Vane Type Water Flow Switch

ZSJZ-YM-450

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Indicator Post

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Vane Type Water Flow Switch

Technical Features

Size: DN50-DN200/ 2"- 8"
Working Pressure: 450PSI
Sensitivity:
FM: 1. No-alarm flow≤15L/min
2. Alarm flow > 15L/min,≤75L /min
UL: 1. No-alarm flow≤15L /min
2. Alarm flow > 15L/min,≤37 .5L/min
Capacity of Switch Contacts:
AC 125/250V 8A
DC 24V 3A
DC 30V 2.5A
Working Temperature: 0-49°C
Steel Pipe: SCH10-40
0-90 Seconds Field Replaceable Retard

Technical Information

I. Overview
The vane type water flow switch use in wet pipe systems only. Water flow in the pipe deflects a vane, which produces a switched output usually after a specified delay.
II. Main Components
ZSJZ series water flow indicator is mainly composed of the saddle, blade rack, bottom plate, outer cover, Air delay device, micro-switch, junction box, etc.
1. The main outline drawing is shown in Figure 1 Outline Drawing.
2. Main dimensions of water flow indicator are shown in Table 1.
3. Materials of the main components are shown in Table 2.

Dimensions

Model	Specification	INCH	L	H
ZSJZ-YM-450	DN50	2"	85	188
ZSJZ-YM-450	DN65	2.5"	92	200
ZSJZ-YM-450	DN80	3"	106	220
ZSJZ-YM-450	DN100	4"	134	245
ZSJZ-YM-450	DN125	5"	162	272
ZSJZ-YM-450	DN150	6"	189.5	298
ZSJZ-YM-450	DN200	8"	240	350

Table 1

Installation and Debugging as well as Precautions

Installation of water flow indicator:
at the pre-set installation position, use a tapper to drill on the main pipeline and remove burrs according to the product specification;
roll up the blade into a small size and put it into the pipeline, install the U-shaped bolt and fasten it up with two fastening nuts, and the specific installation drawing is shown in Figure 2.

Figure 2 Installation Drawing

Materials of Main Components

0	Name	Materials
1	Body	Ductile Iron
2	Blade Rack	SS304+EPDM
3	Pottom Plate	SS304
4	Outer Covel	Aluminum
5	Air Delay Device	Component
6	Blade	LLDPE
7	Micro-switch	Component
8	Sealing Gasket	EPDM
9	Junction Box	PC