Frequently Asked Questions

The standard screens of our strainers are as follows.
* For meshes other than those below, please contact us separately.

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Mesh size means the number of openings between 1 inch (25.4 mm), and the larger the number, the finer the mesh opening.
In the figure below, there are five openings per row between 1 inch (25.4 mm), and it is an image of a screen with a mesh size of 5.
*Actually, there is no specification for a mesh size of 5.

The double-acting type is a type that operates by operating pressure caused by air entering chambers A and B of the cylinder. The single-acting type is a type that operates by operating pressure caused by air entering chamber A of the cylinder and, in the other direction, the cylinder is returned by the spring force to operate.

A electromagnetic valve operates a valve with the electromagnetic force of a solenoid. On the other hand, an electric automatic valve operates the valve with a motor and gears.
Electric automatic valves generally have a longer actuation time than electromagnetic valves due to use of a motor, so they have the advantage of being less prone to water hammer.

We only handle electric automatic valves that use motors, and do not handle electromagnetic valves.

Basically, an electric automatic valve stops at the valve opening at the time of power failure. However, only in the case of a spring-return type electric automatic valve, the valve is closed at the time of power failure. Please contact us if you want to use a spring-return type electric automatic valve to be open at the time of power failure.

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The durability of an electric automatic valve varies depending on the use condition.
In our in-house tests, actuators have been tested 100,000 times, and valves have been tested 10,000 times. However, be sure to perform regular inspections during use to prevent unexpected accidents.

The durability of a pneumatic automatic valve varies depending on the use condition.
In our in-house tests, actuators have been tested 100,000 times, and valves have been tested 10,000 times. However, be sure to perform regular inspections during use to prevent unexpected accidents.

We provide the KISMOS (KITZ Smart Monitoring System) as a solution to prevent valve troubles. For details, please visit our website or contact your nearest sales office.

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The successors to the EK Series / EL Series are the EX series. Since the product specifications differ between the EK series / EL series and the successors, wiring change / additional works may be required to replace and use them.
For details, please refer to “About precautions regarding replacement of EK / EL series → EX series products” in the EX series instruction manual.
(KJ-4016: Aluminum alloy electric actuator EX series)
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We do not sell only the actuators and valves of small automatic operation valves.
(Small automatic operation valves)

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Please contact your nearest sales office for diaphragm valves.

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“W, O and G” stand for Water, Oil and Gas.
* “Gas = Other than toxic and flammable gases”

The part replacement timing depends on your use condition, environment and frequency of use.
Please perform daily and periodic inspections and check for damage, etc. of parts.

Our products are designed on the premise of positive pressure and cannot maintain the degree of vacuum.
When used in a vacuum line, our products can be used in a range of low vacuum.

* In the case of medium vacuum, our products will be available as an option. Please refer to the FAQs below.
・ Tell me the specifications of butterfly valves according to the degree of vacuum.
・ Tell me the specifications of ball valves according to the degree of vacuum.
* We consider 1 – 600 Torr as low vacuum and 0.001 – 0.1 Torr as medium vacuum as rough guides.

Please refer to the table below for the amount of leakage.

Tell me the series of butterfly valves according to the degree of vacuum.
Tell me the specifications of ball valves according to the degree of vacuum.

The approximate weights of our products can be checked on our website.
They can be viewed by searching by model.

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The product catalogs can be downloaded from our website.

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The product drawings can be downloaded from our website.
The drawings can be downloaded by searching by model.
When viewing or downloading, please use it after user registration.

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Please contact your dealer for the delivery period.

Please contact your dealer for the purchase price.
Please check the price list for the manufacturer’s suggested selling price.

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Concerning the RoHS Directive, we manage the product as a product equivalent to the RoHS Directive.
As for the Certificate of Non-inclusion related to restricted substances of the RoHS Directive, you can down load the Regulated Substance Non-inclusion Report from our website.
When viewing or downloading, please use it after user registration.

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We also handle custom-order products. Please contact your dealer for the range of manufacture.