KING COBRA SELECTION

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

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HOSE PUMPS COMPETITORS
Allweiler Elro Ragazzini Boyser
Iwaki Verder Bredel PCM-Delasco Watson-Marlo
w Pondorf
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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)

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HOSE LIFE TIME
5840
KING COBRA HOSE
4100
4210
3521
2850
2740
1562
1321
1680
1195
952
43 Psi
710
87 Psi
1029
575
130 Psi
398
175 Psi
215 Psi
Tests done on KCS 65 NR hose on water _at_ 70F on
continuous duty
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KING COBRAHOSE LIFE
Bredel Pump w/ Bredel Hose
Bredel Pump w/ King Cobra Hose

• Bredel SPX40
• Hose NR Bredel
• 60 rpm
• 7.5 bar-100Psi
• Continuous Duty
• Water _at_ 70C
• Bredel Setting

• Bredel SPX40
• Hose NR King Cobra
• 60 rpm
• 7.5 bar-100Psi
• Continuous duty
• Water _at_ 70C
• King Cobra Setting

Hose Life 1600 Hours
Hose Life 550 Hours
More life due to improved rectified hose and hose
re-enforcement technology
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HOW TO SELECTKING COBRA PUMPS
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PUMP SELECTIONINFORMATION 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

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UNDERSTANDING KING COBRAPERFORMANCE CURVES
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PUMP SPEED
Pump speed is directly associated to vertical axis
Example 40 rpm for 8m3/h (35 gpm)
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MOTOR POWER
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 rpm _at_ 5 bar (73 psi), motor
power needed 4 kw for 40 rpm _at_ 15 bar (218
psi) then motor power needed 6.5 kw
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VISCOSITY LIMITS
Maximum viscosity allowed is found with the
intersection between vertical speed axis and
viscosity curve
Max viscosity allowed with vaccum assist
viscosity can be read on right vertical axis
Max viscosity allowed without vaccum assist
Example maximum viscosity allowed without
vacuum assist at 30 rpm 10,000 cps, max of
13,500 cps with vacuum assist
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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
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TEMPERATURE LIMITS
lt 40C
Temperature limits
lt 70C
Example under 5 bar (73 psi), and intermittent
service, pump is limited to 90 rpm under 40C
(104ºF) and 28 rpm under 70C (158ºF) Under 15
bar (218 psi) and 70C, pump is limited to 16 rpm
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KING COBRASELECTION EXAMPLE
Operating conditions Fluid Viscous
Sludge Fluid Tp 20C (68ºF) Viscosity 5000
cps Flow 7 m3/h (30.8 gpm) Pressure 10 bar
(145 psi) Service Continuous
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1. PUMP SELECTION
According to the flowrate, only 3 pumps are
suitable KC40, KCX40, KC65
Fluid viscous sludge Fluid Tp 20C
(68ºF) Viscosity 5000 cps Flow 7 m3/h (30.8
gpm) Pressure 10 bar (145 PSI) Service
continuous
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2. PUMP SELECTION
According to the pressure, those 3 pumps are
suitable KC40, KCX40, KC65
Fluid viscous sludge Fluid Tp 20C
(68ºF) Viscosity 5000 cps Flow 7 m3/h (30.8
gpm) Pressure 10 bar (145 PSI) Service
continuous
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3. PUMP SELECTION
According to the service, only 1 pump is suitable
KC65
Fluid viscous sludge Fluid Tp 20C
(68ºF) Viscosity 5000 cps Flow 7 m3/h (30.8
gpm) Pressure 10 bar (145 PSI) Service
continuous
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4. PUMP SELECTION
According to the viscosity, the KC65 is suitable
Fluid viscous sludge Fluid Tp 20C
(68ºF) Viscosity 5000 cps Flow 7 m3/h (30.8
gpm) Pressure 10 bar (145 PSI) Service
continuous
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5. SPEED SELECTION
According to the performance curve, pump speed
35 rpm
7 m3/h (.87 gpm)
35 rpm
Fluid viscous sludge Fluid Tp 20C
(68ºF) Viscosity 5000 cps Flow 7 m3/h (30.8
gpm) Pressure 10 bar (145 PSI) Service
continuous
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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 20C
(68ºF) Viscosity 5000 cps Flow 7 m3/h (30.8
gpm) Pressure 10 bar (145 PSI) Service
continuous