Estate Irrigation & Booster Pump System
Belvidere Park Retirement Village
Prepared by Tripple Hydro and Energy Renewables
Project Overview
Comprehensive Irrigation Solution
Tripple Hydro and Energy proposes the installation of a 75mm HDPE Estate Irrigation system to distribute borehole water across the full perimeter of Belvidere Retirement Village, including the centre garden section.
Distribution Ring
1200 metres of 75mm HDPE pipeline forming a perimeter distribution network
Connection Points
Eight structured irrigation connection points for organized access
Booster System
Three pumps with VSD control for intelligent, demand-based operation
Closed Loop Recommendation
Current Design
Open ring configuration
At security gate we propose to loop the pipeline
Recommended Enhancement
Tripple Hydro and Energy recommends consideration of a fully closed hydraulic loop at the security gate side.
  • Improved hydraulic reliability
  • Stabilized pressure across the network
  • Reduced endpoint pressure variation
  • Enhanced long-term system performance

Important Note: Material allowance is sufficient for closed loop completion. Additional labour (approximately one working day) not included. Main challenge involves opening the entrance road, installing appropriate sleeve, and reinstating road surface correctly.
System Design
Intelligent Parallel Booster Configuration
The system operates with three booster pumps configured in parallel, connected via communication links for coordinated operation. Pump staging adapts automatically based on irrigation demand.
Low Demand
One pump operates
Medium Demand
Two pumps operate
High Demand
Three pumps operate
Energy Efficient
Only required capacity activated at any time
Stable Pressure
Consistent delivery across all conditions
Reduced Stress
Lower mechanical wear extends lifespan
Hydraulic Performance Specifications
18 000
Litres Per Hour
Maximum system delivery capacity
5
Bar at Pump Station
Operating pressure at source
3
Bar at Endpoints
Pressure at furthest distribution points
600
Metres
Distance to furthest hydraulic endpoints
1200
Meters
Total Irrigation Pipeline
System Capabilities
The combined booster system delivers up to 18 m³/hour with approximately 5 bar operating pressure at the pump station.
Due to the 75mm distribution pipeline and estimated distance of ±1200 metres, pressure at the furthest distribution endpoints is expected to be approximately 3 bar—fully suitable for estate irrigation applications.
Even in the current open-ring configuration, the system provides adequate pressure delivery. Should the estate approve the closed loop connection at the security gate, hydraulic stability and pressure balancing will improve further.
Pipeline Distribution Network
The 75mm HDPE pipeline forms a comprehensive perimeter distribution ring around the estate. From this ring, 75mm saddles reduce to 32mm branch connections with 15mm dial valve outlets installed at structured connection nodes. This approach provides flexibility while maintaining hydraulic control and organized access points for estate maintenance or residents.
Operations
Irrigation Scheduling Recommendation
Although the system is capable of delivering up to 18 m³/hour, optimal performance will be achieved through structured scheduling.
Designated Blocks
Manage irrigation in organized sections
4–5 Hour Windows
Each residential block operates within defined timeframes
Avoid Simultaneous Use
Prevent full-estate irrigation at once
Benefits of Structured Scheduling
  • Stable pressure across the network
  • Efficient borehole utilization
  • Extended pump lifespan
  • Reduced operational strain on the system
Scope of Supply & Responsibilities
Tripple Hydro Provides
  • 75mm HDPE main distribution pipeline
  • Couplings, valves, fittings and saddles
  • Two 2.2kW VSD PMC Booster Pumps
  • Booster pump manifold assembly
  • Pump mounting rails and brackets
  • Structural poles and concrete bases
  • Limited bush clearing allowance
  • Installation labour and travel
Estate Responsibilities
  • Trenching for 75mm pipeline installation
  • Opening and integration of existing borehole pipeline
  • Installation of road sleeve for 75mm pipe (if closed loop approved)
  • Verification that sleeve diameter accommodates 75mm pipe
  • Clearing vegetation along fence line route
Note: If vegetation clearing is not completed prior to installation, external contractors may be required at additional cost.
Investment
Project Investment Summary
Materials & Equipment
Including safety factor and applied margin
R 169,024.78
Labour
Professional installation services
R 65,000.00
Travel
Transportation and logistics
R 4,500.00
Total Project Investment
Estimated installation timeline: 8–10 working days (subject to trench readiness and civil preparation)
R 238,524.78
Excluding VAT
Key System Advantages
Intelligent Control
Staged pump control with efficient energy usage
Stable Pressure
Consistent 3–4 bar irrigation pressure range
Structured Network
Perimeter distribution with reduced pressure drop
Centralized Installation
Pump room location for noise control and easy maintenance
Scalable Infrastructure
Ready for future expansion and closed-loop upgrade