The phrase "a valid role to" is correct and usable in written English.
It can be used when discussing the appropriateness or legitimacy of a specific role or function in a given context.
Example: "In this project, it is essential to define a valid role to ensure that all team members understand their responsibilities."
Alternatives: "an appropriate role to" or "a legitimate role to".
Psychologists have a valid role to play in keeping civil aviation safe.
Coca-Cola said: "As one of the longest, continuous sponsors of the Olympic movement, we are proud that we are able to use our sponsorship to enable millions of people to experience the Games and believe we have a valid role to play.
Kathy Crusco: To the uninitiated, "gut feel" sounds a bit scary, but instinct, intuition and even emotion do have a valid role to play in decision making.
This led to a Kulturkampf between those who thought that non-Jewish learning (i.e., philosophy) had a valid role to play in the Jewish curriculum versus those who claimed that such "foreign" works led to apostasy.
Statement from Coca-Cola: "As one of the longest, continuous sponsors of the Olympic Movement, we are proud that we are able to use our sponsorship to enable millions of people to experience the Games and believe we have a valid role to play.
"I will be explicit: you cannot, in my opinion, believe that secrecy jurisdictions like the Bahamas have a valid role when that role is to undermine the rule of law in other countries and also be UK home secretary".
How will Cuban-Americans like me finally stand up and demand to play a valid role in the Cuba of tomorrow?
In line with our RNA data, activated Notch1 shifted Sox9 protein expression from undetectable to an intermediate level in ESCs (Fig. 10A) and in 5 d differentiated embryoid bodies from an intermediate to high level expression (Fig. 10A), confirming a valid role of Notch for Sox9 regulation in both undifferentiated and differentiated cells.
Dual capitalization plans can have a valid role in acquisitions and business development, these proponents contend.
There is a valid role for tax cuts at a time of large budget surpluses, especially if they are tailored for an important purpose -- for example, helping low-income families buy health insurance.
