The Yoshitake FS-I-Z is a highly visible sight glass designed for cold water, hot water, and oil applications. Engineered with a robust ductile cast iron body and hardened glass plates, it safely handles a maximum working pressure of 0.7 MPa and temperatures up to 60℃. Its internal brass nozzle structure is specifically designed to provide clear visibility, making it highly effective for checking fluid presence and color, particularly in vertical piping installations.

Features

• The absence or presence of fluid or color of fluid can be checked due to the transparent plate on both sides.
• Excellent visibility by internal nozzle structure at the time of vertical piping.

Specifications

Specification	Value
Application	Cold and hot water, Oil
Maximum working pressure	0.7 MPa
Max. temperature	60℃
Body Material	Ductile cast iron
Glass Material	Hardened glass
Nozzle Material	Brass
Connection	JIS Rc screwed, JIS 10K FF flanged

Dimensions and Weights

Screwed Type

Nominal size	L (mm)	H (mm)	S (mm)	P (mm)	Weight (kg)
10A	100	74	40	71	0.9
15A	100	74	40	71	1.0
20A	110	92	46	78	1.4
25A	120	94	52	84	1.8
32A	150	132	70	110	4.0
40A	150	132	70	110	4.0
50A	160	142	70	110	7.5

Flanged Type

Nominal size	C (mm)	D (mm)	H (mm)	S (mm)	P (mm)	L (mm)	Weight (kg)
10A	65	90	80	40	80	160	3.0
15A	70	95	80	40	80	160	3.0
20A	75	100	100	46	88	180	3.9
25A	90	125	102	52	96	180	5.4
32A	100	135	140	75	120	180	8.0
40A	105	140	140	75	120	180	8.0
50A	120	155	150	80	128	220	11.0