Globe valves

At the same dp over the valve, we can close the pressure relieved valve with much lower force. The real benefit is that in most cases we can offer one actuator for the whole valve range.

The rangeability of a control valve expresses how stable the control characteristic of the valve is. Rangeability is a measure of the minimum controllable flow the valve is able to handle. It is defined as the ratio of maximum controllable flow to minimum controllable flow at a constant pressure drop. The higher a control ratio of a control valve, the better the control capability of the valve.

We have this information in our data sheets where it is shown dependent on DN in a technical table for every control valve. Please follow the link below.
http://district-heating.danfoss.com/products/motorised-control-valves/range/

Special stainless steel seat and cone prevents erosion and cavitation phenomena. Seat and cone are also guided what means less vibrations and better sealing.

Soft sealing valves, also known as bubble tight valves, insure no leakage which again leads to huge energy savings. No leaking is also related to no pressure loss, meaning the pump does not have to work all the time.

Patented construction of large VF3 valves DN 200; DN 250 & DN 300 have soft sealing construction and have therefore much better sealing than less performed metal to metal valve types.
Danfoss large valve have beside of main A-AB port also soft sealed B-AB port.

We have two types of actuators. One type (AMV(E) 685) has 5,000N and another one (AMV(E) 855) 15,000N.

We are just in testing procedure to proof what we think. As mentioned above, also B port is soft sealed and therefore we need to test if soft sealing will create any problems (vacuum). However we plan to make accessory as blind flange for DN 300, screws and instructions how to make 3 port valve suitable to operate as 2 port valve.