Nahoon Dam – 400mm Valve Replacement
Initial Machinery Diagnosis
The existing 400mm main isolation valve at the Nahoon Dam bulk water off-take suffered from severe mechanical seizure, seat degradation, and uncontrolled high-pressure bypass leakage, preventing proper hydraulic isolation of the municipal distribution feeder.
Downtime & Financial Penalties
Failure to isolate the 400mm pressurized trunk line threatened bulk water supply stability to the greater East London municipal network, risking emergency water outages for thousands of residents and commercial operations during critical distribution hours.
Technical Restoration Execution
Precision removal, rigging, and replacement of the defective 400mm heavy-duty gate valve with a new high-pressure rated unit. Our specialist engineering crew managed high-pressure system dewatering, flanged face resurfacing, new high-tensile bolting, precision alignment, and hydraulic pressure testing to verify zero-leak seal integrity under live head conditions.
Photographic & Technical Deliverables
Our certified technicians document core milestones during deployment to ensure SANS compliance, quality diagnostics, and complete stakeholder transparency.
FACE AN ISSUE LIKE THIS?
If your facility is facing unexpected electrical motor overloads, generator failures, or drop in water delivery rates, contact our emergency technical representatives immediately.
Field Photos
On-site photographic documentation from the project installation.
