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The service temperature for internal solutions is generally -20℃ to 40℃ for frameless tanks and -20℃ to 60℃ for tanks with frames. However, for AT and SA types the upper limit is set at 40℃ taking into account their shape and internal solution, even though they include frames. That said, continuous use at high temperatures may lead to deformation of the tanks or have a negative impact on their lifespan, so we recommend you first consult with our Tokyo Head Office or the branch office or sales office nearest to you. Please also contact our Tokyo Head Office or the branch office or sales office nearest to you regarding use of AT-type tanks at temperatures above 40℃.

The allowable pressure range is +0.98kPa (≒0.01kgf/cm²) for pressurization and -0.49kPa (≒0.005kgf/cm²) for decompression. The tanks have been designed with a standard pressure equal to our atmospheric pressure. Please be aware that exceeding the allowable pressure range may lead to tank deformation and damage.

While life expectancy will vary according to the usage environment (internal solution, location, usage temperature, etc.), our tanks generally have a life expectancy of ten to fifteen years when placed outside.

White-colored (natural) tanks are vulnerable to UV rays and will begin to crack within two to three years, so they are not suitable for outdoor usage.

Details on our tanks' chemical resistance can be found on our home page. Click here to view. For chemicals not listed here, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

Polyethylene conforms to the Food Sanitation Act and is acceptable to use with food-grade liquids. To receive a certificate verifying this, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

As polyethylene conforms to the Food Sanitation Act, there are no issues in terms of its safety or hygiene. It will, however, leave an odor in the water. It is possible to reduce the smell by adding activated charcoal to the water or by rinsing several times with hot water, but the odor will not be completely eliminated. Extended periods of storage also increase the likelihood of odors in the water, so we recommend storing your water for as short a time as possible. (Hard water has a tendency to be more resistant to odors than soft water.)

We cannot change the dimensions on our polyethylene tanks; however, it is possible to change the dimensions of our FRP tanks. For details, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

Our lorry tanks cannot withstand the pressure from the soil when placed underground, so they cannot be used in this manner.

While the size and location of the attachment are restricted, it is possible. For details, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

It is not possible to connect a valve directly to the lorry tank's liquid outlet nozzle. You will need to use our original sockets. These sockets are kept in stock and can be delivered immediately.

While the size and location of the fitting are restricted, it is possible. For details, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

Our lorry tanks and rectangular and round containers were not designed to hold such types of internal liquids and cannot be used to store industrial chemicals.

The RL-designated 40A drain plug can be attached to our R-300L and R-500L rectangular containers. T-200LF and T-300LF with attached drain plug are available for our T-200L and T-300L round containers. For other containers, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

Casters can be attached to our rectangular containers (R-type). Product names with a "K" at the end include a caster. (For example: R-500LK)
Drain plugs can be attached to our R-500L, R-300L, and R-200L products.

While the size and location are restricted, it is possible. For details, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

Nearly all of our products include level guages.

Covers are sold separately. Rectangular and round container products for which molded covers are available as follows. If you would like to attach a cover to a product not listed in the following table, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

The products you are referring to are produced using the Structural Foam Injection molding method. These products are made through the injection molding of polyethylene that has been infused with nitrogen gas. The white spots your question refers to are the nitrogen gas. The blue is the polyethylene.

Please send us a picture of the part you would like to exchange as the shape of a part will vary according to its specifications. After taking a look at the picture, we will determine whether or not it is possible to exchange the part. Also, please be aware that the retention period for parts is ten years from when sales are discontinued.

Yes, you can just order parts. To order a specific part and receive information about attaching it, please contact our Tokyo Head Office or the branch office or sales office nearest to you.

The dimensions are included in our tank catalogue. Click here to view our catalogue (P.27, 28, 29).

Heat fusion side manholes can be attached starting with A-type 6,000 liter tanks.

This information is included in our tank instruction manual. Click here (P.2) to view.

These letters refer to the molding method used to manufacture the product. SF means "Structural Form Injection;" RM means "Rotational Molding;" and BL means "Blow Molding." Each product was made according to the molding method designated by these letters.