Layout
Vertical, centrifugal, multi-stage pumps with horizontal suction and discharge ports. In WK pumps, the first stage consists of two rotors with their inlets facing each other. The rotating unit is mounted in sliding bearings and in a rolling bearing; in the case of WK pumps it will be a Michell type sliding bearing.
The bearings are lubricated with a pumped medium flowing along the shaft, and the rolling bearings with grease or oil (Michell only oil). Shaft sealing in stuffing boxes is made using mechanical seals or sealing cords.
To balance the axial thrust, a thrust roller bearing is used in the K pumps, and a relief drum and a Michell-type plain bearing are used in the WK pumps. An integral part of the pump is the tank, which forms a hermetically sealed unit with it.
parameters
Capacity: Q = up to 1150 m3/h
Lifting height: H = up to 300 m
Design pressure: p = up to 30 bar at t = 20 °C
Temperature: t up to 165 °C
Discharge ports: Dn = from 100 mm to 300 mm
standards
API 610 / ISO 13709 (latest editions)
ATEX Directive 2014/34/EU
ANSI / ASME (#75; #150; #300) or DIN / EN (PN10, PN16; PN25; PN40) – connection ports
API682 (latest edition) – mechanical seals
Certifications
API 610 / ISO 13709
last editions
ANSI/ASME (#75; #150; #300) or DIN/EN (PN10, PN16; PN25; PN40)
connection stubs
API682 (latest edit)
mechanical seals
ATEX Directive
2014/34 / EU
Product features
- They are certified by the National Institute of Hygiene: Possibility of pumping drinking water
- Hydraulics optimization: To maximize pump efficiency
- Working slots: Secured with replaceable, high-hardness sealing rings
- Shafts protected with protective sleeves: In the area of the stuffing box and plain bearings - optimal and long-lasting operation of bearings and mechanical seals
- Stuffing boxes: Compatible with seal cooperation according to API682, latest edition
- API 610 / ISO 13709: Full compliance with the latest edition of standards
- Easy installation on the installation: Pump length from about 1,5 meters to several meters
- Axial force balance optimization: When using various design variants of relief and bearings - relief drum, relief holes, thrust bearing
- First stage rotor: With good anti-cavitation properties
Material versions
(materials according to API610 Table H.1)
|
API material class |
||||||
| Part name | S-5 | S-6 | S-8 | C-6 | A-8 | D-1 and D-2 |
| Pump body/interstage ring |
CS |
12%CR | 316L AUS | Duplex/Super Duplex | ||
| Rotor / vanes | CS | 12%Cr | AU$316 | 12%CR | 316L AUS | Duplex/Super Duplex |
| Sealing ring | 12% CR+H | 12% CR+H | 316 AUS+HF | 12% CR+H | 316L AUS +HF | Duplex / Super Duplex + H |
| Shaft | AISI 4140 | 12%CR | 316L AUS | 12%CR | Duplex | Duplex/Super Duplex |
| Bearing housing |
CS |
|||||
CI–Cast iron; CS–Cast steel/carbon steel; AISI 4140–alloy steel; 12% CR – cast steel/chrome steel; 316 AUS–Cast steel/austenitic steel >2% Mo; +H–hardened; +HF–hard faces
Possibility of making other alloys, including NACE-compliant materials.
Work field
Application examples
High pressure and high temperature applications in various industries:
- Petrochemistry
- Refineries
- Power plants and combined heat and power plants
- Heat and power plants.
