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Product Groups

General Purpose Surface Pumps >> PS-Waterproof Automatic Domestic Pumps

Performance Range
Max. Head: 43m
Max. Flow Rate: 2.4 m3/h
Power: 180W, 250W, 400W

Operating Limits:
Liquid Temperature upto +40℃
Ambient Temperature: up to 40℃
Max. Working Pressure: 5.5 bar

Motor
Two-pole induction motor (n-2900 rpm)
Insulation Class B
Protection IP44

Structure Features:
Cast iron pump body
Stainless steel mechanical shaft seal (graphite to ceramic)
Brass impeller with radial peripheral blades
Superior steel or stainless steel shaft
With thermal protector for all single phase motor
Anti-rust design with brass fittings to prevent the rust from jamming the impeller (Optional)
Pump case with brass front cover are removable for easy maintenance
With plastic cover for waterproof.
Automatic turn on/off subject to the discharge pressure

Installation and Application
These pumps are suitable for handling clean water not containing abrasive particles and chemically non-aggressive fluids at temperatures of not more than 40 cent. degree. Reliable, compact, economical and simple to use, they are particularly suitable for domestic applications, such as water supply and the automatic distribution of water from storage tanks, watering gardens, lifting water from tanks or wells down to a depth of 8m. The pump is supplied with a check valve on the suction side so that no foot valve is required.
This type pump is provided with a pressure tank and a pressure switch which controls starting and stopping the pump. When the pump discharge pressure increases to a setting point (e.g.1.7 bar), the switch cuts off, and the motor stops. At the same time compressed gas in the tank forces water out of tank, when the pressure decreases to a setting point (e.g. 1.1bar), the switch cuts in and the motor restarts. A new cycle begins. This makes pump operating in a setting region.

Technical Data at n=2850 rpm

Pump Model
Power (p2)
Inlet Outlet
Pressure Switches
M3/h
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
W
Hp
inch
On
Off
l/min
0
5
10
15
20
25
30
35
40
PS-138A
180
0.24
1"x1"
1.1
1.7
H(m)
31
30
25
18
15
11
6
-
-
PS-238A
250
0.33
1"x1"
1.1
1.7
34
31
27
20
18
15
10
4
-
PS-438A
400
0.55
1"x1"
1.4
2.2
43
36
29
25
21
18.5
14
9.5
-


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