Maeda Koki MK type WATER SIGNAL – Flow Indicator Water signal and Oil signal MK model produced by Maeda Koki in Japan, Oil signal and Water signal Model MK have a function for detecting minimal flow. MK water signal manufactured using an acrylic tube is limited to the use of 80 ℃ or less. (Flow switch of the product is limited to the use of 60 ℃ or less.)

I can see a flow at first sight
It is a rheoscope confirming fluid flow by the movement of transparent balls (or a float) in the jurisdiction.
I cannot confirm the flow quantity.
The installation direction does not matter
The posture when attach it as use a spring inside looks up and look down; and
I can perform sideways-facing freely.

Features

I can see a flow at first sight. It is a rheoscope confirming fluid flow by the movement of transparent balls (or a float) in the jurisdiction.
I cannot confirm the flow quantity. The installation direction does not matter
The posture when attach it as use a spring inside looks up and look down; and
I can perform sideways-facing freely.

Applications

Water, Air, and Oil

Specifications

Fluid		Water
Flow quantity		The reference mentioned above	When standard specifications flow quantity or less want the above, please refer.
Connection		Rc internal thread	Change to R screw The combination with the R screw is possible, too.
Heat-resistant temperature		A maximum of 80 degrees Celsius	–
Withstand pressure		1MPa	–
Materials	Transparent pipe	Acrylic	–
	Coupling	C3604 (brass)	I can produce the product made in SUS, too.
	Spring	SUS304	–
	Nylon ball	Nylon 66	I may use a cylindrical float.
	O ring	Nitrile rubber	–