Technical brochure Thermostatic expansion valves PHT · PHT 300 1 325 1140 178 622 221 773 026H0165...

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Technical brochure

Thermostatic expansion valves

PHT

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


© 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



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



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



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


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



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




sub



Note: Insuffi cient subcooling can producefl ash gas.

Capacity

R407CCapacity in kW for range N: –40°C to +10°C

Valve typeOrifi ce

no.


2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16


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



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



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


Correctionfactor

1.00 1.08 1.14 1.21 1.27 1.33 1.39 1.45 1.51 1.57




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.


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.


2 4 6 8 10 2 4 6 8 10


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



1234112

274769 73

232330591

366495

103306422748

4173

109119345478846

4477

117128367508895

4680

120132375526925

25446469

216294531

29507582

246339612

31548189

264363655

32568392

268376678



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


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


1234112

64102165286485737

1201

87137223387628950

1515

100156253435698

10581672

108168271462738

11211765

114178286489772

11761852

5693

146240445658

1102

77125198272578853

1400

88142225330643944

1535

94152239372677993

1608

98158249394699

10291661



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


1234112

30527783

262372657

4272

107118340475832

4882

124136385533934

5188

132146406568991

5290

136150418583

1016




sub



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.


2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16


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



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



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


Correctionfactor

1.00 1.1 1.2 1.29 1.37 1.46 1.54 1.63 1.7 1.78



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 PHT · PHT 300 1 325 1140 178 622 221 773 026H0165...

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Transcript of Technical brochure Thermostatic expansion valves PHT · PHT 300 1 325 1140 178 622 221 773 026H0165...