Model WL

WL 80 3600 rpm
Flow 
72 - 102 Q / h 		 3000 rpm
Flow 
 60 - 90 Q / h 		 1800 rpm
Flow 
36 - 54 Q / h		 1500 rpm
Flow 
30 - 42 Q / h
Stage  Head Power  Head Power  Head Power  Head Power
2 145 - 160 m 100 Hp 95 - 115 m 50 Hp 36 - 40 m 15 Hp 23 - 28 m 7.5 Hp
3 220 - 250 m 125 Hp 145 - 165 m 75 Hp 55 - 62 m 20 Hp 36 - 41 m 10 Hp
4 290 - 325 m  200 Hp 195 - 225 m 100 Hp 72 - 80 m 25 Hp 48 - 56 m 15 Hp
5 370 - 405 m 220 Hp 245 - 275 m 125 Hp 92 - 100 m 30 Hp 61- 68 m 20 Hp
6 440 - 495 m 250 Hp 285 - 330 m 150 Hp 110 - 123 m 40 Hp 82 - 71 m 20 Hp

 

WL100 3600 rpm
Flow 
102 - 168 Q / h		 3000 rpm
Flow 
90 - 144 Q / h 		 1800 rpm
Flow 
54 - 84 Q / h 		 1500 rpm
Flow 
42 - 60 Q / h  
Stage  Head Power  Head Power  Head Power  Head Power
2 195 - 225 m 200 Hp 130 - 150 m 125 Hp 48 - 56 m 25 Hp 32 - 38 m 15 Hp
3 300 - 340 m 250 Hp 200 - 230 m 150 Hp 75 - 85 m 40 Hp 50 - 57 m 20 Hp
4 395 - 450 m 350 Hp 260 - 310 m 200 Hp 98 - 112 m 50 Hp 65 - 77 m 30 Hp
5 - - 330 - 390 m 250 Hp 121 - 140 m 60 Hp 82 - 97 m 40 Hp
6 - - 400 - 470 m 300 Hp 150 - 167 m 75 Hp 100 - 118 m 40 Hp

 

Materials

 Genaral Artesiam Well See water Food  Acid
 Casing  Cast iron Cast iron Bronze SUS 304 SUS316
 Impeller Cast iron Bronze Bronze SUS 304 SUS316
 Shaft Carbon steel Stainless Steel SUS 304 SUS 304 SUS316

 

Applications
Used for general water supply duties and in industry as a boiler feed pump and condensate pump, and also in power water, fire fighting and district heating installations for pumping of clean water.
Design
Horizontal, radially split ring section pump, single flow, multistage.  The casings are sealed by flat gaskets and held together by tie bolts.  The stage casing and the tie bolts are encased in a steel cladding.  The pump feet are arranged either below the pump or at centre line according to the number of stages and the temperature.
Bearings
The bearings are located in two bearing housings which are adjusted at both sides of the pump.
WK pumps are fitted with a cylindrical roller bearing at the suction end and with a deep groove ball bearing at the discharge end.  On construction with heavy bearing housing matched angular contact ball bearings are fitted at the discharge side in X – arrangement.
On the WL pump model, cylindrical roller bearings are fitted on both ends.
Balancing Device
WK pumps are fitted with deep groove ball bearings or angular contact ball bearings, which absorb the residual thrust by provision of balance holes, drilled in the back shrouds of the impellers.
On WL pumps the unbalanced axial thrust of the rotating assembly is absorbed by a hydraulic balancing device, consisting of balance disc and balance disc seat.
Shaft Seal
The shaft is fitted with renewable protecting sleeves in the region of the shaft seal.  The uncooled packing stuffing box can be used for operating temperatures up to 105 C ; above this figure, a cooled packing stuffing box is used, in which a supply of cooling water ensures that the temperature is kept within safe limits.  For special applications, special design of stuffing boxes or mechanical seals can be fitted as required.
Flanges
Standard construction
Suction flange :  JIS10kgf/cm2R.F.
Discharge flange : JIS20kgf/cm2R.F.
Special constructions of flanges according to ANSI, BS and other standards are available on request.
Drive
The drive is by direct coupled electric motor, using a flexible coupling.  The suction end is the drive end, and the direction of rotation is clockwise.  The stub shaft is fitted at the discharge end (in this case the direction of rotation is anticlockwise) or the pump can be fitted with a stub shaft at each end.
Materials
The following materials are used for standard material combinations :