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PHT: The parts programme make flexibility
PHT thermostatic expansion valves regulate the injection of refrigerant liquid into evaporators.
Injection is controlled by the refrigerant superheat.
Therefore the valves are especially suitable for liquid injection in ”dry“ evaporators where the superheat
at the evaporator outlet is proportional to the evaporator load.
Features
Capillary tube and sensor in
stainless steel.
Vibration proof due to the
strong capillary tube.
Laser welded thermostatic element
in stainless steel. Secure, stronger
diaphram and longer lifetime.
Easy adjustment of
superheat
Connection for
external pilot
Weld or solder flanges
Weld: 1 to 2 in.
Solder: 1 1/8 in (28 mm)
to 1 3/8 in. (35 mm)
Applications Advantages Facts
· Traditional refrigeration and freezing
applications
· Water coolers and air conditioning
· Interchangeable orifice assembly
- easier stocking
- easy capacity matching
- better service.
· Very tight main orifice
Also used as solenoid valve
(not PHT 300)
· Superheat
Static superheat SS can be adjusted
with setting spindle ().
· Permissible working pressure
- PHT 85 and 125: PS / MWP = 28 bar
- PHT 300: PS / MWP = 20 bar
· Rated capacities from 105 to 1890 kW
(30 to 540 TR) for R22
· Can be supplied with MOP
(Max. Operating Pressure)
Protects the compressor motor
against excessive evaporating pressure
· Range: –40 to +50°C
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