Flow without failure.
NextNine delivers valve solutions, leak detection and on-site leak repair for mining, water, oil & gas — cutting downtime, saving water, and keeping operations reliable.
AI & engineering tools — built for the field
Industry-grade calculators and AI-powered analysis. Assess pipe defects with a photo, calculate leak losses, size valves, and compare repair vs replacement costs.
AI Pipe & Valve Defect Analyser
Point your phone at any pipe or valve. Upload the photo and get an instant AI assessment — defect type, severity, repair recommendation, and applicable standards. On site in seconds.
Pipe Integrity Calculator
Input pipe specs to generate a 0–100 risk score and recommended action.
Assesses pipe integrity risk based on material degradation, service life, operating conditions, and environment. Generates a risk score with a recommended action.
Results range from routine monitoring to immediate carbon fibre wrap repair.
Leak Loss Estimator
Calculate the volume and financial cost of an active leak.
Uses the orifice discharge equation (Q = Cd·A·√(2P/ρ)) to calculate actual flow rate from leak geometry and line pressure.
Outputs hourly flow rate, daily and monthly volume, and full annual ZAR cost — giving you a precise financial case for immediate repair.
Carbon Fibre Wrap ROI
Compare wrap repair vs full replacement and calculate the payback period.
Compares three scenarios over the wrap design life: CF wrap repair, doing nothing, and full pipe replacement including downtime.
Outputs total savings, cost reduction %, monthly saving, and payback period in months driven by leak savings alone.
| Option | Upfront | Downtime | Leak Cost | Total |
|---|
Month Payback
Wrap cost recovered through leak savings alone.
Valve Cv / Flow Sizing
Calculate required flow coefficient and check if your valve is correctly sized.
Calculates required flow coefficient (Cv) for liquid, gas, or steam service per ISA-75.01 / IEC 60534. Flags oversized or undersized valves and recommends correct Cv with 30% margin.
Valve Leak Rate Calculator
Determine allowable seat leakage class and assess your measured leak rate.
Assigns the correct ISO 5208 / API 598 leakage class (A–D) and calculates the maximum allowable leak rate. Enter an actual measured rate for an instant pass/fail result.
Valve Integrity Risk Scorer
Score valve condition and failure probability from service history and inspection data.
Scores valve failure probability 0–100 based on age, pressure utilisation, fluid aggressiveness, cycle fatigue, condition, maintenance history, criticality, and environment.
Industries we keep flowing
From underground mining to municipal water networks, we operate wherever fluid systems are critical and downtime is costly.
Mining
Slurry lines, process water, dewatering systems, and high-pressure infrastructure across open-pit and underground operations.
Water & Wastewater
Municipal distribution networks, bulk water pipelines, treatment plants, and wastewater infrastructure.
Oil & Gas
Process pipelines, valve stations, tank farms, and refinery infrastructure requiring certified composite repair.
Pulp & Paper
Chemical process lines, black liquor systems, and steam distribution networks in paper manufacturing.
General Industry
Chemical plants, power generation, food & beverage, and any operation with critical fluid systems that cannot afford downtime.
Your Industry
Operating in a sector not listed? We work wherever fluid systems and valves are critical.
Get in touch →Specialists in valves, leaks & flow.
From the wellhead to the plant, we keep fluid systems sealed, monitored and running — purpose-built for the demands of mining and water infrastructure.
Leak detection
Acoustic and pressure-based surveys that pinpoint leaks underground and in-plant before they become failures — protecting yield, water, and your bottom line.
Carbon fibre wrap repair
On-site composite wrap repair to ASME PCC-2 and ISO 24817 — stopping leaks and restoring full pressure rating without line shutdown, in hours.
Maintenance & advisory
Planned maintenance and condition monitoring that turns reactive breakdowns into predictable, controlled upkeep — with full reporting.
Proven results in the field
Real jobs, real savings. Here's what NextNine has delivered for clients across mining and water.
Before
Straight-Line Composite Wrap — 12" White Oil Pipeline
An 823mm internal corrosion defect was found on a buried 12" white oil pipeline at a major Cape Town oil refinery, requiring excavation and scaffolding for safe access. The line was sandblasted to SA2.5 and repaired with 4 layers of Revowrap 110, engineered to ISO TS 24817 — with no refinery shutdown. With the corrosion mechanism removed, the repair carries a 20-year guarantee and the line returned to normal operating specifications.
Installed
Where Every Other Valve Failed in 3 Weeks: Ours Ran 12 Months
In August 2023 NextNine was invited on site to assess conditions where every competitor knife gate was failing, most within three weeks. The culprit: back pressure exceeding 40 bar from the extreme length and gradient of the slurry pipeline, combined with highly aggressive, erosive slurry. We supplied DN250 and DN350 heavy-duty knife gate valves with SAF2205 duplex blades, oversized double-acting actuators and twin polyurethane deflector cones. The result: 12 months of continuous operation, the best performance the mine had ever experienced.
Leak point
Leak Detection — Rand Water Bulk Supply Line
NextNine was commissioned to survey a 44km section of bulk water supply main for Rand Water. Combining satellite leak detection with an Ingu smart ball run through the inside of the live pipeline, the team identified 17 previously unknown leak points, including one major blowout risk that had gone undetected for over 18 months. Repairs were prioritised and completed within two weeks. At an approximate project cost of R1.613 million against R10.15 million in annual water losses stopped, the survey paid for itself in under two months.
Before
Composite Wrap — 12" Crude Oil Pipeline, 9m Defect
Inspection of a buried 12" crude oil pipeline (white oil service, carbon steel) at a major Cape Town oil refinery revealed a 9000mm internal corrosion defect along a straight section — a significant loss-of-containment risk. After excavation and sandblasting to SA2.5, a Revowrap 110 carbon fibre laminate was applied as a spiral wrap over a 9255mm repair length, engineered to ASME PCC-2 — restoring full structural pressure containment with no refinery shutdown required.
Delivered
Rapid Valve Supply — Magalies Water Network
A major Magalies Water network needed two DN900 butterfly valves for a critical intervention, but conventional supply channels quoted an 18-week procurement cycle. NextNine delivered both valves in just three weeks, enabling the intervention approximately 105 days earlier and safeguarding an estimated R267 million worth of bulk-water conveyance capacity. Strategic procurement and rapid execution protected critical infrastructure and preserved operational flexibility, delivering value far beyond the equipment supplied.
Before
Live Tank Repair — 300m³ Platinum Concentrator, Rustenburg
A wall thickness scan on a critical 300m³ conical flocculant tank (8m diameter, 4.7m tall) revealed severe internal corrosion and a pinhole — failure would have shut the entire plant. The tank was split into six sections, sandblasted, and wrapped bottom-to-top with impact-resistant fibreglass composite, creating a new stiffened seam to carry the tank's self-weight. The entire repair was completed under live conditions with zero production stoppage, backed by yearly inspections across its design lifetime.
Built on principles. Driven by reliability.
NextNine partners with mining and water operations to keep critical fluid systems sealed and dependable. We combine field-proven technology with unwavering principles.
Reliability
Systems that stay sealed and operations that stay up — that's the standard every job is held to.
Stewardship
Every leak found and litre saved protects a resource that matters. We treat water and yield with respect.
Relationships
Long-term partnerships built on transparency, collaboration and mutual growth — not one-off call-outs.
Find the leak before it finds you. Keep the flow, protect the yield, respect the water.— The NextNine approach
Got a leak, a valve, or a flow problem?
Tell us about your site and we'll put together a plan. We respond to every enquiry personally — usually same day.