High Head in One Stage
The pitot tube design gives high head at low flow in a single stage—an alternative to a multistage pump for the right feedwater duty.
The Water Side of Steam Generation
Boiler Feedwater Pumps
Low-flow, high-pressure feedwater for your boiler system. EHIK selects the pump and drive and plans the installation for changing boiler load, hot-water inlet conditions and controls.
New boiler installationsFeedwater-system upgradesPump sets & integrated skids
An Inlet-Side Mechanical Seal
The seal sits away from the high-pressure discharge. EHIK selects the seal and its support for the hot water and the real inlet conditions.
A Defined Equipment Scope
Selection, performance curves and outline drawings help your boiler team plan the operating point, the pump and drive size, and the pipework connections.
Field Reference / Anyue
Boiler Feedwater at Anyue.
EHIK pumps replaced multistage centrifugal pumps in the boiler-feedwater system at PetroChina's Anyue purification plant.
Single-Stage Pumps in an Operating Plant.
At Anyue, EHIK pump sets replaced the old multistage centrifugal pumps in a running plant's boiler-feedwater system.
The photos show the pump and drive connected to the site's feedwater piping and valves. They show what needs planning: the pump footprint, connection positions and access around the equipment.
For a new installation, EHIK selects the pump from the flow, delivery pressure, water temperature and inlet conditions, then sends outline drawings for the plant layout. For a replacement, we also check which existing equipment and connections can stay. Custom flanges can match your existing piping.
Contact EHIKSystem Connections
From Feed Tank to Boiler.
The feedwater path links the inlet supply, the pump and the delivery controls. Review them together to match the equipment to the pressure, hot water and changing boiler load.
Feed Tank / Deaerator
Water temperature, tank pressure and minimum operating level.
EHIK Pump Set
Pump, motor, coupling guard and base, selected for the feedwater duty.
Feedwater Delivery
Control valves and pipework to the economiser or boiler water inlet.
Simplified feedwater path. The final equipment and connection points follow your boiler-system design.
Engineering the Feedwater Duty
Match the Pump to the Boiler Load.
EHIK considers the operating range, inlet conditions and equipment connections in one selection. Start with the information you have; the other details can be worked out with your system team.
Flow, Pressure & Load
The pump and drive are matched to minimum, normal and maximum water demand, including start-up and low load. The selection uses the pressure needed at the delivery point, plus pipe and control-valve losses.
Tell us where pressure is measured, the duty cycle and the control method. With the system designer, these help define the allowed range and any minimum-flow arrangement.
Water & Suction Conditions
With hot feedwater, the inlet supply is a key part of the selection. Review together: normal and maximum water temperature, feed-tank or deaerator pressure, minimum water level, suction-line layout and water treatment.
The NPSHa (net positive suction head available) check uses the lowest tank level and the hottest water, including suction losses and the margin above the water's vapour pressure.
Equipment & Control Interfaces
A clear equipment scope helps plan the power supply, speed control, standby pumps, footprint and connection sizes. Instruments, feedwater controls and any recirculation are planned with the system designer.
Choose a pump set or an integrated skid. Then agree which pipework, valves, instruments and controls EHIK supplies, and where the package connects to the plant.
Boiler Feedwater FAQs
Plan the Feedwater System.
Discuss the water, the pump and the boiler together from the start.
Can the pump operate across changing boiler loads?
Yes. EHIK looks at minimum, normal and maximum demand together with the control scheme. With your system team, these decide the pump and drive, the allowed operating range and any minimum-flow provisions.
Does “boiler and steam systems” mean the pump handles steam?
No. This page is about the feedwater side of steam generation. The pump supplies water to the boiler system; it does not handle steam.
Is boiler pressure enough to select a pump?
No. We also need the feedwater flow, the pressure needed at the real delivery point, pipe and valve losses, and the inlet conditions. The pressure at the boiler, the feedwater header and the pump can differ, so it matters where it is measured.
Why do feed-tank level and water temperature matter?
They decide the pressure at the pump inlet and the NPSHa of the system. Hotter water has a higher vapour pressure, and a low tank level and suction losses reduce the margin. We check these with the proposed pump.
Can EHIK replace an existing multistage feedwater pump?
Contact EHIK for help with a feedwater-pump replacement. We review the duty, inlet conditions and fit, and propose a pitot tube pump where it suits the service. The review also covers any piping and control changes. Custom flanges can match your existing piping.
What will I receive after an inquiry?
EHIK can provide pump selection, performance curves, outline drawings and technical support. These documents help your team check the operating point, equipment size and system connections. We reply within 1 business day.
Your New Feedwater Project
From Boiler Duty to Pump Proposal.
Contact EHIK for boiler-feedwater pump selection or an upgrade. We can help assess hot-water inlet conditions and changing boiler load, and send curves and drawings for your team.
Contact EHIKUpgrading existing equipment? Contact EHIK
Pump Selection & Performance Curves
A proposed pump for your flow and pressure, with the inlet and water conditions included.
Outline Drawings & Supply Scope
Equipment size and connections, and the agreed pump-set or skid scope, for your plant layout.
Technical Support
Help with duty points, installation connections and your boiler team's questions.