Page 164 - ParkerQuickCouplingCatalog38002010

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.
inlet
Reservoir Cooler
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
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 PS
ID
Pressure Drop (Mobil DTE 26 oil)
Features
1. Lightweight, corrosion-resistant aluminum housing.
2. Available in five shift temperatures.
3. Integral relief valve to dump excessive inlet pressures to
the reservoir.
4. 250 PSI maximum operating pressure.
5. Up to 60 GPM flow rates.
Quick Coupling Division
8145 Lewis Road • Minneapolis, MN 55427
www.parker.com/quickcouplings E-17
E
Valves
Flow Data