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PT. Victorindo Pratama Mandiri

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Detail Produk

KSB CPK

Design

CPK pumps are horizontal, radially split single stage, single entry , back pullout type, volute casing process pumps with radial flow impeller, to EN 22858 / ISO 2858 / ISO 5199. Complemented by pumps of DN 200 and above.

Application

CPK pumps are used for pumping hot water and organic and inorganic fluids in chemical, food and other branches of industries. The application areas are Chemical, Refinery, Paper & Pulp Industries, Food Industries, Sugar Industries etc.

Pump Designation

  • Example : CPK E Y 40 250 (s)
  • Key to the designation
  • Pump type : CPK
  • Material of wetted parts : E
  • Additional designation : Y
  • Nominal size of discharge nozzle DN (mm) : 40
  • Nominal impeller diameter (mm) Suffix : 250

Material of wetted parts can be :

  1. Cast Iron : G / GC
  2. Cast Steel : E / EG / EC
  3. Stainless Steel : C / GC / EC with S.S. Impeller, EG with C.I. impeller

Additional designations can be :

  • Y Pump with intensively cooled stuffing box (refer Annexure I)
  • m Pump with mechanical seal

Suffix can be :

  • s Pump with heavy bearing bracket
  • c Pump with cooled bearing bracket

Operating Parameters

1. Capacity and total head

  • CPK pumps are available in the following range.
  • Supply frequency 50 Hz 60 Hz
  • Pump sizeDN 32 to 250 mm 32 to 250 mm
  • Capacity Q Up to 1200 m3/hr. 1500 m3/hr.
  • Total Head H Up to 150 m 220 m

2. Differential head

  • The differential head depends on the speed and impeller diameter. (Refer family curves fig. no.1 & individual performance curves).
  • Limitation of end pressure should be taken care of.

3. NPSH

The NPSH values given in the individual performance curves are the minimum values which corresponds to the cavitation limits. They are valid for water without gases. As a safety margin, committed NPSHr values must therefore be higher than that on the curve by atleast 0.5m.

In general (NPSHa-NPSHr) should be > 0.5m, and for hot water should be >1m.

The values given in the individual curves are measured values based on 3% pressure drop.

Limitations

For Q< 0.3Qopt. (where Qopt. corresponds to flow at the best efficiency point) measurement of NPSH is difficult. The values given in the NPSH curves can be fully considered. NPSH testing for Q < Qopt. Is however is not possible.

Selection of Pump

  • Selection of pump is based on -
  • Capacity : Q m3/hr.
  • Total head : H mtrs of water column
  • NPSHa : mtrs of water column
  • Pumping Liq.Temp. : 0C
  • Density : r kg/dm3
  • and several other factors like pH of liquid, solid content, viscocity etc.
  • An initial selection of the pump size can be done from the Family Curves ( Fig.1 ). The exact selection is to be finalised as per individual performance curve of the respective pump.

Family Curves

Fig. 1 shows the family curves for nominal speed at 50Hz of supply frequency. Initial selection of the pump is to be done from these curves. If the required operating speed is different from the nominal speed, then the operating parameters should be converted to the nominal speed and then the selection is to be done. The pump models shown in dotted lines are not yet developed in KSB India.

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PT. Victorindo Pratama Mandiri

Established at 2003, PT. Victorindo Pratama Mandiri started as a general supplier with palm oil mill spare parts as the main products.

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Our Office

Jalan Pulau Bunaken A3
Kawasan Industri Medan III (KIM 3) - Kota Medan
Telp. (061) 88809911 (Hunting)
E-mail. [email protected]

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