3A/GM3/6A/GM6 Steam Traps
Features
- Single blade element
- Stainless steel internals
- Built in strained & check valve
- Modulating discharge
- Continuous air & CO2 venting
- Fast start up capabilities
- No loss of live steam
Description
3A/GM3 Max Differential pressure - 330 PSI
6A/GM6 Max Differential pressure - 70 PSI
| Line sizes | |
| Model 3A | 3/8", 1/2", 3/4" |
| Model GM3 | 1/2", 3/4", 1", 1 1/4", 1 1/2", 2" |
| Model 6A | 3/8", 1/2", 3/4" |
| Model GM6 | 1/2", 3/4", 1", 1 1/4", 1 1/2" |
| End connections threaded (BSP, NPT) socket weld flanged | |
| Materials | |
| Body & Cover: | Forged carbon steel |
| Valve Seat: | Stainless steel |
| Valve Cone: | Stainless steel |
| Bimetal: | Stainless steel |
| Strainer: | Stainless steel |
| Gasket: | Flexible graphite |
| Mounting From horizontal to vertical. Self draining and freeze resistant when mounted in vertical position. |
|
Operation
On initial start up the steam system, large amounts of cold condensate and air are present in the system. At this point the bimetallic strip of the delta element relaxes and fully opens the valve assembly to quickly expel the high volume of non-condensate gases and cold condensate through the discharge port.
As the element senses an increase in the condensate temperature the bimetal expands and raises the stem to modulate the flow. Just below the temperature of saturated steam the seat will close tightly to prevent live steam from discharging.
Application
For fast start up and modulating discharge on process and heating, applications with differential pressures up to 70 PSI, this series of traps is designed to handle the varying conditions found in process applications with condensate loads ranging from light to heavy.
Dimensions
3A
| Size | A | B | C | D | E | Wt |
|---|---|---|---|---|---|---|
| 3/8" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
| 1/2" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
| 3/4" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
GM3
| Size | A | B | C | D | E | Wt |
|---|---|---|---|---|---|---|
| 1/2" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
| 3/4" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
| 1" | 5" | 6 3/4" | 3 5/8" | 4" | 3/14" | 9.9lb |
| 1 1/4" | 7 1/8" | 9 1/2" | 5 7/8" | 6" | 4 3/8" | 33lb |
| 1 1/2" | 7 1/8" | 9 1/2" | 5 7/8" | 6" | 4 3/8" | 33lb |
| 2" | 10 7/8" | 13 7/16" | 6 3/4" | 4 9/16" | N/A | 70lb |
6A
| Size | A | B | C | D | E | Wt |
|---|---|---|---|---|---|---|
| 3/8" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
| 1/2" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
| 3/4" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
GM6
| Size | A | B | C | D | E | Wt |
|---|---|---|---|---|---|---|
| 1/2" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
| 3/4" | 4" | 5" | 3 1/4" | 3 1/8" | 2 1/4" | 5.5lb |
| 1" | 5" | 6 3/4" | 3 5/8" | 4" | 3 1/4" | 9.9LB |
| 1 1/4" | 7 1/8" | 9 1/2" | 5 7/8" | 6" | 4 3/8" | 33lb |
| 1 1/2" | 7 1/8" | 9 1/2" | 5 7/8" | 6" | 4 3/8" | 33lb |
| 2" | 10 7/8" | 13 7/16" | 6 3/4" | 4 9/16" | N/A | 70lb |
Capacity charts: Condensate Capacity (1b/hr Pressure Differential PSI)
3A
| Size | PSI Differential | 2 | 5 | 10 | 15 | 20 | 25 | 30 |
|---|---|---|---|---|---|---|---|---|
|
3/8"
1/2" 3/4" |
Cold start up | 500 | 1000 | 1800 | 2200 | 2600 | 2900 | 3000 |
| Hot | 175 | 200 | 200 | 200 | 200 | 200 | 200 |
6A
| Size | PSI Differential | 2 | 5 | 10 | 15 | 20 | 25 | 30 |
|---|---|---|---|---|---|---|---|---|
|
3/8"
1/2" 3/4" |
Cold start up | 1200 | 1900 | 2500 | 2900 | 3300 | 3800 | 4000 |
| Hot | 130 | 160 | 190 | 200 | 210 | 220 | 230 |
GM3
| Size | PSI Differential | 2 | 5 | 10 | 15 | 20 | 25 | 30 |
|---|---|---|---|---|---|---|---|---|
| 1/2" | Start up | 1000 | 1700 | 2100 | 2500 | 2900 | 3000 | 3200 |
| 3/4" | *Hot | 500 | 700 | 750 | 750 | 750 | 750 | 750 |
| 1" |
Start
up Hot |
1800 700 |
3200 950 |
5100 1300 |
6900 1600 |
8000 1700 |
8900 1800 |
9000 2000 |
| 1 1/4" | Start up | 4000 | 7000 | 10000 | 13000 | 16000 | 18000 | 20000 |
| 1 1/2" | Hot | 2400 | 2800 | 3200 | 3700 | 3900 | 4000 | 4100 |
| 2" |
Start
up Hot |
13000 5000 |
20000 6300 |
30000 7500 |
35000 8500 |
40000 9000 |
45000 10000 |
50000 11000 |
GM6
| Size | PSI Differential | 2 | 5 | 10 | 15 | 20 | 25 | 30 |
|---|---|---|---|---|---|---|---|---|
| 1/2" | Start up | 1800 | 3000 | 3800 | 4650 | 5200 | 5800 | 6200 |
| 3/4" | *Hot | 580 | 700 | 760 | 820 | 860 | 880 | 900 |
| 1" |
Start
up Hot |
3500 1100 |
6400 1340 |
8100 1520 |
8900 1590 |
9400 1650 |
9600 1700 |
9800 1750 |
| 1 1/4" | Start up | 8000 | 14000 | 18000 | 21000 | 23000 | 25000 | 26000 |
| 1 1/2" | Hot | 3100 | 3350 | 3550 | 3700 | 3800 | 3850 | 3900 |
| 2" |
Start
up Hot |
15000 3100 |
25000 6000 |
31000 7200 |
36000 8000 |
42000 8500 |
44000 8900 |
46000 9200 |
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