Feed Water Pump Guide Vane DG600-240-04-13 Maintenance Tips & Parts Checklist

In a large power plant, the steam-driven feed water pump is what keeps the whole generation cycle moving. The Guide Vane DG600-240-04-13 is the heart of that energy conversion; its job is to turn the kinetic energy of the water into pressure and direct the flow perfectly into the next stage impeller.

This specific model is built for 300MW, 600MW, and larger units. If the vane's shape is worn down or pitted by cavitation, the pump's efficiency will tank, and the lifespan of the entire unit will be cut short. During an overhaul, checking this guide vane for wear is the single most important way to tell if your pump is healthy or failing.

Why the Material and Design Matter

The DG600-240-04-13 is cast from high-quality, low-carbon martensitic stainless steel. This isn't just a fancy name; this material is chosen because it has to live in a world of high temperature, high pressure, and incredibly fast water flow.

Even under constant "sandblasting" from high-velocity water, it stays structurally stable. It doesn't warp or crack easily. If you ignore even tiny pits or scratches on the vane, the water flow becomes turbulent, which messes with the impeller's work and causes the whole pump to vibrate.

The Maintenance Checklist: Don't Inspect the Vane Alone

You can't just look at the guide vane and call the job done. It works in a tight "neighborhood" of parts. If the bushings are worn or the pins are loose, even a brand-new guide vane won't work right. Here is what you need to check:

The 6-Step Guide Vane Overhaul Process

1. Preparation: Shut down the pump, lock out the power, and close the valves. Make sure the pressure is completely bled off. Clean the outside of the pump so dirt doesn't fall into the clean internals.
2. Opening the Core: Follow the sequence: remove the protection caps, then the large stud bolts. Tip: Loosen the bolts in a "star pattern" to keep the pressure even.
3. Inspecting the Vane and "Friends": Pull the DG600-240-04-13 Guide Vane. Look for "pitting" or thinning edges. Check the Guide Vane Bushing and Pump Casing Bushing for over-limit clearances.
4. Cleaning: For any parts you plan to reuse, scrub off all scale, oil, and grit. Even a tiny piece of scale can throw off the alignment of the mating surfaces.
5. The Re-Assembly: Use the Cylindrical Pin to lock the guide vane into its exact position. When you put the O-ring in, use a bit of sealing grease to ensure it sits flat.
6. The Test Run: Fill the pump slowly, bleed the air, and start it up with no load. If the pressure and flow are steady and there are no leaks, you are good to go.

Maintenance Golden Rule: The quality of your guide vane overhaul decides how soon you'll have to take the pump apart again. Using original DG600-240-04-13 guide vanes and proper bushings is the only way to ensure the pump lasts until the next scheduled outage.

Dongfang SRI provides original DG600-240-04-13 guide vanes and the full kit—bushings, O-rings, pins, and all. Our technical team can even help you on-site to make sure the clearances are perfect.

HKCYT-2026-01-08