1. INTRODUCTION OF THE KING COBRA™
PERISTALIC HOSE PUMPS
Available:
10mm (3/8”) through 65mm (2-1/2”)

2. PRINCIPLE
Pulsation flow is generated by the pushing action of shoes on the wall of an elastomeric hose.
Shoes are assembled on a rotating wheel.
Sealing under the shoe is performed by the compression of a local area of the hose.
Frictions between shoes and hose are reduced by using a lubricant which also acts as a coolant.

3. KING COBRA ADVANTAGES Seal-less construction
Self priming pump with high suction lift up to 9m (29.5’) of water
Dry-run capable
Abrasive products
Excellent volumetric capacity (dosing)
Particles (not sharp) up to 15-25% (depending on % particles) of hose ID
Reversible pump
Ease of Maintenance

4. HOSE PUMPS COMPETITORS
Allweiler Elro Ragazzini
Boyser Iwaki Verder
Blackmer PCM-Delasco Watson-Marlow
Bredel Pondorf

5. HOSE Hose Life Depends On... Differential Pressure Rotation Speed
Hose Material
Natural Rubber (NR): 6 ; EPDM (EP): 3 ; Buna-N (BN): 2
Liquid Temperature
Service (Intermittent/Continous)
Correct Ext DN Rectifying
Correct Shimming

6. CORRECT SHIMMING
Not enough Hose compression = Internal recirculation of liqui as well as the hose being rapidly cut-off
Hose compressed too much = Unnecessary Brake Power, and Lower Hose Life
1mm extra shimming may x the hose compression by 2 (4 to 8 tons)

7. Tests done on KCS 65 NR hose on water @ 70°F on continuous duty
HOSE LIFE TIME
5840
KING COBRA HOSE
4100
4210
3521
2850
2740
1562
1680
1321
1195
952
43 Psi
710
87 Psi
1029
575
130 Psi
398
175 Psi
215 Psi
Tests done on KCS 65 NR hose on 70°F on continuous duty

8. KING COBRA HOSE LIFE Hose Life Hose Life 550 Hours 1600 Hours
Bredel Pump w/ Bredel Hose
Bredel Pump w/ King Cobra Hose
Bredel SPX40
Hose NR Bredel
60 rpm
7.5 bar-100Psi
Continuous Duty
70°C
Bredel Setting
Bredel SPX40
Hose NR – “King Cobra”
60 rpm
7.5 bar-100Psi
Continuous duty
70°C
King Cobra Setting
Hose Life
550 Hours
Hose Life
1600 Hours
More life due to improved rectified hose and hose re-enforcement technology

9. HOW TO SELECT KING COBRA™ PUMPS

10. PUMP SELECTION INFORMATION REQUIRED
Fluid Handled
Pumping Temperature
Capacity Required
Vacuum Requirements
Discharge Pressure
Duty Cycle (Start-Stop / Continuous)
Viscosity (fluid behavior)
% Solids
Maximum Particle Size
pH Level or chemical compatibility

11. UNDERSTANDING KING COBRA™ PERFORMANCE CURVES

12. PUMP SPEED Pump speed is directly associated to vertical axis
Example : 40 rpm for 8m3/h (35 gpm)

13. Motor power can be read on left vertical axis
Motor power is found with the intersection between vertical speed axis and motor power curve according to pressure
Motor power curve for 5 bar
Motor power curve for 7.5 bar
Motor power curve for 10 bar
Motor power curve for 15 bar
Motor power can be read on left vertical axis
Example : for 40 5 bar (73 psi), motor power needed = 4 kw
for bar (218 psi) then motor power needed = 6.5 kw

14. viscosity can be read on right vertical axis
VISCOSITY LIMITS
Maximum viscosity allowed is found with the intersection between vertical speed axis and viscosity curve
Max viscosity allowed with vaccum assist
Max viscosity allowed without vaccum assist
viscosity can be read on right vertical axis
Example : maximum viscosity allowed without vacuum assist at 30 rpm = 10,000 cps, max of 13,500 cps with vacuum assist

15. SERVICE
Intermittent Duty = pump is running less than 2 hours and stopped more than 1 hour
Continuous Duty = pump is running more than 2 hours or stopped less than 1 hour
Dark Grey coloured =
Intermittent service zone
Light Grey coloured = Continuous service zone
Example : at 50 rpm and below 7.5 bar (109 psi), pump can operate continuously
above 7.5 bar a (109 psi), and 50 rpm, service must be intermittent

16. TEMPERATURE LIMITS
< 40°C
Temperature limits
< 70°C
Example : under 5 bar (73 psi), and intermittent service, pump is limited to :90 rpm under 40°C (104ºF) and 28 rpm under 70°C (158ºF) Under 15 bar (218 psi) and 70°C, pump is limited to 16 rpm

17. KING COBRA™ SELECTION EXAMPLE
Operating conditions :
Fluid : Viscous Sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 psi)
Service : Continuous

18. 1. PUMP SELECTION
According to the flowrate, only 3 pumps are suitable : KC40, KCX40, KC65
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous

19. 2. PUMP SELECTION
According to the pressure, those 3 pumps are suitable : KC40, KCX40, KC65
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous

20. 3. PUMP SELECTION
According to the service, only 1 pump is suitable : KC65
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous

21. 4. PUMP SELECTION According to the viscosity, the KC65 is suitable
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous

22. 5. SPEED SELECTION
According to the performance curve, pump speed = 35 rpm
7 m3/h
(.87 gpm)
35 rpm
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous

23. 6. POWER SELECTION
According to the performance curve, motor power = 4.6 kW, you will need a 5.5 kW Motor.
4.6 kW
35 rpm
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous