Valves & Accessories

A hydronic system performs only as well as the valves and accessories that control, balance, and protect it. At APT Engineering, we supply a complete range of hydronic valves and system accessories — selected from proven international manufacturers and specified as part of our integrated MEP design service — ensuring that every circuit in a building can be isolated, balanced, measured, and maintained with precision throughout its service life.

Product Range

Balancing Valves Manual and automatic balancing valves for proportional hydraulic balancing of primary and secondary circuits, AHU branches, and riser legs. Ensures each terminal unit receives its design flow regardless of load variation or pump curve.

Butterfly and Gate Isolation Valves Tight-shut-off isolation valves for maintenance of individual plant items — pumps, chillers, heat exchangers, and pressurisation units — without system shutdown. Available in wafer, lug, and flanged configurations.

Non-Return / Check Valves Swing and spring-loaded check valves to prevent reverse flow through standby pumps and through parallel circuit branches during partial-load operation.

Pressure Independent Control Valves (PICVs) Combine flow limiting, pressure regulation, and modulating control in a single valve body. Ideal for variable flow primary systems where terminal unit flows must remain constant regardless of differential pressure fluctuations across the network.

Strainers Y-type and basket strainers to protect pumps and control valves from commissioning debris and ongoing system particulate. Available in bronze and cast iron, DN15 – DN300.

Flexible Connections Braided stainless-steel or rubber-lined flexible connectors to isolate vibration and noise transmission from pumps and chillers to building pipework and structure.

Pressure and Temperature Gauges Direct-reading and digital gauges for monitoring system pressure and temperature at key measurement points throughout the distribution network.

Benefits / Features

• Fully coordinated valve schedule produced by APT's MEP design team — every valve correctly specified, sized, and located on the drawings
• All valve grades selected to match system working pressure, temperature, and fluid chemistry (including glycol-treated circuits)
• Pre-commissioning support: detailed flushing, filling, and balancing procedures matched to the valve schedule
• Manufacturer warranties and full documentation — data sheets, pressure test certificates, and material certificates with every supply package
• Single-source supply for all hydronic valves and accessories reduces procurement risk and delivery coordination