Equal percent to Linear type valve]
Equal percent to Linear type valve]
(OP)
Dear all,
Could I modify a valve from equal percent to linear by replacing cam in the positioner?
Anything else I have to do ?
thanks in advance
Hazel
Could I modify a valve from equal percent to linear by replacing cam in the positioner?
Anything else I have to do ?
thanks in advance
Hazel





RE: Equal percent to Linear type valve]
RE: Equal percent to Linear type valve]
RE: Equal percent to Linear type valve]
RE: Equal percent to Linear type valve]
The installed flow characteristic depends on:
1) the Over-sized factor
2) the Rangeability
3) the fraction of the dynamic pressure taken
by/of the control valve.
I hope this helps.
Often a linear valve (inherent) will behave like quick-opening (installed).
An equal percent valve (ihherent) will behave like a linear valve.