Yoshitake 400 is a spinner sight glass designed for cold and hot water applications. Fluid flow can be easily detected from the rotation of the spinner, with flow rate changes identified by its rotating speed. The simple design allows for easy assembly and disassembly, and the unit can be connected to both horizontal and vertical piping.

Features

• Fluid flow can be detected from the rotation of the spinner, and flow rate change is identified by its rotating speed.
• Easy to assemble and disassemble due to simple design. Can be connected to horizontal/vertical piping.

Specifications

Application	Cold and hot water
Maximum working pressure	0.7 MPa
Max. temperature	100°C
Max. thermal shock	40°C
Body Material	Cast bronze
Glass Material	Borosilicate glass
Spinner Material	Special heat-resistant resin
Connection	JIS Rc screwed

WARNING

• When using this sight glass at a temperature difference of 40°C or more, note that the glass may get damaged if the temperature rapidly rises or the glass is cooled from outside.
• Glass part and spinner are consumable supply.

Dimensions and Weights

Nominal size	d	L (mm)	$H_1$ (mm)	H (mm)	D (mm)	Weight (kg)
10A	Rc 3/8	76	12	67	54	0.45
15A	Rc 1/2	76	14.5	69.5	54	0.50
20A	Rc 3/4	83	17	76	54	0.60
25A	Rc 1	89	21.5	93.5	66.5	0.95

Min. & Max. Flow Rate (Water)

Nominal size	Min. flow rate L/min	Max. flow rate L/min
10A	0.8	8.3
15A	1.0	13
20A	1.5	18
25A	2.3	30

INFO

• The minimum flow rate is the value required for the spinner to continuously rotate.
• The maximum flow rate is the value when pressure loss is approximately 0.02 MPa. For further information, see the pressure loss chart.

Pressure Loss Chart (For Water)

Parts List

No.	Name of Parts	Material
1	Body	Bronze (CAC406)
2	Cover	Brass (C3771)
3	Glass	Borosilicate Glass
4	O Ring	NBR
5	Spinner	Nylon
6	Spindle	Stainless Steel (SUS316)