Product Overview

The SP45F Digital Lock Balance Valve is an advanced flow control valve with digital display and locking function, designed for precise hydraulic balancing in HVAC systems. It combines flow measurement, regulation, and shut-off functions in one compact unit, providing optimal system performance and energy efficiency.

Key Features

• Digital Flow Display– Clear LCD screen shows real-time flow rate (m³/h)
• Precise Balancing– ±5% accuracy for optimal system performance
• Memory Lock Function– Preset flow value can be locked to prevent unauthorized adjustment
• Low Pressure Drop– Optimized design minimizes energy consumption
• Tamper-Proof Design– Special tool required for adjustments
• Integrated Shut-Off– Built-in isolation function for maintenance
• Data Port– For connection to building management systems

Technical Specifications

Working Principle

The SP45F valve measures flow via an integrated impeller sensor, displaying real-time flow rate on the digital screen. The balancing mechanism consists of a precision-machined cone and seat that can be adjusted to achieve the desired flow rate. Once set, the locking mechanism prevents unauthorized changes while still allowing visual verification of flow. The valve maintains constant flow regardless of pressure fluctuations within its operating range.

Structural Features

• Integrated Flow Sensor– Impeller design for accurate measurement
• Adjustment Mechanism– Precision cone and seat for fine flow control
• Locking Collar– Requires special key for adjustments
• Dual-Seal Design– Ensures zero leakage in closed position
• Rugged Housing– IP65 protection for harsh environments

Applications

• HVAC chilled and hot water systems
• District heating/cooling networks
• Radiant floor heating systems
• Industrial process water systems
• Building automation systems
• Energy management systems

Installation & Maintenance

Installation Requirements

• Install in straight pipe sections (10D upstream, 5D downstream)
• Ensure flow direction matches valve arrow marking
• For vertical installation, orient display for easy reading
• Install isolation valves upstream and downstream for maintenance
• Protect from direct water spray (unless IP65 version)

Maintenance

• Check battery status annually (display shows low battery warning)
• Clean display window as needed
• Verify calibration every 2 years
• Flush system before initial operation to remove debris