Objectives

The primary objective of this tender is to procure and supply 20mm water meters with restrictors for the City of uMhlathuze. The aim is to ensure the delivery of reliable, tamper-proof water meters that meet specified technical standards and facilitate efficient water management and billing.

Scope

The scope of the tender includes:

• Supply and delivery of 20mm water meters with restrictors to the specified delivery address.
• Provision of water meters that comply with detailed technical specifications, including components, construction, and performance standards.
• Inclusion of necessary accessories such as lockable meter boxes, restrictor valves, consumer ball valves, and inlet/outlet fittings.
• Technical support and sample provision for successful bidders.
• Adherence to statutory and procurement regulations, including registration with the Central Suppliers Database (CSD).

Technical Requirements

The water meters and associated components must meet the following technical specifications:

Water Meter Specifications

• Type: Volumetric rotary piston, liquid sealed, with direct reading mechanical counter.
• Size: 20mm, Class C, conforming to NRCS 1529-1 and ISO 4064 standards.
• Flow Rates: Nominal flow rate 2.5 m³/h, maximum flow rate 5 m³/h, with accuracy ±2% in upper and transitional zones, and ±5% in lower zones.
• Durability: Suitable for water temperatures 0°C-50°C and pressures up to 16 Bar.
• Construction: Leak-proof, tamper-proof, with robust, non-magnetic, liquid sealed, and easy-to-read liquid dial counter.
• Flow Requirements: Flow measurement accuracy within specified zones, with a minimum starting flow of 5.7 l/h.
• Warranty: Minimum of 3 years.
• Pulse Output: Not required to prevent tampering.

Meter Box and Accessories

• Material: Virgin UV Stabilised UPVC for the box, UV Stabilised Engineered Grade PP for the lid.
• Design: Lockable, tamper-proof, with a protective slider window, and options for colour-coded lids and locks.
• Dimensions: Approximate height 520mm, length 265mm, width 105mm, with an extended lid height of 310mm, total height including lid approximately 790mm.
• Components: 3-way concentric restrictor valve, consumer ball valve, fusion welded PPR pipe assembly tested to 25 bar, inlet/outlet fittings compatible with HDPE pipes.
• Assembly: Elevated for maintenance, easy installation by semi-skilled labor, and compliant with pressure testing standards.

Skills Requirements

Suppliers and bidders are expected to possess the following skills and capabilities:

• Technical expertise in manufacturing or supplying water meters that meet international standards (ISO 4064, NRCS 1529-1).
• Experience in producing durable, tamper-proof, and accurate water metering solutions.
• Ability to supply complete meter boxes with lockable, tamper-proof features and accessories as specified.
• Knowledge of installation requirements and maintenance procedures for water meters and associated components.
• Registration with the Central Suppliers Database (CSD) and compliance with procurement regulations.
• Capability to provide technical support, samples, and warranty services.
• Ability to adhere to statutory requirements, including health, safety, and environmental standards.