FAQ

Here are some frequently asked questions from our customers about Mizuno Strainer products and the answers to them.
Please refer to these before contacting us about the product features, how to use them, how to get the most out of them, as well as how to solve any problems you may have while using them.

FAQ

Q.With a duplex type, it cannot be used to switch cocks or it is difficult to understand how to switch cocks.

A.

The following is an explanation of the upper and lower handle type and cam lever handle type.

Upper and lower handle type

  1. Turn the upper handle to the left.
    Turn the cock lift handle 1 or 2 turns counterclockwise. As there is some play at first, check the rising of the shaft.
  2. Switch the lower handle to the opposite side.
    Turn the cock handle until it is in contact with the stopper. The tank at the side to which the cock handle was newly moved is now in use.
  3. Turn the upper handle to the right.
    Turn the cock lift handle 1 or 2 turns clockwise.
    Tightening by hand is enough. Do not use a hammer, etc.

Cam lever handle type

  1. Push downward on the cam lever (handle). A cam on the lever lifts the cock.
  2. While holding it down, turn it to the opposite side. Turn it until the cam lever is in contact with the stopper .
    The tank at the side to which the cam lever was moved is now in use.
  3. Once you release your hand, the switching is complete.
    The spring inside the body allows the cock stopper to be in contact with the body, and it can be used normally.

Q.Is a special tool necessary to tighten the cover holder bolt that fixes the strainer in place?

A.

Regarding the one-touch cover holder bolts for H-type, duplex, and simplex oil strainers and small can water strainers, in which the covers are secured with a single bolt, standard hexagonal bolts are used for the bolts, and it is sufficient to tighten the bolts by hand using a wrench or spanner that can tighten the bolt. (An O-ring is used for the seal, and it is sufficient that the body and cover are in contact.)

As reference, an example of the tightening method for each cover holder bolt nominal diameter is shown below.

※As a rule of thumb, tighten the bolts until they don’t move.

Bolt
nominal diameter
Example of
tightening method
Recommended
torque (N.m)
M16 (width between sides: 24)Lightly tighten with one hand using an 340 mm (external dimension) box wrench.(20〜40)
M20 (width between sides: 30)Lightly tighten with one hand using an 385 mm (external dimension) box wrench.(40〜60)
M22 (width between sides: 32)Lightly tighten with one hand using an 400 mm (external dimension) box wrench.(60〜80)
M24 (width between sides: 36)Strongly tighten with one hand using an 430 mm (external dimension) box wrench.(100〜140)
M30 (width between sides: 46)Strongly tighten with one hand using an 540 mm (external dimension) box wrench.(140〜220)
M36 (width between sides: 55)Strongly tighten with one hand using an 570 mm (external dimension) box wrench.(200〜300)