technical brochure thermostatic expansion valves...
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Technical brochure Thermostatic expansion valves, type PHT
2 DKRCC.PD.AF0.A1.02-520H4538 © Danfoss A/S (AC-SMC / mr), 08 - 2010
Contents Page
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Ordering - Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Pilot orifi ce assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Valve body, fl ange gaskets, fl ange bolts and screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Thermostatic element (incl. accessory bag with screws) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Flange set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Design - Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Identifi cation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Capacity:
R22 / 407C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
R407C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
R134a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
R404A / R507. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Dimensions and weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Technical brochure Thermostatic expansion valves, type PHT
© Danfoss A/S (RA-SMC / mr), 06 - 2010 DKRCC.PD.AF0.A1.02-520H4538 3
liquid injection in ”dry“ evaporators where the superheat at the evaporator outlet is proportional to the evaporator load.
Range:–40 to +50°CEqually applicable to freezing, refrigeration and air conditioning plant.
Interchangeable orifi ce assembly- easier stocking- easy capacity matching- better service.
Very tight main orifi ceAlso used as solenoid valve (not PHT 300) - see the section "Design - Function"
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.
Patented double contact bulbFast and easy to install.Good temperature transfer from pipe to bulb.
Features
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
Introduction
Technical data RefrigerantsR22, R470C, R134a, R404A / R507
Max. temperatureBulb, when valve is installed: 100°CBulb, element not mounted: 60°C
Min. temperature–50°C
Max. test pressurePHT 85 and 125:PT = 42 bar
PHT 300:PT = 28 bar
Maximum working pressurePHT 85 and 125:PS / MWP = 28 bar
PHT 300:PS / MWP = 20 bar
SuperheatStatic superheat SS can be adjusted with setting spindle ( ).The standard superheat setting SS is 4 K.
PHT 85 1 30 105 16 55 20 69 026H1160
PHT 85 2 50 175 26 92 33 114 026H1161
PHT 85 3 80 280 39 138 52 182 026H1162
PHT 85 4 130 455 59 208 72 273 026H1163
PHT 125 1 225 790 125 438 156 545 026H1164
PHT 300 1 325 1140 178 622 221 773 026H0165
PHT 300 2 540 1890 309 1083 351 1227 026H0166
PHT 85 2 1 027N1025
PHT 85 2 11/8 027L1029 28 027L1028
PHT 85 2 13/8 027L1035 35 027L1035
PHT 125 3 A 11/4 027N1032
PHT 300 4 A 11/2 027N1040
PHT 300 4 A 2 027N1050
Technical brochure Thermostatic expansion valves, type PHT
4 DKRCC.PD.AF0.A1.02-520H4538 © Danfoss A/S (AC-SMC / mr), 08 - 2010
PHT 85
Solder or weld fl anges
Ordering
Components
1. Orifi ce assembly for pilot valve
2. Valve body, fl ange gaskets, fl ange bolts and screws
3. Thermostatic element (incl. accessory bag with
screws)
4. Flange set
1) A PHT 85 with orifi ce no. 5 and a capacity of +5 → +10% compared to orifi ce no. 4 can be ordered. The code no. is 026H1187.
2) The rated capacity for range N is based on evaporating temperature te = +5°C, condensing temperature t
c = +32°C,
and refrigerant liquid temperature ahead of valve tl = +28°C.
The rated capacity for range A is based on evaporating temperature te = +5°C, condensing temperature t
c = +42°C,
and refrigerant liquid temperature ahead of valve tl = +38°C.
See following pages for extended capacity tables.
1. Pilot orifi ce assemblyType Code no.
PHT 067B2790
2. Valve body, fl ange gaskets, fl ange bolts and screwsType Orifi ce no. Rated capacity 2)
R22/ 407CRated capacity 1)
R134aCode no.
Range N:–40 to +10°C
Range N:–40 to +10°C
Range A:+10 to +50°C
TR kW TR kW TR kW
3. Thermostatic element (incl. accessory bag)
Range Refrigerant Code no.
3 m capillary tube 5 m capillary tube
–40 to +10°C R22/ R407C 067B3303 067B3304
R22/ R407C, MOP 100 psig 067B3300 067B3306
R407C 067B3314 067B3341
R407C, MOP 95 psig 067B3311
R134a 067B3310 067B3315
R134a, MOP 55 psig 067B3316 067B3317
R404A / R507 067B3319
+10 to +50°C R134a 067B3318
4. Flange setValve fl ange Flange type Weld fl anges Solder fl anges
in. Code no. in. Code no. mm Code no.
PHT 85
Technical brochure Thermostatic expansion valves, type PHT
© Danfoss A/S (RA-SMC / mr), 06 - 2010 DKRCC.PD.AF0.A1.02-520H4538 5
1. Thermostatic element (diaphragm) 2. Interchangeable orifi ce assembly 3. Valve body 4. Superheat setting spindle (see instructions) 5. Ext. pressure equalizing connection with 1/4 in./6 mm fl are nut 6. Pilot connection 7. Insert in main valve 8. Main spring 9. Bottom plug10. Tefl on valve plate
DesignFunction
GeneralPHT valves have an interchangeable orifi ce assembly.
PHT valves are built up of three interchangeable main components:I. Thermostatic element, pos. 1II. Orifi ce assembly, pos. 2III. Valve body with connections, pos. 3 Including Insert, pos. 7
For the same valve type and refrigerant, the associated orifi ce assembly is suitable for all vers ions of valve body and in all evaporating tem pe ra tu re ranges.
The charge in the thermostatic element depends on the evaporating temperature range.
A tefl on valve plate (pos. 10) in the main valve (not PHT 300) ensures a tight main orifi ce.
All valves with external pressure equalization (pos. 5).
The double contact bulb gives fast and precise reaction to temperature changes in the evaporator. It also makes fi tting the bulb quick and easy.The valves are able to withstand the eff ects that normally occur with hot gas defrosting.
To ensure long operating life, the valve cone and seat are made of a special alloy with particularly good wear qualities.
To obtain a completely tight system an EVR 3 must be installed in the equalization line.
Identifi cation The thermostatic element is fi tted with a label (on top of the diaphragm).The code refers to the refrigerant for which the valve is designed:
X = R22 / R407C Z = R407CN = R134a S = R404a / R507
The label gives valve type, evaporating temperature range, MOP point, refrigerant, and max. test pressure, PB/MWP.
Thermostatic element label
Technical brochure Thermostatic expansion valves, type PHT
6 DKRCC.PD.AF0.A1.02-520H4538 © Danfoss A/S (AC-SMC / mr), 08 - 2010
Correction for subcooling Δt
sub
The evaporator capacities used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by
dividing the required evaporator capacity by the correction factor below. Selections can then be made from the tables above.
Note: Insuffi cient subcooling can producefl ash gas.
ExampleRefrigerant = R22Evaporator capacity Q
e = 110 kW
Subcooling = 10 K
Correction factor from table = 1.06Corrected capacity = 110 : 1.06 ≅ 104 kW
Capacity
R22 / R407CCapacity in kW for range N: –40°C to +10°C
Valve typeOrifi ce
no.
Pressure drop across valve Δp bar Pressure drop across valve Δp bar
2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16
Evaporating temperature +10°C Evaporating temperature 0°C
PHTX 85PHTX 85PHTX 85PHTX 85PHTX 125PHTX 300PHTX 300
1234112
67.3109174299518786
1290
95151244422605
10481688
112178287493695
12111935
124196316542803
13172096
133209336572876
13872202
139217349594927
14322269
142222356606957
14552302
144224360611982
14762327
56.794.4147230454671
1133
76.6131206331573887
1471
93.4153241391698
10221685
103169265432763
11101827
111180283460813
11821941
115188295480840
12161997
119194303495863
12502048
121196306500870
12712077
Evaporating temperature –10°C Evaporating temperature –20°C
PHTX 85PHTX 85PHTX 85PHTX 85PHTX 125PHTX 300PHTX 300
1234112
4678.4119153381552953
64108166231505723
1228
74.9126195276582827
1401
82.9139215310637898
1522
88.4148228334677957
1620
92.9156239350707
10021695
94.5159245361727
10341747
97.4163248368730
10401757
49.685.6129139403570990
57.899.5151165465648
1124
63.3109166187511711
1233
68.2117178205541751
1304
71.5123186215567789
1370
73.1125192230585821
1425
75.3129195234591818
1422
Evaporating temperature –30°C Evaporating temperature –40°C
PHTX 85PHTX 85PHTX 85PHTX 85PHTX 125PHTX 300PHTX 300
1234112
36.664.195.3100310429759
42.874.7112120358487862
46.881.7124134390536949
49.886.9132145413570
1011
52.291.1138153434598
1062
54.394.6144158449621
1104
55.997.4147161461627
1115
30.654
79.984.7266364655
33.659.288.595.5289399719
36.163.794.7103309430775
3866.999.7111321454820
39.469.4104115339467844
40.270.4107119340474857
Δtsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K
Correctionfactor
1.00 1.06 1.11 1.15 1.2 1.25 1.3 1.35 1.39 1.44
Technical brochure Thermostatic expansion valves, type PHT
© Danfoss A/S (RA-SMC / mr), 06 - 2010 DKRCC.PD.AF0.A1.02-520H4538 7
Correction for subcooling Δt
sub
The evaporator capacities used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by
dividing the required evaporator capacity by the correction factor below. Selections can then be made from the tables above.
Note: Insuffi cient subcooling can producefl ash gas.
Capacity
R407CCapacity in kW for range N: –40°C to +10°C
Valve typeOrifi ce
no.
Pressure drop across valve Δp bar Pressure drop across valve Δp bar
2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16
Evaporating temperature +10°C Evaporating temperature 0°C
PHTZ 85PHTZ 85PHTZ 85PHTZ 85PHTZ 125PHTZ 300PHTZ 300
1234112
70113181311539817
1342
97.9155251435623
10791739
114182293503709
12351974
125198319547811
13302117
133209336572876
13872202
136213342582908
14032227
138213345588928
14112233
138215346587943
14172234
5998
153239472698
1178
78.9135212341590914
1515
95.3156246399712
10421719
104171268436771
11211845
111180283460813
11821941
113184289470823
11921957
115188294480837
12121987
116188294480835
12201994
Evaporating temperature –10°C Evaporating temperature –20°C
PHTZ 85PHTZ 85PHTZ 85PHTZ 85PHTZ 125PHTZ 300PHTZ 300
1234112
47.881.5124159396574991
65.3110169236515737
1253
75.6127197279588835
1415
82.9139215310637898
1522
88.4148228334677957
1620
91153234343693982
1661
91.7154238350705
10031695
92.5155236350693988
1669
50.687.3132142411581
1010
58.4100152167470654
1135
63.3109166187511711
1233
67.5116176203536743
1291
69.4119180209550765
1329
70.2120184221562788
1368
70.8121183220555769
1337
Evaporating temperature –30°C Evaporating temperature –40°C
PHTZ 85PHTZ 85PHTZ 85PHTZ 85PHTZ 125PHTZ 300PHTZ 300
1234112
37.365.497.2102316438774
43.275.4113121362492871
46.380.9123133386531939
48.885.2129142405559991
50.187.5132147417574
1019
51.689.9137150427590
1049
5290.6137150429583
1037
30.654
79.984.7266364655
32.958
86.793.6283391705
34.761.290.998.9297413744
36.163.694.7105305431779
36.664.596.7107315434785
3764.898.4109313436788
Δtsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K
Correctionfactor
1.00 1.08 1.14 1.21 1.27 1.33 1.39 1.45 1.51 1.57
Technical brochure Thermostatic expansion valves, type PHT
8 DKRCC.PD.AF0.A1.02-520H4538 © Danfoss A/S (AC-SMC / mr), 08 - 2010
Correction for subcooling Δt
sub
Note: Insuffi cient subcooling can produce fl ash gas.
The evaporator capacities used must be corrected if subcooling deviates from 4 K. The corrected capacity can be obtained by dividing
the required evaporator capacity by the correction fac tor below. Selections can then be made from the tables above.
Δtsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K
Correctionfactor
1.00 1.08 1.13 1.19 1.25 1.31 1.37 1.42 1.48 1.54
R134aCapacity in kW for range N: –40°C to +10°C
Valve typeOrifi ce
no.
Pressure drop across valve Δp bar Pressure drop across valve Δp bar
2 4 6 8 10 2 4 6 8 10
Evaporating temperature +10°C Evaporating temperature 0°C
PHTN 85PHTN 85PHTN 85PHTN 85PHTN 125PHTN 300PHTN 300
1234112
4577
118169372537927
62104161239486697
1184
71118183273545775
1303
76127196293576824
1380
79131201305591842
1407
366293
102304433762
4984
128152399560974
5696
146179448625
1081
60103157197477668
1149
62106161206488686
1176
Evaporating temperature –10°C Evaporating temperature –20°C
PHTN 85PHTN 85PHTN 85PHTN 85PHTN 125PHTN 300PHTN 300
1234112
274769 73
232330591
366495
103306422748
4173
109119345478846
4477
117128367508895
4680
120132375526925
25446469
216294531
29507582
246339612
31548189
264363655
32568392
268376678
Evaporating temperature –30°C Evaporating temperature –40°C
PHTN 85PHTN 85PHTN 85PHTN 85PHTN 125PHTN 300PHTN 300
1234112
15274042
141197362
18324751
161227416
19345156
171246450
21365360
180253465
916232487
126234
1018273099
147273
12213033
108158292
12213135
112164304
Capacity
Capacity in kW for range A: +10°C to +50°CEvaporating temperature +50°C Evaporating temperature +40°C
PHTN 85PHTN 85PHTN 85PHTN 85PHTN 125PHTN 300PHTN 300
1234112
70105179324439723
1153
92138233417569790
1477
105159267472647936
1670
115172289508699
10651799
121183305535738
11601891
70107178316471778
1234
96145243426601989
1548
111166276483674
11081724
121181302524728
11961857
127190316551762
12511943
Evaporating temperature +30°C Evaporating temperature +20°C
PHTN 85PHTN 85PHTN 85PHTN 85PHTN 125PHTN 300PHTN 300
1234112
64102165286485737
1201
87137223387628950
1515
100156253435698
10581672
108168271462738
11211765
114178286489772
11761852
5693
146240445658
1102
77125198272578853
1400
88142225330643944
1535
94152239372677993
1608
98158249394699
10291661
Evaporating temperature +10°C Evaporating temperature 0°C
PHTN 85PHTN 85PHTN 85PHTN 85PHTN 125PHTN 300PHTN 300
1234112
4780
123182387563963
65109169258507730
1229
74124192292564810
1353
80132205315597859
1427
82137211325609876
1453
3866
100117324464808
5390
137178423599
1033
60103158206475669
1147
65110169225506713
1216
67113173234515731
1243
Evaporating temperature –10°C
PHTN 85PHTN 85PHTN 85PHTN 85PHTN 125PHTN 300PHTN 300
1234112
30527783
262372657
4272
107118340475832
4882
124136385533934
5188
132146406568991
5290
136150418583
1016
Technical brochure Thermostatic expansion valves, type PHT
© Danfoss A/S (RA-SMC / mr), 06 - 2010 DKRCC.PD.AF0.A1.02-520H4538 9
Correction for subcooling Δt
sub
The evaporator capacities used must be corrected if subcooling deviates from 4 K.The corrected capacity can be obtained by
dividing the required evaporator capacity by the correction factor below. Selections can then be made from the tables above.
Note: Insuffi cient subcooling can produce fl ash gas.
Capacity
R404A / R507Capacity in kW for range N: –40°C to +10°C
Valve typeOrifi ce
no.
Pressure drop across valve Δp bar Pressure drop across valve Δp bar
2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16
Evaporating temperature +10°C Evaporating temperature 0°C
PHTS 85PHTS 85PHTS 85PHTS 85PHTS 125PHTS 300PHTS 300
1234112
60.996.1156274446709
1133
84.7131215374564913
1430
98.1150245425629
10271595
107162266458671
10991702
112170278477697
11421766
115173283486706
11591788
113170278475690
11311743
110166271463670
10981691
52.986.4136227415625
1032
73.1118188313539803
1299
84.3135214356601895
1434
91145229384639951
1522
94.9150240401664990
1582
97.3155245412679
10151619
97.2153243406667995
1588
93.8148234394646645
1531
Evaporating temperature –10°C Evaporating temperature –20°C
PHTS 85PHTS 85PHTS 85PHTS 85PHTS 125PHTS 300PHTS 300
1234112
44.374.6114169362531903
61.4102157243471685
1141
70.2116179277525760
1256
75123191298556796
1315
78129199314573832
1370
79.2130202319580842
1387
79.2130200318571834
1374
76.9126194310554809
1333
48.682.8125160388553945
55.393.8143188433612
1040
59.3100153204458645
1095
61.2103158216470670
1135
62.9106162224480684
1159
62105160225473670
1136
61.1103156222464656
1113
Evaporating temperature –30°C Evaporating temperature –40°C
PHTS 85PHTS 85PHTS 85PHTS 85PHTS 125PHTS 300PHTS 300
1234112
41.972.5109118342472824
45.177.8117127361503875
46.378.9121132371516898
47.481.5122136376524911
46.580.1121133369513892
4577.5118131360507883
30.753.780
85.1259355631
32.556.985
91.9271374664
33.658.888.396.4278385685
33.758.889.798.2281395701
3459.488.297.6278384683
32.456.786.294.6271382677
Δtsub 4 K 10 K 15 K 20 K 25 K 30 K 35 K 40 K 45 K 50 K
Correctionfactor
1.00 1.1 1.2 1.29 1.37 1.46 1.54 1.63 1.7 1.78
Technical brochure Thermostatic expansion valves, type PHT
10 DKRCC.PD.AF0.A1.02-520H4538 © Danfoss A/S (AC-SMC / mr), 08 - 2010
5m capillary tube:5m capillary tube:
Dimensions and weights
PHT 85
Solder or weld fl anges
Weight
4.5 kg
PHT 300
Weld fl angesWeight
15.5 kg
Weight 9.5 kg
PHT 125
Weld fl anges
5m capillary tube:
Technical brochure Thermostatic expansion valves, type PHT
© Danfoss A/S (RA-SMC / mr), 06 - 2010 DKRCC.PD.AF0.A1.02-520H4538 11
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