The TBV-CMP DN25 is now available. This pressure independent balancing and control valve for small terminal units in waterborne HVAC systems extends our range of Terminal Balancing Valves.

For use in systems where modulating control is a requirement and the differential pressure needs to be stabilised as close as possible to the terminal itself, the TBV-CMP delivers reliable balancing and control. This ensures the system performs to its design specifications and in turn the client benefits from energy efficiency and therefore lower running costs as a result.

Contributing to a linear circuit characteristic, the TBV-CMP provides an efficient solution for larger systems with multiple small terminal units. It enables building services engineers to measure the flow of the system, to ensure the design flow prevails, and it can be flushed easily without the time-consuming need to remove any part of the valve.

Variable Flow systems are increasingly popular as an energy saving alternative to traditional constant flow water borne heating and cooling systems. The energy savings achieved by the reduction in pump speed in these systems are substantial. However, these savings can be lost if terminal units are not operating at the specified flow.

Inefficient terminal unit operation will lead to poor performance in the building environment, particularly in areas furthest away from the pump. The end result of this is poor perception of occupancy conditions by tenants, and increased demand on central pumps and risers as the thermostat is constantly altered, negating any savings achieved by using a variable flow system.

The DN25 delivers a manageable controllable flow range of 335 – 1330 l/h and a minimum controllable flow of 20 l/h.

Complementing the existing control valves in the range, the TBV-CMP range adds to these a balancing solution for the control of pressure independent control valves, and therefore helps system designers and consultants to deliver improved efficiency of small terminal units. Having launched the DN 15 low flow and normal flow and the DN 20 last year, the DN25 completes the range available.

Technical Documentation

Read about balancing and control of small terminal units