Type 2502F Controller With Reset Relief Valve - Fisher 2502 Series Level-Trol Instruction Manual

CD2114-A
CJ4081-A
C0313-1
Type 2502F Controller with Reset Relief
Valve
This construction (figure 13) has a differential relief
valve used to prevent proportional pressure from ex-
Figure 12. Direct-Acting Right-Hand-Mounted 2502-249 Series Controller
ceeding reset pressure by more than a set value, a
feature useful for intermittent control applications. Pro-
portional valve output registers in the outer chamber of
the relief valve as well as in the proportional bellows.
2502 Series
15