|
CONSULT FACTORY FOR ORDERING
AND PRICING
MODEL CHART - SERIES 391
| EXAMPLE |
391 |
WT |
7810 |
HF |
C1 |
70 |
|
|
391-WT-7810-C1-70 Liquid Level Control with welded
carbon steel chamber, watertight - NEMA 4X enclosure, single
pole double throw snap action switch rated 12 amp 120 VAC, 5
amp 240 VAC, foxed deadband and automatic reset, operating pressure
600 psig (41 bar) at 100°F (38°C), 500 psig (34 bar)
at 600°F (315°C), side/bottom process connections 1"
NPT, minimum specific gravity 0.70. |
|
| ENCLOSURE |
|
G
|
|
|
|
|
|
|
General purpose, NEMA 1. |
UL |
| |
WT |
|
|
|
|
|
|
Weatherproof, NEMA 3R, 4, 4X. |
UL |
| |
E |
|
|
|
|
|
|
Explosion-proof, Class I Groups B, C, D, Class
II Groups E, F, G, Division I and II, NEMA 7, 9. |
UL |
| |
EV |
|
|
|
|
|
|
Explosion-proof, vapor proof, Class I Groups
B, C, D, Class II Groups E, F, G, Division I and II, NEMA 7,
9. |
UL |
CIRCUITS
(for electrical circuits se charts A & B below) |
|
|
48XX |
|
|
|
|
|
Single stage, mercury switch, see chart A. |
|
| |
|
78XX |
|
|
|
|
|
Single stage, snap switch, see chart B. |
|
| |
|
78XXHM |
|
|
|
|
|
Hermetically sealed snap switch, see chart B. |
|
| |
|
98XX |
|
|
|
|
|
Single stage, high DC capacity snap switch,
use heat fins (HF) if process temperature exceeds 350°F (177°C),
do not exceed 450°F (232°C), see chart B. |
|
| |
|
10XX |
|
|
|
|
|
Single stage, high temp. snap switch, continuous
rating shall be 800°F (425°C), 391-C1-70 type rated at
350 psig (25 bar), 391-C1-80 type rated at 450 psig (32 bar),
391-C1-95 type rated at 525 psig (37 bar). |
|
| WELDED CHAMBER CONSTRUCTION
1" NPT PROCESS CONNECTIONS |
391 |
|
|
|
C1 |
70 |
|
|
Carbon steel chamber, minimum specific gravity
0.70, 1" NPT side/bottom process connections, pressure rating
600 psig (41 bar) at 100°F (38°C), 500 psig (34 bar)
at 600°F (315°C). |
UL |
| 391 |
|
|
|
C1 |
80 |
|
|
Carbon steel chamber, minimum specific gravity
0.80, 1" NPT side/bottom process connections, pressure
rating 800 psig (55 bar) at 100°F (38°C), 650 psig
(45 bar) at 600°F (315°C). |
UL |
| 391 |
|
|
|
C1 |
95 |
|
|
Carbon steel chamber, minimum specific gravity
0.95, 1" NPT side/bottom process connections, pressure
rating 900 psig (62 bar) at 100°F (38°C), 775 psig
(53 bar) at 600°F (315°C). |
UL |
| WELDED CHAMBER CONSTRUCTION
WITH FLANGED PROCESS CONNECTIONS |
393 |
|
|
|
C1 |
170 |
|
|
1" 150# RF flanges side/bottom process connection,
pressure rating 275 psi (19 bar) at 100°F (38°C), 150
psi (10 bar) at 600°F (315°C), minimum specific gravity
0.70. |
UL |
| 393 |
|
|
|
C1 |
180 |
|
|
1" 150# RF flanges side/bottom process connection,
pressure rating 275 psi (19 bar) at 100°F (38°C), 150
psi (10 bar) at 600°F (315°C), minimum specific gravity
0.80. |
UL |
| 393 |
|
|
|
C1 |
195 |
|
|
1" 150# RF flanges side/bottom process connection,
pressure rating 275 psi (19 bar) at 100°F (38°C), 150
psi (10 bar) at 600°F (315°C), minimum specific gravity
0.95. |
UL |
| 393 |
|
|
|
C1 |
370 |
|
|
1" 300# RF flanges side/bottom process
connection, pressure rating 600 psi (41 bar) at 100°F
(38°C),
500 psi (34 bar) at 600°F (315°C), minimum specific
gravity 0.70. |
UL |
| 393 |
|
|
|
C1 |
380 |
|
|
1" 300# RF flanges side/bottom process connection,
pressure rating 720 psi (50 bar) at 100°F (38°C),
555 psi (38 bar) at 600°F (315°C), minimum specific
gravity 0.80. |
UL |
| 393 |
|
|
|
C1 |
395 |
|
|
1" 300# RF flanges side/bottom process connection,
pressure rating 720 psi (50 bar) at 100°F (38°C),
555 psi (38 bar) at 600°F (315°C), minimum specific
gravity 0.95. |
UL |
| 393 |
|
|
|
C1 |
680 |
|
|
1" 600# RF flanges side/bottom process
connection, pressure rating 800 psi (55 bar) at 100°F (38°C),
650 psi (45 bar) at 600°F (315°C), minimum specific
gravity 0.80. |
UL |
| 393 |
|
|
|
C1 |
695 |
|
|
1" 600# RF flanges side/bottom process connection,
pressure rating 900 psi (62 bar) at 100°F (38°C), 775
psi (53 bar) at 600°F (315°C), minimum specific gravity
0.95. |
UL |
| 394 |
|
|
|
C1 |
170 |
|
|
1" 150# RF flanges side/side process
connection, pressure rating 275 psi (19 bar) at 100°F
(38°C),
150 psi (10 bar) at 600°F (315°C), minimum specific
gravity 0.70. |
UL |
| 394 |
|
|
|
C1 |
180 |
|
|
1" 150# RF flanges side/side process connection,
pressure rating 275 psi (19 bar) at 100°F (38°C), 150
psi (10 bar) at 600°F (315°C), minimum specific gravity
0.80. |
UL |
| 394 |
|
|
|
C1 |
195 |
|
|
1" 150# RF flanges side/side process connection,
pressure rating 275 psi (19 bar) at 100°F (38°C), 150
psi (10 bar) at 600°F (315°C), minimum specific gravity
0.95. |
UL |
| 394 |
|
|
|
C1 |
370 |
|
|
1" 300# RF flanges side/side process
connection, pressure rating 600 psi (41 bar) at 100°F
(38°C),
500 psi (34 bar) at 600°F (315°C), minimum specific
gravity 0.70. |
UL |
| 394 |
|
|
|
C1 |
380 |
|
|
1" 300# RF flanges side/side process connection,
pressure rating 720 psi (50 bar) at 100°F (38°C),
555 psi (38 bar) at 600°F (315°C), minimum specific
gravity 0.80. |
UL |
| 394 |
|
|
|
C1 |
395 |
|
|
1" 300# RF flanges side/side process connection,
pressure rating 720 psi (50 bar) at 100°F (38°C), 555
psi (38 bar) at 600°F (315°C), minimum specific gravity
0.95. |
UL |
| 394 |
|
|
|
C1 |
680 |
|
|
1" 600# RF flanges side/side process connection,
pressure rating 800 psi (55 bar) at 100°F (38°C),
650 psi (45 bar) at 600°F (315°C), minimum specific
gravity 0.80. |
UL |
| 394 |
|
|
|
C1 |
695 |
|
|
1" 600# RF flanges side/side process connection,
pressure rating 900 psi (62 bar) at 100°F (38°C), 775
psi (53 bar) at 600°F (315°C), minimum specific gravity
0.95. |
UL |
| OPTIONS |
|
|
|
HF |
|
|
|
|
High temperature fins should be considered if
ambient temperature exceeds 500°F (260°C) for extended
periods. |
|
| |
|
|
|
|
|
H2 |
|
1" socket weld hub instead of 1" NPT. |
|
| |
|
|
|
|
|
|
12 |
Breather and drain for E type enclosure, recommended
for high humidity or outdoor service. |
|
CHARTS A & B - ELECTRICAL CIRCUITS AND RATINGS
| SWITCH TYPE |
SWITCH ACTION
|
ELECTRICAL
RATINGS IN AMPS
|
ORDERING
CODE
|
|
AC
|
DC
|
SINGLE STAGE |
TWO STAGE
|
120V
|
240V
|
440V
|
30V
|
125V
|
250V
|
LOWER
|
UPPER
|
CHART A
Mercury Contacts |
SP-ST open on level FALL |
10
|
5
|
3†
|
|
10
|
5
|
-4821
|
-4821
|
-21
|
UL
|
| SP-ST open on level RISE |
10
|
5
|
3†
|
|
10
|
5
|
-4820
|
-4820
|
-20
|
UL
|
| SP-DT one switch |
4
|
2
|
1†
|
|
4
|
2
|
-4810
|
-4810
|
-10
|
UL
|
| SP-DT two switches E.I.* |
10
|
5
|
3†
|
|
10
|
5
|
-4815
|
-4815
|
-15
|
UL
|
| DP-ST two switches E.I.* open on level FALL |
10
|
5
|
3†
|
|
10
|
5
|
-4813
|
-4813
|
-13
|
UL
|
| DP-ST two switches E.I.* open on level RISE |
10
|
5
|
3†
|
|
10
|
5
|
-4814
|
-4814
|
-14
|
UL
|
| DP-DT two SP-DT switches |
4
|
2
|
1†
|
|
4
|
2
|
-4806
|
-4806
|
-06
|
UL
|
CHART B
snap action contacts |
SP-DT one switch |
12
|
5
|
3†
|
|
0.5**
|
0.25**
|
-7810
|
-7810
|
-10
|
UL
|
| DP-DT Two SP-DT switches |
12
|
5
|
3†
|
|
0.5**
|
0.25**
|
-7806
|
-7806
|
-06
|
UL
|
| SP-DT one hermetically sealed switch |
5
|
5
|
|
5**
|
|
|
-7810HM
|
-7810HM
|
-10HM
|
|
| DP-DT two hermetically sealed SP-DT switches |
5
|
5
|
|
5**
|
|
|
-7806HM
|
-7806HM
|
-06HM
|
|
| DP-DT two SP-DT switches |
10
|
3
|
|
|
10‡
|
3‡
|
-9806
|
-9806
|
-06
|
|
| SP-DT one switch |
10
|
3
|
|
|
10‡
|
3‡
|
-9810
|
-9810
|
-10
|
|
| DP-DT two SP-DT switches |
2 |
2 |
|
|
0.4** |
0.25** |
-1006 |
-1006 |
-06 |
|
| SP-DT one switch |
2 |
2 |
|
|
0.4** |
0.25** |
-1010 |
-1010 |
-10 |
|
†Available on special order, change
1st digit in ordering code from 4 to 5 or 7 to 8, i.e., -4820 becomes
-5820, -7810 becomes -8810, etc.
‡10 amp inductive (polarized) at 125 VDC.
*Electrically Independent.
**Resistive.
|
