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.
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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
-
THIS GUIDE IS AN APPROXIMATION FOR MAXIMUM SPACING OF STEAM TRAPS WHEN USED FOR CONDENSATE DRAWING OF STEAM SUPPLY HEADERS
METRES
(FEET) - 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.
- 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) |
| 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″) |