Coliter ® Digital Lock Balance Valve – PN16, ≤120°C, Static Hydraulic Balancing with Digital Scale & Locking for HVAC Systems

SP45F Digital Lock Balance Valve – Brass or Cast Iron Static Balance Valve with Integrated Flow Measurement Ports and Tamper-Proof Locking Mechanism

The Coliter® SP45F Digital Lock Balance Valve is a precision-engineered static balance valve designed to achieve hydraulic equilibrium in heating, cooling, and district energy systems by accurately regulating flow and pressure drop across branches. Ideal for use in industrial and civil building HVAC networks, it effectively solves the common problem of hydraulic imbalance—eliminating overheating/underheating zones and enabling significant energy savings. The valve features an intuitive digital scale display on the handwheel, allowing technicians to set and verify flow settings with high repeatability and ease during commissioning. Once adjusted, the setting can be securely locked with a tamper-proof mechanism to prevent unauthorized changes, ensuring long-term system stability. Constructed from high-quality brass (for DN≤50) or ductile iron/cast iron (for DN≥65), it is rated at PN16 (1.6 MPa) and suitable for media temperatures up to 120°C. It includes two integrated pressure/flow measurement ports (G1/4" or G3/8") compatible with standard balancing instruments for accurate flow verification and system diagnostics. Available in sizes from DN32 to DN350, with flanged end connections per GB/T 17241.6, the SP45F complies with international standards including EN 15437 and GB/T series for balancing valves. Its robust design, combined with precise adjustability and secure locking, makes it essential for radiant floor manifolds, fan coil units, air handling units, and central plant applications—delivering efficient, balanced, and maintainable hydronic performance.