Different Steam Trap Arrangements on Steam Headers in Piping System

 


Description: Steam trap arrangement

MATERIAL LIST

ITEM

QTY

SIZE (NB)

HALF COUPLING

2

20

PIPE

1 m

20

VALVE (GATE / GLOBE)

2

20

STEAM TRAP WITH INTEGRAL STRAINER

1

20

Description: Steam trap arrangement line running at grade closed system

 

MATERIAL LIST

ITEM

QTY

SIZE (NB)

HALF COUPLING

2

20

PIPE

15 m

20

VALVE (GATE / GLOBE)

4

20

CHECK VALVE

1

20

EQUAL TEE

1

20

STEAM TRAP WITH INTEGRAL STRAINER

1

20

Description: Steam trap arrangement for overhead line open system

MATERIAL LIST

ITEM

QTY

SIZE (NB)

HALF COUPLING

2

20

PIPE

12 m

20

VALVE (GATE / GLOBE)

3

20

EQUAL TEE

1

20

STEAM TRAP WITH INTEGRAL STRAINER

1

20

Description: Steam trap arrangement for overhead line closed system

MATERIAL LIST

ITEM

QTY

SIZE (NB)

HALF COUPLING

2

20

PIPE

18 m

20

VALVE (GATE / GLOBE)

5

20

CHECK VALVE

1

20

EQUAL TEE

2

20

STEAM TRAP WITH INTEGRAL STRAINER

1

20

Description: Steam trap arrangement for steam tracer open system

MATERIAL LIST

ITEM

QTY

SIZE (NB)

EQUAL TEE

1

15

VALVE (GATE / GLOBE)

2

15

STEAM TRAP WITH INTEGRAL STRAINER

1

15

PIPE

2 m

15

Description: Steam trap arrangement for steam tracer closed system

MATERIAL LIST

ITEM

QTY

SIZE (NB)

EQUAL TEE

2

15

VALVE (GATE / GLOBE)

4

15

CHECK VALVE

1

15

STEAM TRAP WITH INTEGRAL STRAINER

1

15

PIPE

10 m

15

Description: Steam trap arrangement for grade line control valve open system

MATERIAL LIST

ITEM

QTY

SIZE (NB)

HALF COUPLING

2

20

PIPE

0.6 m

20

VALVE (GATE / GLOBE)

2

20

STEAM TRAP WITH INTEGRAL STRAINER

1

20

Description: Steam trap arrangement for grade line control valve closed system




MATERIAL LIST

ITEM

QTY

SIZE (NB)

HALF COUPLING

2

20

PIPE

15 m

20

VALVE (GATE / GLOBE)

4

20

CHECK VALVE

1

20

EQUAL TEE

1

20

STEAM TRAP WITH INTEGRAL STRAINER

1

20

 

Maximum spacing of steam traps & drip legs

 

1.      This guide is an approximation for maximum spacing of steam traps when used for condensate drawing of steam supply headers

Metres 
(feet)

2.      It is based on a condensate formation rate of 70 to 80 kg/hr (150 to 180 lb/hr) under normal running conditions for insulated steel pipe at 150c (600f) ambient temperature.

3.      During the warming up period it is possible that the condensate formation rate will on average exceed the normal formation rate by a factor of 10.

 

SATURATED STEAM PRESSURE

kg/cm2

(PSIG)

STEAM SUPPLY HEADER SIZE

MM

(INCH)

80 & UNDER 
(3″ & UNDER)

100 & 150 
(4″ & 6″)

200 & 250 
(8″ & 10″)

300 & 400
(12″ & 16″)

450 & 500
(18″ & 20″)

600 
(24″)

9 
(125)

150 
(500)

150
(500)

120
(400)

105
(350)

90
(300)

75
(250)

18
(250)

150
(500)

135
(450)

90
(300)

90
(300)

75
(250)

60
(200)

32
(450)

120
(400)

105
(350)

90
(300)

75
(250)

60
(200)

45
(150)

42
(600)

120
(400)

105
(350)

75
(250)

75
(250)

60
(200)

45
(150)

63
(900)

120
(400)

90
(300)

75
(250)

75
(250)

60
(200)

45
(150)

Description: Condensate drip leg

 

HEADER NOM. DIA 
mm 
(inch)

DRIP LEG DIMENSIONS

mm
(inch)

20

(3/4″)

20

(3/4″)

25

(1″)

25

(1″)

40

(1 1/2″)

40

(1 1/2″)

50

(2″)

50

(2″)

80

(3″)

80

(3″)

100

(4″)

100

(4″)

150

(6″)

150

(6″)

200

(8″)

150

(6″)

250

(10″)

150

(6″)

300

(12″)

150

(6″)

350

(14″)

200

(8″)

400

(16″)

200

(8″)

450

(18″)

200

(8″)

500

(20″)

200

(8″)

600

(24″)

200

(8″)

750

(30″)

250

(10″)

900

(36″)

250

(10″)

1050

(42″)

250

(10″)

1150

(46″)

250

(10″)