10
EXPANSION VALVES
EXPANSION VALVES
APPLICATION/ DESCRIPTION
TONS BLOCK REFRIG. LIQUID INLET
LIQUID OUTLET
SUCTION INLET
SUCTION OUTLET
PN
FIT
PTAC1600 3/8 × 1/2 × 1/2 × 5/8 2T O-Ring 2
R134a
3/8”
1/2”
1/2”
5/8”
PTAC1602 3/8 × 1/2 × 5/8 × 5/8 2T O-Ring 2
R134a
3/8”
1/2”
5/8”
5/8”
PTAC1602
PTAC1600
PTAC1611 Peterbilt 99-01 97-02
Flange 2
R134a 1/2”
5/8”
5/8”
3/4”
PTAC1612 Navistar Class 8
Flange
1.5
R134a
3/8”
1/2”
1/2”
5/8”
PTAC1612
PTAC1614
PTAC1614 Expansion Valve
O-Ring 2
R134a
3/8”
1/2”
5/8”
3/4”
Stat Seal
PTAC1619 Freightliner
1.5
R134a
3/8”
1/2”
5/8”
3/4”
PTAC1619
PTAC1621
Stat Seal
PTAC1621 Freightliner Century Columbia 02-05
1
R134a
3/8”
1/2”
5/8”
5/8”
PTAC1622 Volvo — Navistar
O-Ring 2
R134a
3/8”
1/2”
5/8”
3/4”
PTAC1622
PTAC1632
PTAC1632 Freightliner Coronado Stat Seal
2
R134a
3/8”
3/8”
5/8”
3/4”
PTAC1672
PTAC1672 Volvo — Navistar
O-Ring 2
R134a
3/8”
1/2”
5/8”
5/8”
TECH TIPS DID YOU KNOW? — The expansion valve is a refrigerant metering device that creates a temperature/ pressure drop. It also divides the system into two zones — high pressure and low pressure. The most common block valve failure is loss of gas charge inside the power element head. Plugged-up expansion valves cannot be flushed out and must be replaced. When replacing a capillary type expansion valve, make sure the capillary coil or bulb is properly attached to the outlet side of the evaporator line and well insulated with prestite insulation tape.
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