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Different Steam Trap Arrangements on Steam Headers in Piping System

In the previous post I explained different types of steam trap, in this post I will discuss about different steam trap arrangements on the steam headers running in the chemical plant.



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

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

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

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

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

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

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

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)

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″)

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