Brochure
Emerson Climate Technologies
215
Mechanical Pressure Regulators
M36
3-Way Solenoid Valves Series M36
Features
For heat reclaim application
250
Correction Table
Evaporator Pressure Regulator Series PRE
Evaporator and Crankcase Pressure Regulator Series PRE and PRC
Features
• Compact design permits minimal space requirements
• Schrader valve on inlet for ease of setting
• Direct operated regulator
• Balanced port design provides accurate pressure control
• Copper tubes for easy soldering
*Nominal capacities are based on evaporating Temperature +4°C, condensing temperature +38°C and a pressure drop of 1K.
Selection for operating conditions other than +38°C/+4°C and 1 K liquid subcooling
at the inlet of the valve: Q
n
= Q
o
x K
t
Q
n
: Nominal valve capacity
Q
o
: Required cooling capacity
Technical Data
Refrigerants HFC. HCFC
Oil compatibility Mineral, Alkyl Benzene and Polyol-
Ester (POE) lubricants
Max. allowable pressure PS
Max. test pressure PT
25 bar
30 bar
Material. housing CW509L (EN12420)
Temperature range Storage -30°C to 80°C
Medium TS -30°C to 80°C
Ambient -30°C to 80°C
Pressure change per turn:
Valve size 1
Valve size 2
0.6 bar
0.4 bar
Pressure range
Factory setting
0.5 to 6.9 bar
2 bar
Weight:
PRC/PRE-1..
PRC/PRE-2..
0.6 kg
1.3 kg
Selection
Type Part No.
Tube Connection
ODF
Nominal Capacity* Q
n
(kW)
R134a R404A / R507 R407C R22
PRE - 11A 800 380 16 mm -
5
/
8
”
3.0 4.5 4.5 4.8
PRE - 11B 800 381 22 mm -
7
/
8
”
PRE - 21C 800 382 28 mm
7.4 11.1 11.1 11.9
PRE - 21D 800 383 1 -
1
/
8
”
Refrigerant
Condensing
Temperature
°C
Correction Factor K
t
Evaporating Temperature °C
+10 0 -10 -20 -30
R404A / R507
60 1.35 1.91 2.77 4.18 6.53
50 1.05 1.46 2.07 3.05 4.62
40 0.88 1.22 1.71 2.48 3.69
30 0.77 1.06 1.48 2.12 3.13
R407C
55 1.02 1.42 2.04
50 0.94 1.31 1.87
40 0.84 1.17 1.66
30 0.77 1.06 1.50
R134a
60 1.04 1.51 2.17
50 0.92 1.34 1.91
40 0.83 1.20 1.71
30 0.76 1.10 1.55
R22
60 1.02 1.37 1.87 2.67 3.91
50 0.93 1.25 1.70 2.42 3.53
40 0.86 1.15 1.57 2.22 3.23
30 0.80 1.07 1.45 2.05 2.98
250
Correction Table
Evaporator Pressure Regulator Series PRE
Evaporator and Crankcase Pressure Regulator Series PRE and PRC
Features
• Compact design permits minimal space requirements
• Schrader valve on inlet for ease of setting
• Direct operated regulator
• Balanced port design provides accurate pressure control
• Copper tubes for easy soldering
*Nominal capacities are based on evaporating Temperature +4°C, condensing temperature +38°C and a pressure drop of 1K.
Selection for operating conditions other than +38°C/+4°C and 1 K liquid subcooling
at the inlet of the valve: Q
n
= Q
o
x K
t
Q
n
: Nominal valve capacity
Q
o
: Required cooling capacity
Technical Data
Refrigerants HFC. HCFC
Oil compatibility Mineral, Alkyl Benzene and Polyol-
Ester (POE) lubricants
Max. allowable pressure PS
Max. test pressure PT
25 bar
30 bar
Material. housing CW509L (EN12420)
Temperature range Storage -30°C to 80°C
Medium TS -30°C to 80°C
Ambient -30°C to 80°C
Pressure change per turn:
Valve size 1
Valve size 2
0.6 bar
0.4 bar
Pressure range
Factory setting
0.5 to 6.9 bar
2 bar
Weight:
PRC/PRE-1..
PRC/PRE-2..
0.6 kg
1.3 kg
Selection
Type Part No.
Tube Connection
ODF
Nominal Capacity* Q
n
(kW)
R134a R404A / R507 R407C R22
PRE - 11A 800 380 16 mm -
5
/
8
”
3.0 4.5 4.5 4.8
PRE - 11B 800 381 22 mm -
7
/
8
”
PRE - 21C 800 382 28 mm
7.4 11.1 11.1 11.9
PRE - 21D 800 383 1 -
1
/
8
”
Refrigerant
Condensing
Temperature
°C
Correction Factor K
t
Evaporating Temperature °C
+10 0 -10 -20 -30
R404A / R507
60 1.35 1.91 2.77 4.18 6.53
50 1.05 1.46 2.07 3.05 4.62
40 0.88 1.22 1.71 2.48 3.69
30 0.77 1.06 1.48 2.12 3.13
R407C
55 1.02 1.42 2.04
50 0.94 1.31 1.87
40 0.84 1.17 1.66
30 0.77 1.06 1.50
R134a
60 1.04 1.51 2.17
50 0.92 1.34 1.91
40 0.83 1.20 1.71
30 0.76 1.10 1.55
R22
60 1.02 1.37 1.87 2.67 3.91
50 0.93 1.25 1.70 2.42 3.53
40 0.86 1.15 1.57 2.22 3.23
30 0.80 1.07 1.45 2.05 2.98
250
Correction Table
Evaporator Pressure Regulator Series PRE
Evaporator and Crankcase Pressure Regulator Series PRE and PRC
Features
• Compact design permits minimal space requirements
• Schrader valve on inlet for ease of setting
• Direct operated regulator
• Balanced port design provides accurate pressure control
• Copper tubes for easy soldering
*Nominal capacities are based on evaporating Temperature +4°C, condensing temperature +38°C and a pressure drop of 1K.
Selection for operating conditions other than +38°C/+4°C and 1 K liquid subcooling
at the inlet of the valve: Q
n
= Q
o
x K
t
Q
n
: Nominal valve capacity
Q
o
: Required cooling capacity
Technical Data
Refrigerants HFC. HCFC
Oil compatibility Mineral, Alkyl Benzene and Polyol-
Ester (POE) lubricants
Max. allowable pressure PS
Max. test pressure PT
25 bar
30 bar
Material. housing CW509L (EN12420)
Temperature range Storage -30°C to 80°C
Medium TS -30°C to 80°C
Ambient -30°C to 80°C
Pressure change per turn:
Valve size 1
Valve size 2
0.6 bar
0.4 bar
Pressure range
Factory setting
0.5 to 6.9 bar
2 bar
Weight:
PRC/PRE-1..
PRC/PRE-2..
0.6 kg
1.3 kg
Selection
Type Part No.
Tube Connection
ODF
Nominal Capacity* Q
n
(kW)
R134a R404A / R507 R407C R22
PRE - 11A 800 380 16 mm -
5
/
8
”
3.0 4.5 4.5 4.8
PRE - 11B 800 381 22 mm -
7
/
8
”
PRE - 21C 800 382 28 mm
7.4 11.1 11.1 11.9
PRE - 21D 800 383 1 -
1
/
8
”
Refrigerant
Condensing
Temperature
°C
Correction Factor K
t
Evaporating Temperature °C
+10 0 -10 -20 -30
R404A / R507
60 1.35 1.91 2.77 4.18 6.53
50 1.05 1.46 2.07 3.05 4.62
40 0.88 1.22 1.71 2.48 3.69
30 0.77 1.06 1.48 2.12 3.13
R407C
55 1.02 1.42 2.04
50 0.94 1.31 1.87
40 0.84 1.17 1.66
30 0.77 1.06 1.50
R134a
60 1.04 1.51 2.17
50 0.92 1.34 1.91
40 0.83 1.20 1.71
30 0.76 1.10 1.55
R22
60 1.02 1.37 1.87 2.67 3.91
50 0.93 1.25 1.70 2.42 3.53
40 0.86 1.15 1.57 2.22 3.23
30 0.80 1.07 1.45 2.05 2.98