background image

Installation 

8

312877S

Tips to Reduce Cavitation

Cavitation in a diaphragm pump is the 
formation and collapse of bubbles in the 
pumped liquid. Frequent or excessive 
cavitation can cause serious damage, 
including pitting and early wear of fluid 
chambers, balls, and seats. It may result in 
reduced efficiency of the pump. Cavitation 
damage and reduced efficiency both result in 
increased operating costs.

Cavitation depends on the vapor pressure of 
the pumped liquid, the system suction 
pressure, and the velocity pressure. It can be 
reduced by changing any of these factors.

1. Reduce vapor pressure: Decrease the 

temperature of the pumped liquid.

2. Increase suction pressure:

a. Lower the installed position of the pump 

relative to the liquid level in the supply.

b. Reduce the friction length of the suction 

piping. Remember that fittings add fric-
tion length to the piping. Reduce the 
number of fittings to reduce the friction 
length.

c. Increase the size of the suction piping.

d. Increase the Net Positive Suction Head 

(NPSH). See .

Performance Charts

page 23.

NOTE:

 Be sure the inlet fluid pressure 

does not exceed 25% of the outlet 
working pressure.

3. Reduce liquid velocity: Slow the cyclic rate 

of the pump.

Pumped liquid viscosity is also very important 
but normally is controlled by factors that are 
process dependent and cannot be changed to 
reduce cavitation. Viscous liquids are more 
difficult to pump and more prone to cavitation.

Graco recommends taking all of the above 
factors into account in system design. To 
maintain pump efficiency, supply only enough 
power to the pump to achieve the required 
flow.

Graco distributors can supply site specific 
suggestions to improve pump performance 
and reduce operating costs.

Содержание Husky 1050A

Страница 1: ...pprovals 125 psi 0 86 MPa 8 6 bar Maximum Fluid Working Pressure 125 psi 0 86 MPa 8 6 bar Maximum Air Input Pressure Center Flange ti13844a ti13843a End Flange 1050P Polypropylene 1050C Conductive Pol...

Страница 2: ...h the Pump Before First Use 16 Tighten Fasteners Before Setup 16 Starting and Adjusting the Pump 16 DataTrak Operation 17 Pump Shutdown 17 Maintenance 17 Maintenance Schedule 17 Lubrication 17 Tighten...

Страница 3: ...r Distributor Note 1 To find part numbers for new pumps or kits use the Online Husky Selector Tool 2 To find part numbers for replacement parts a Use the configuration number from the ID plate on the...

Страница 4: ...ne end flange 1050 P Polypropylene 1050 S Stainless Steel Conductive Polypropylene C01A Standard F1 PVDF center flange C01B Pulse Count F2 PVDF end flange C01C DataTrak H1 Hastelloy standard ports inc...

Страница 5: ...aint fumes in work area can ignite or explode To help prevent fire and explosion Use equipment only in well ventilated area Eliminate all ignition sources such as pilot lights cigarettes portable elec...

Страница 6: ...equipment daily Repair or replace worn or damaged parts immediately with genuine manufacturer s replacement parts only Do not alter or modify equipment Use equipment only for its intended purpose Cal...

Страница 7: ...solvents can degrade plastic parts and cause them to fail which could cause serious injury or property damage See Technical Data in this and all other equipment instruction manuals Read fluid and solv...

Страница 8: ...y b Reduce the friction length of the suction piping Remember that fittings add fric tion length to the piping Reduce the number of fittings to reduce the friction length c Increase the size of the su...

Страница 9: ...dations Fluid supply container Follow local code Solvent pails used when flushing Follow local code Use only conductive metal pails placed on a grounded surface Do not place the pail on a nonconductiv...

Страница 10: ...xible air hose A between the accessories and the 1 2 npt f pump air inlet D Use a minimum 3 8 in 10 mm ID air hose Installation of Remote Pilot Air Lines 1 Connect an air supply line to the pump A FIG...

Страница 11: ...the air exhaust hose is 3 4 in 19 mm ID If a hose longer than 15 ft 4 57 m is required use a larger diameter hose Avoid sharp bends or kinks in the hose 3 Place a container at the end of the air exha...

Страница 12: ...xcessive inlet fluid pressure also will shorten diaphragm life Approxi mately 3 5 psi 0 02 0 03 MPa 0 21 0 34 bar should be adequate for most materi als 3 For maximum suction lift wet and dry see Tech...

Страница 13: ...et Aluminum not pictured four ports Plastic FIG 4 center or end flanges available Hastelloy and stainless steel not pictured one port N Fluid outlet Aluminum not pictured four ports Plastic FIG 4 cent...

Страница 14: ...5 stainless steel 239008 and PVDF 239009 These kits include the pipe flange a PTFE gasket four 1 2 in bolts spring lock washers flat washers and nuts Be sure to lubricate the threads of the bolts and...

Страница 15: ...at or when pumping from a cool to a warm area for example from an underground tank Overpressurization also can occur if the Husky pump is used to feed fluid to a piston pump and the intake valve of th...

Страница 16: ...mped NOTE If fluid inlet pressure to the pump is more than 25 of outlet working pressure the ball check valves will not close fast enough resulting in inefficient pump operation 4 Place the end of the...

Страница 17: ...designed to require no further lubrication for the life of the pump There is no need to add an inline lubricator under normal operating conditions Tighten Threaded Connections Before each use check a...

Страница 18: ...que them using the following procedure to improve sealing NOTE Always completely torque fluid covers before torquing manifolds Start all fluid cover screws a few turns Then turn down each screw just u...

Страница 19: ...i12211b ti12213b ti14540b A 12 7 in 323 mm B 14 4 in 366 mm C 15 9 in 404 mm D 10 9 in 277 mm E 1 8 in 46 mm F 7 3 in 185 mm G 14 7 in 373 mm H 6 2 in 158 mm J 3 9 in 99 mm K 10 2 in 258 mm L 1 2 npt...

Страница 20: ...except where noted 1 0 3 LQ PP LQ PP ti13845b ti13847b ti13846b ti14541b A 13 2 in 335 mm B 15 7 in 399 mm C 17 8 in 452 mm D 12 0 in 305 mm E 2 5 in 63 5 mm F 8 0 in 203 mm G Center Flange 16 0 in 40...

Страница 21: ...b ti14345b ti14542b A 11 8 in 300 mm B 12 9 in 328 mm C 13 7 in 348 mm D 9 5 in 241 mm E 1 1 in 28 mm G 13 9 in 353 mm H 6 2 in 158 mm J 4 0 in 102 mm K 10 2 in 258 mm L 1 2 npt f air inlet M 1 in npt...

Страница 22: ...2a D A B E F L J C G C K H A 11 8 in 300 mm B 14 9 in 378 mm C 17 1 18 7 in 434 475 mm D 11 5 in 292 mm E 3 1 in 79 mm F 7 35 in 187 mm G 13 9 in 353 mm H 14 0 in 356 mm J 3 8 in 97 mm K 11 0 in 279 m...

Страница 23: ...re top chart or air consumption bottom chart 0 5 10 15 20 25 30 35 40 45 50 19 38 57 76 95 114 133 152 170 189 Fluid Flow gpm lpm 20 40 60 80 0 56 1 12 1 68 2 24 A B C D 0 0 20 40 60 80 100 120 0 14 1...

Страница 24: ...100 psi 0 7 MPa 7 0 bar and full flow 84 dBa 96 dBa Fluid temperature range see page 25 Air inlet size 1 2 npt f Fluid inlet size Aluminum 1050A Hastelloy 1050H or Stainless Steel 1050S Conductive Pol...

Страница 25: ...luid temperature range Stay within the temperature range of the most restricted wetted component Operating at a fluid temperature that is too high or too low for the components of your pump may cause...

Страница 26: ...ect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER...

Отзывы: