Impeller Flow Indicator for Clear Visual Flow Indication

The impeller flow indicator is designed for visual pipeline flow monitoring. Its body is cast from 304 stainless steel with internal threaded connections at both ends. A clear, pressure-resistant viewing window houses a red impeller that rotates as fluid passes through, providing direct indication of fluid presence, flow condition, and approximate flow velocity.

Compact and easy to install, the indicator offers good pressure resistance and clear visual inspection. It is widely used in hydraulic circuits, cooling water systems, water treatment equipment, heating pipelines, and small chemical pipelines for real-time flow monitoring.

Impeller flow indicator

Specifications

Female-threaded eccentric impeller flow indicator dimensional drawing.

**Table 1: Female-Threaded Eccentric Impeller Flow Indicator Dimensions**
DN	L	H
6	85	60
8	85	60
10	85	70
15	85	70
20	95	80
25	110	80
32	135	95
40	135	95
50	155	105

Female-threaded straight-through impeller flow indicator with red impeller.

Female-threaded straight-through impeller flow indicator dimensional drawing.

**Table 2: Female-Threaded Straight-Through Impeller Flow Indicator Dimensions**
DN	L	H
10	100	70
15	100	70
20	100	70
25	100	70
32	120	80
40	120	80
50	150	100

Female-threaded impeller flow indicator dimensional drawing.

Female-threaded impeller flow indicator front view.

**Table 3:** **Female-Threaded Impeller Flow Indicator Connection Dimensions**
DN	L	L1	H	N-ØZ
15	100	35	70	4-M8
20	100	35	70	4-M8
25	100	35	70	4-M8
32	120	42	80	4-M10
40	120	42	80	4-M10
50	160	50	100	4-M10

Flanged impeller flow indicator side dimensional drawing.

Flanged impeller flow indicator front view drawing.

**Table** 4: Flanged Impeller Flow Indicator **Connection Dimensions**
DN	L	D	D1	D2	S	N-ØZ
15	105	95	65	45	14	4-14
20	115	105	75	55	14	4-14
25	135	115	85	65	14	4-14
32	160	135	100	78	16	4-18
40	165	145	110	85	18	4-18
50	190	160	125	100	18	4-18
65	195	180	145	120	20	4-18
80	195	195	160	135	20	8-18

Features

Body material. 304 stainless steel standard; optional 316 stainless steel for corrosion resistance.
Connections. Internal threads at both ends; G1/2, G3/4, G1, and NPT available.
Flow indication. Eccentric chamber with red impeller for clear flow indication.
Viewing window. Tempered pressure-resistant glass with reliable sealing.
Media. Clean water, oils, and mildly corrosive liquids.
Installation. Suitable for horizontal and vertical pipelines.

An array of tubular gauge glass is vertically placed on the desk.

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DN	L	H
6	85	60
8	85	60
10	85	70
15	85	70
20	95	80
25	110	80
32	135	95
40	135	95
50	155	105

DN	L	H
6	85	60
8	85	60
10	85	70
15	85	70
20	95	80
25	110	80
32	135	95
40	135	95
50	155	105

DN	L	H
6	85	60
8	85	60
10	85	70
15	85	70
20	95	80
25	110	80
32	135	95
40	135	95
50	155	105