Burks 9790B Cast Iron Pump Case
The Burks 9790B is a replacement pump case in cast iron. Everything else in the wet end is located by it, so its condition sets both the running clearance around the impeller and the integrity of the pressure boundary.
A casing normally outlasts several impellers, so when one needs replacing something unusual has happened - a frozen pump, a dropped casting, corrosion from an aggressive liquid, or years of abrasive service that has cut the volute passage wider than it should be. Stripped or broken-out stud holes are the other common reason.
Casings are model specific. The same Burks family covers several port sizes and duty points on different castings, so the model designation on the nameplate is what identifies the right one. Check the suction and discharge connections against your pipework before ordering.
Key Features
- Genuine Burks replacement pump case
- Cast iron construction as originally supplied
- Built to the original Burks pattern
- Original port sizes, bolt pattern and volute geometry
- Restores the pressure boundary and the impeller clearance
- Direct replacement, no modification required
Applications
- Burks centrifugal pump rebuilds
- Replacing a casing cracked by freezing or impact
- Repairing corrosion or erosion damage inside the volute
- Recovering performance lost to a worn volute passage
- Returning a long-service pump to standard dimensions
- Industrial, marine and dockside installations
Specifications
- Brand: Burks
- Manufacturer: Crane Pumps and Systems
- Manufacturer Part Number: 9790B
- Part Type: Pump Case
- Material: Cast iron
- Condition: New
Frequently Asked Questions
Q: Can a cracked casing be welded instead?
Cast iron can be welded, but it needs preheat, the right rod and controlled cooling, and the result is a repaired pressure boundary with residual stress in it. On a pump this size the economics rarely favour it over a new casting.
Q: What should I fit at the same time?
The casing gasket or O-ring is compulsory, since the joint has to be opened. The wear ring, the impeller and the shaft seal are all worth assessing while everything is apart, because reaching them again means repeating the whole strip-down.
Q: How do I identify which casing my pump takes?
The nameplate model designation is the reliable answer. Failing that, the port sizes, the bolt pattern and the casting number on the old part together will narrow it down.
Q: Does a new casing need any machining before fitting?
No. It is supplied finished to the original Burks dimensions and goes on as it comes. What does need attention is the mating face on the adapter, which should be cleaned back to bare metal before the new gasket goes on.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct pump case before you order.
CLRMarine
