Thermodynamic Steam Traps DK
PN 40, PN 63/Class 600
Features of the DK series
•t Discharge with virtually no banking-up
•t Robust, insensitive regulator
•t Installation in any position
•t Max. admissible back pressure 80 % of the upstream pressure

Application
Type
DK 45t
t

DK 45

DK 47-Lt
DK 57-Lt

Compact steam trap
for small condensate flowrates for discharging steam lines and tracing systems
without banking-up of condensate

DK 47-Ht
DK 57-Ht

L

Rhombusline body
with enclosed, weather-resistant regulator for discharging steam lines and tracing
systems without banking-up of condensate

Compact steam trap
for large condensate flowrates for discharging steam lines and tracing systems
without banking-up of condensate

Pressure/Temperature Ratings
PN / Class

∆PMX

DK 45

PN 40

[bar]
32

DK 47

PN 63 / Class 600

42

1.40272) A743-CA40

63.0

400

50.0 / 300

42.0 / 400

DK 57

PN 63 / Class 600

42

1.40212)

63.0

400

50.0 / 300

42.0 / 400

Type

Material
EN
ASTM
1.0460

PMA
[bar]
40.0

A105
AISI420

Pressure/Temp. Rating1)
TMA
p/T
[°C]
[bar/°C]
450
27.6 / 300 13.1 / 450

1) tLimits for body/cover. Functional requirements may restrict the use to below the limits quoted.
t For full details on limiting conditions depending on end connection and type of regulator see data sheet.
2)t ASTM nearest equivalent is stated for guidance. Physical and chemical properties comply with EN.

Available End Connections and Overall Length
L

Overall length (L) in mm
DN 15
DN 20
1/2"
3/4"

Type

Connections

DK 45

Flanged EN PN 40

–

150

150

160

Flanged ASME 1501)

–

150

150

160

Flanged ASME 3001)

–

150

150

160

Screwed sockets

–

  95

  95

  95

Socket-weld (SW)

–

  95

  95

  95

DK 47

DN 10
3/8"

DN 25
1"

Butt-weld (BW)

–

200

200

200

DK 47-L

Screwed sockets

78

  78

  90

95

DK 47-H

Screwed sockets

–

  78

  90

95

DK 57-L

Screwed sockets

55

  65

  80

–

DK 57-H

Screwed sockets

–

  70

  80

90

1)

L

DK 57

16

DK 45 with flanged ASME: Overall length 172 mm on request.