Dwyer 38R - Manual (Page 18)

Series 38R ••• Self-Acting Temperature Control Valves Operation, Installation & Maintenance Manual
Page 18
TYPICAL APPLICATIONS
Typical Heat Exchanger Application Using a Self-Op 2-Way Valve
STEAM
OR
WATER
INLET
RETURN
TO
PROCESS
FROM
PROCESS
HEAT EXCHANGER
STEAM OR WATER
RETURN
Influence
Side
Process
Side
Typical Heat Exchanger Application Using a Self-Op 3-Way Diverting Valve
Typical Plumbing for a Self-Op 3-Way Mixing Valve
HEATING
Connect Upper Port (C)
to Water / Glycol Return
and Lower Port (B)
to Heat Exchanger
COOLING
Connect Upper Port (C)
to Heat Exchanger and
Lower Port (B)
to Water / Glycol Return
WATER/GLYCOL
RETURN
Common Port
(A)
Lower Port
(B)
Upper Port
(C)
Common
Port
(A)
BLENDED
WATER
OUT
TO
PROCESS
COLD
WATER
IN
FROM
PROCESS
RETURN
TO
PROCESS
Influence
Side
Process
Side
HEAT EXCHANGER
HEATING
Use an Direct-Acting Valve
COOLING
Use an Reverse-Acting Valve