THR75HC-TMR100MC,XC-726HC-2B Emerson Thermo ® -Expansion valves

THR75HC-TMR100MC,XC-726HC-2B Emerson Thermo ® -Expansion valves Features

• Modular design for economical logistics and
easy assembly and servicing
• Very good stability is attained because of the
large forces generated by the large diaphragm
diameter
• High quality materials and processes for high
reliability and long lifetime
• Superior partial load performance due to double
seat orifice design (TJRE, TERE, TIRE & THRE)
• Biflow capability for applications in heat pumps
• Capillary tube length 1.5 m (TCLE, TJRE) and
3m (TERE, TIRE & THRE)
• PS: 31 bar, TS: -45 ... +65°C
• No CE marking according art. 3.3 PED 97/23 EC

Operating principles
ALCO Thermo ® -Expansion valves control the su-
perheat of refrigerant vapour at the outlet of the
evaporator. They act as a throttle device between the
high pressure and the low pressure sides of refrigera-
tion systems and ensure that the rate of refrigerant
flow into the evaporator exactly matches the rate of
evaporation of liquid refrigerant in the evaporator.
Thus the evaporator is fully utilized and no liquid
refrigerant may reach the compressor.
Description of bulb charges
The application ranges of Thermo ® -Expansion valves
are heavily influenced by the charge selected.
Liquid charges
The behaviour of Thermo ® -Expansion valves
with liquid charges is exclusively determined by
temperature changes at the bulb and not subject to
any cross-ambient interference. They feature a fast
response time and thus react quickly in the control
circuit. Liquid charges cannot incorporate MOP
functions. Maximum bulb temperatures shall not
exceed 75° C.