

High-performance valve (Star valve)
Valve seal which is easy to stick

Characteristic of Gas-release valve

Even after packaging, roasted coffee breathes ad the packaging will gradually expand. In order to maintain the coffee’s freshness, a safety valve can be attached to the bag and release CO2 off-gassed from the coffee from the package.

Characteristic of Star valve

Star valve
Star valve is high performance valve manufactured by SEIKO COFFEE. Built in packing in the main body of plastic molding, it has excellent non-return property and strongly prevents intrusion of outside air.As it is firmly welded to the inside, the danger of the valve dropping off is very low.
Structural illustration
The opposite side (dotted line) floats with the packing retainer of the cap as a fulcrum, and gas is discharged from the gas vent hole.

Characteristic of valve seals

Valve seal
Since silicone oil has been applied, there is no need to apply oil when installing.
Because it is a seal type, you can easily install it yourself.
Paste it on the outside of the bag or container and use it.
As it is thin, you will not take stock place.
Structural illustration
The valve seals for coffee mitigate closing of gas outlets by stacking products with pillow columns.
【Performance Stability】 No change in performance occurs even when the temperature changes from 5°C to 40°C.

Customer installation method

  1. Fill the bag with coffee.
  2. Determine the valve mounting position, open at least one hole of 0.2 mm to 0.5 mm in the product bag, and put the valve seal on it.(Recommended Number of Hole 5 to 8 · Refer to the above picture)

【Note】

  • Open the air hole within the valve inner diameter.
  • The installation position is free, but please install it in the position considered as much as possible so as not to hit the valve seal when stacking products.
  • Vacuum packaging is not possible.
  • A small amount of coffee powder may spill.
  • Since the sticky part of the seal becomes weak, it becomes the adhesion time limit for 6 months.
  • Please note bulk buying.After sticking the seal to the bag, you can use it for one year.
Both valves can be mounted by our company and sold valves themselves.
Please feel free to contact us.

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Use of Gas-release valve

With a coffee bag
COFFEE
Even after packaging, roasted coffee breathes ad the packaging will gradually expand. In order to maintain the coffee’s freshness, a safety valve can be attached to the bag and release CO2 off-gassed from the coffee from the package.
With a bag of fermented food
OTHERS
Others are used such as fermented foods and powder detergents that generate gas, food raw materials and so on.
If you need further information, please do not hesitate to consult us.

Step from ordering to delivery

  1. Send us your sample packaging. We will attach the valve and send it back.
  2. Send us your coffee bags. (Delivery fee is paid by customers)
  3. Using the latest equipment, our skilled staff will attach the valves to your coffee bags.
  4. After the valves are attached, we send them to you (Delivery fee is paid by SEIKO COFFEE Company)
  • We deal with various coffee bags, we also manufacture original bags.Please do not hesitate to contact us.
  • It can also sell only the gas release valve for both.
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