E-20
Parker Hannifin Corporation
Quick Coupling Division
Minneapolis, MN
www.parker.com/quickcouplings
E
Valves
Thermal Bypass Valves
TH Series
Maintain Optimum Fluid Temperature
Parker’s thermal bypass valve will modulate fluid temperature
by shifting return line flow through the cooler, or bypassing it
directly to the reservoir.
Additionally, an integral pressure relief function automatically
releases excess pressure to the reservoir if the cooler becomes
restricted, and the inlet pressure becomes excessive. Relief
crack pressure settings range from 5 to 85 PSI.
These lightweight, aluminum valves are ideal for hydrostatic
drive circuits requiring fast warm-up, controlled fluid
temperatures, and low return line back pressure.
Features
•
Lightweight, corrosion-resistant aluminum housing.
•
Available in five shift temperatures.
•
Integral relief valve to dump excessive inlet pressures to
the reservoir.
• 250
PSI maximum operating pressure.
•
Up to 60 GPM flow rates.
Inlet Port over Integral Relief Valve
@ 170
°F (78 SUS Oil)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Flow in USGPM
Pressure Drop in PSID
Pressure Drop (Mobil DTE 26 oil)
Inlet Port thru Tank Port
@ 100
°F (300 SUS)
0
10
20
30
40
50
60
70
80
90
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Flow in USGPM
Pressure Drop in PSID
Inlet Port thru Cooler Port
@ 145
°F (110 SUS Oil)
0
2
4
6
8
10
12
14
16
18
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Flow in USGPM
Pressure Drop in PSID
Flow Data