Spanish
Chinese
Series 401 Top Mount Float Type Level Control
Single or Two Stage for Pump or Alarm, Depth to 12', Specific Gravity to 0.50
These heavy duty top-mounted liquid level controls operate in pressurized or non-pressurized tanks and sumps with pressures to 600 psi and temperatures to 500°F. They can be ordered to operate at depths to 12 feet with a 12 foot guide rod. Adjustable in single stage and two stage operation to provide action such as operating a pump; pump and high alarm or shutdown; pump and low alarm, or high and low alarm; or high, high alarm; or low, low alarm. Alarm functions can also be used as shutdowns. Series 401 is available in mercury or snap action contact switches. Specific gravity applications from 0.5 to 1.0.
Product Applications
- Oil Refineries
- Chemical Plants
- Power Generating Stations
- Pumping Stations
- Sanitary/Waste Water Facilities
- Tanks and Vessels
Models & Ordering
Specifications
- Minimum Specific Gravity:
- See Dimensional Drawing.
- Temperature Limit:
- Ambient Temperature: 212°F (100°C); Process Temperature: -20 to 500°F (-29 to 260°C) See chart.
- Temperature Rating:
- -0°F (-9°C) to 500°F (260°C).
- Switch Type:
- Snap action or mercury.
- Electrical Rating:
- See model chart on catalog page.
- Wiring Connections:
- G, WT or E enclosure, terminal block. EV enclosure, 18" (460 mm) leads.
- Process Connection:
- Top mount flange.
- Enclosures:
- G, painted steel and aluminum; WT, painted steel, aluminum and neoprene; E, aluminum; EV, aluminum and neoprene.
- Wetted Parts:
- See Dimensional Drawing and Model Chart.
- Weights:
- Electrical head and float assembly only: G, WT 10 lb (4.5 kg); E, EV 14 lb (6.3 kg). Flange only: 49, 17 lb (7.7 kg); 59, 20 lb (9 kg); 69, 27 lb (12.3 kg); 89, 47 lb (21.3 kg). Guide rods assembly: 4 ft (1.2 m), 14 lb (6.4 kg); 8 ft (2.4 m), 28 lb (12.7 kg); 12 ft (3.6 m), 42 lb (19 kg).
- Suggested Specifications:
Liquid level control shall be top flange mounted, float operated, with (Brass)(Stainless Steel) guide rod assembly for operation to (4)(8)(12) foot depth. Float and flange shall be sized for intended specific gravity. Operation shall be 401-1 (pump), 401-2 (pump and high alarm), 401-3 (pump and low alarm), 401-4 (high and low alarm), Circuit shall be (SPST) (SPDT) (DPDT) hermetically sealed snap action (mercury) switch. Switch mechanism shall be gravity return. Enclosure shall be general purpose (weatherproof) (explosion-proof) (explosion-proof - vapor proof).
Model Chart
| EXAMPLE | 401 | 1 | G | 4810 | B | 1.0 | 40 | 1 | STW | 401-1-G-4810-B-1.0-40-1-STW Top mount Float Type Level Control, NEMA 1 enclosure, Single Stage, adjustable deadband, 3-1/2" x 6" 304SS float, 303SS rod, 316SS stop, 1.0 specific gravity, operating point 40", 5" 125# CI flange, 3-1/2" x 6"float, 4' brass guide rods, with SS tag wired. |
| SERIES | 401 | Top Mount Float Type Level Control | ||||||||
| CONSTRUCTION | 1 | Single stage with adjustable deadband | ||||||||
| 2 | Two stage, lower stage has adjustable deadband., upper stage has fixed deadband | |||||||||
| 3 | Two stage, upper stage has adjustable deadband, lower stage has fixed deadband | |||||||||
| 4 | Two stage, each stage has fixed deadband with adjustable deadband between stages | |||||||||
| ENCLOSURE | G | General Purpose, NEMA 1 | ||||||||
| WT | Weather tight, NEMA 1, 2, 3, 4, 4X | |||||||||
| E | Explosion-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G, Div. I & II; CSA approved Groups C, D, E, F, G only | |||||||||
| EV | Explosion-proof/Vapor-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G, Div. I & II | |||||||||
| CIRCUITS | 48XX | Single Stage Mercury Switch, see chart D | ||||||||
| 48XX-XX | Two Stage, Mercury Switch, see chart D | |||||||||
| 78XX | Single Stage, Snap Switch, see chart D | |||||||||
| 78XX-XX | Two Stage, Snap Switch, see chart E | |||||||||
| 78XXHM | Hermetically Sealed Snap Switch, see chart E | |||||||||
| 98XX | Single Stage, High Capacity DC Snap Switch, use heat fins (HF) if process temperature exceeds 350°F (177°C), do not exceed 450°F (232°C), see chart E | |||||||||
| 98XX-XX | Two Stage, High Capacity DC Snap Switch, use heat fins (HF) if process temperature exceeds 350°F (177°C), do not exceed 450°F (232°C), see chart E | |||||||||
| FLOAT, ROD AND STOP MATERIAL |
0 | No Float | ||||||||
| B | 3-1/2" x 6" 304SS Float, 303SS Rod, 316SS Stop | |||||||||
| C | 4-1/2" Copper Float, 303SS Rod, Brass Stop | |||||||||
| D | 4-1/2" 316SS Float, 303SS Rod, 316SS Stop | |||||||||
| E | 7" 304SS Float, 303SS Rod, 316SS Stop | |||||||||
| SPECIFIC GRAVITY |
0 | No Float, No Specific Gravity | ||||||||
| 1.0 | 1.0 Specific Gravity | |||||||||
| 0.72 | 0.72 Specific Gravity | |||||||||
| 0.62 | 0.62 Specific Gravity | |||||||||
| 0.50 | 0.50 Specific Gravity | |||||||||
| OPERATING POINT |
0 | No Float Road | ||||||||
| XX | Operating Point from 13 to 140 Inches | |||||||||
| FLANGE AND GUIDE RODS |
0 | No Flange, No Guide Rods | ||||||||
| 7 | 5" 150# CS Flange, 3-1/2" x 6" Float, 4' Brass Guide Rods | |||||||||
| 8 | 5" 150# CS Flange, 3-1/2" x 6" Float, 8' Brass Guide Rods | |||||||||
| 9 | 5" 150# CS Flange, 3-1/2" x 6" Float, 12' Brass Guide Rods | |||||||||
| 10 | 5" 150# CS Flange, 3-1/2" x 6" Float, 4' 303SS Guide Rods | |||||||||
| 11 | 5" 150# CS Flange, 3-1/2" x 6" Float, 8' 303SS Guide Rods | |||||||||
| 12 | 5" 150# CS Flange, 3-1/2" x 6" Float, 12' 303SS Guide Rods | |||||||||
| 19 | 6" 150# CS Flange, 3-1/2" x 6" Float, 4' Brass Guide Rods | |||||||||
| 20 | 6" 150# CS Flange, 3-1/2" x 6" Float, 8' Brass Guide Rods | |||||||||
| 21 | 6" 150# CS Flange, 3-1/2" x 6" Float, 12' Brass Guide Rods | |||||||||
| 22 | 6" 150# CS Flange, 3-1/2" x 6" Float, 4' 303SS Guide Rods | |||||||||
| 23 | 6" 150# CS Flange, 3-1/2" x 6" Float, 8' 303SS Guide Rods | |||||||||
| 24 | 6" 150# CS Flange, 3-1/2" x 6" Float, 12' 303SS Guide Rods | |||||||||
| 31 | 6" 150# CS Flange, 4-1/2" Float, 4' Brass Guide Rods | |||||||||
| 32 | 6" 150# CS Flange, 4-1/2" Float, 8' Brass Guide Rods | |||||||||
| 33 | 6" 150# CS Flange, 4-1/2" Float, 12' Brass Guide Rods | |||||||||
| 34 | 6" 150# CS Flange, 4-1/2" Float, 4' 303SS Guide Rods | |||||||||
| 35 | 6" 150# CS Flange, 4-1/2" Float, 8' 303SS Guide Rods | |||||||||
| 36 | 6" 150# CS Flange, 4-1/2" Float, 12' 303SS Guide Rods | |||||||||
| 64 | 6" 300# CS Flange, 4-1/2" Float, 4' 303SS Guide Rods | |||||||||
| 65 | 6" 300# CS Flange, 4-1/2" Float, 8' 303SS Guide Rods | |||||||||
| 43 | 8" 150# CS Flange, 7" Float, 4' Brass Guide Rods | |||||||||
| 44 | 8" 150# CS Flange, 7" Float, 8' Brass Guide Rods | |||||||||
| 45 | 8" 150# CS Flange, 7" Float, 12' Brass Guide Rods | |||||||||
| 46 | 8" 150# CS Flange, 7" Float, 4' 303SS Guide Rods | |||||||||
| 47 | 8" 150# CS Flange, 7" Float, 8' 303SS Guide Rods | |||||||||
| 48 | 8" 150# CS Flange, 7" Float, 12' 303SS Guide Rods | |||||||||
| OPTIONS | STW | SS Tag Wired | ||||||||
| 01 | Breather Only (E-Housing only) | |||||||||
| 02 | Drain Only (E-Housing only) | |||||||||
| 12 | Breather and Drain (E-Housing only) | |||||||||
| 14210.40 | Spec. 14210 for Sch 40 | |||||||||
| 14210.80 | Spec. 14210 for Sch 80 | |||||||||
| 23720 | Fungus Proofing |
CHART B - FLOAT, FLOAT ROD AND STOPS
|
CODE
|
SIZE
|
MATERIAL
|
PRESS/TEMP MAX
|
ROD
|
STOPS
|
|
A
|
3-1/2" X 6" (89 X 152.4 mm)
|
304SS Float
|
300 psi (21 bar)/500°F (260°C)
|
303SS
|
Brass
|
|
B
|
3-1/2" X 6" (89 X 152.4 mm)
|
304SS Float
|
300 psi (21 bar)/500°F (260°C)
|
303SS
|
316SS
|
|
C
|
4-1/2" (114 mm)
|
Copper Float
|
150 psi (10 bar)/300°F (149°C)
|
303SS
|
Brass
|
|
D
|
4-1/2" (114 mm)
|
316SS Float
|
300 psi (21 bar)/500°F (260°C)
|
303SS
|
316SS
|
|
E
|
7" (178 mm)
|
304SS Float
|
300 psi (21 bar)/500°F (260°C)
|
303SS
|
316SS
|
CHART C - FLANGE & GUIDE ROD ASSEMBLY
3-1/2" x 6" (89 x 152.4 mm) FLOAT |
4-1/2" (114 mm) FLOAT |
7" (178 mm) FLOAT |
|||||||||
CODE |
FLANGE SIZE |
GUIDE ROD |
CODE |
FLANGE SIZE |
GUIDE ROD |
CODE |
FLANGE SIZE |
GUIDE ROD |
|||
LENGTH |
MATERIAL |
LENGTH |
MATERIAL |
LENGTH |
MATERIAL |
||||||
1 |
5" 125# CI |
4' (1.2 m) |
Brass |
25 |
6" 125# CI |
4' (1.2 m) |
Brass |
37 |
8" 125# CI |
4' (1.2 m) |
Brass |
2 |
5" 125# CI |
8' (2.4 m) |
Brass |
26 |
6" 125# CI |
8' (2.4 m) |
Brass |
38 |
8" 125# CI |
8' (2.4 m) |
Brass |
3 |
5" 125# CI |
12' (3.6 m) |
Brass |
27 |
6" 125# CI |
12' (3.6 m) |
Brass |
39 |
8" 125# CI |
12' (3.6 m) |
Brass |
4 |
5" 125# CI |
4' (1.2 m) |
303SS |
28 |
6" 125# CI |
4' (1.2 m) |
303SS |
41 |
8" 125# CI |
4' (1.2 m) |
303SS |
5 |
5" 125# CI |
8' (2.4 m) |
303SS |
29 |
6" 125# CI |
8' (2.4 m) |
303SS |
41 |
8" 125# CI |
8' (2.4 m) |
303SS |
6 |
5" 125# CI |
12' (3.6 m) |
303SS |
30 |
6" 125# CI |
12' (3.6 m) |
303SS |
42 |
8" 125# CI |
12' (3.6 m) |
303SS |
7 |
5" 150# CS |
4' (1.2 m) |
Brass |
31 |
6" 150# CS |
4' (1.2 m) |
Brass |
43 |
8" 150# CS |
4' (1.2 m) |
Brass |
8 |
5" 150# CS |
8' (2.4 m) |
Brass |
32 |
6" 150# CS |
8' (2.4 m) |
Brass |
44 |
8" 150# CS |
8' (2.4 m) |
Brass |
9 |
5" 150# CS |
12' (3.6 m) |
Brass |
33 |
6" 150# CS |
12' (3.6 m) |
Brass |
45 |
8" 150# CS |
12' (3.6 m) |
Brass |
10 |
5" 150# CS |
4' (1.2 m) |
303SS |
34 |
6" 150# CS |
4' (1.2 m) |
303SS |
46 |
8" 150# CS |
4' (1.2 m) |
303SS |
11 |
5" 150# CS |
8' (2.4 m) |
303SS |
35 |
6" 150# CS |
8' (2.4 m) |
303SS |
47 |
8" 150# CS |
8' (2.4 m) |
303SS |
12 |
5" 150# CS |
12' (3.6 m) |
303SS |
36 |
6" 150# CS |
12' (3.6 m) |
303SS |
48 |
8" 150# CS |
12' (3.6 m) |
303SS |
13 |
6" 125# CI |
4' (1.2 m) |
Brass |
||||||||
14 |
6" 125# CI |
8' (2.4 m) |
Brass |
||||||||
15 |
6" 125# CI |
12' (3.6 m) |
Brass |
||||||||
16 |
6" 125# CI |
4' (1.2 m) |
303SS |
||||||||
17 |
6" 125# CI |
8' (2.4 m) |
303SS |
||||||||
18 |
6" 125# CI |
12' (3.6 m) |
303SS |
||||||||
19 |
6" 150# CS |
4' (1.2 m) |
Brass |
||||||||
20 |
6" 150# CS |
8' (2.4 m) |
Brass |
||||||||
21 |
6" 150# CS |
12' (3.6 m) |
Brass |
||||||||
22 |
6" 150# CS |
4' (1.2 m) |
303SS |
||||||||
23 |
6" 150# CS |
8' (2.4 m) |
303SS |
||||||||
24 |
6" 150# CS |
12' (3.6 m) |
303SS |
||||||||
CHARTS D & E - 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 D Mercury Contacts |
SP-ST open on level FALL | 10 |
5 |
3† |
10 |
5 |
-4820 |
-4820 |
-20 |
|
| SP-ST open on level RISE | 10 |
5 |
3† |
10 |
5 |
-4821 |
-4821 |
-21 |
||
| SP-DT one switch | 4 |
2 |
1† |
4 |
2 |
-4810 |
-4810 |
-10 |
||
| SP-DT two switches E.I.* | 10 |
5 |
3† |
10 |
5 |
-4815 |
-4815 |
-15 |
||
| DP-ST two switches E.I.* open on level FALL | 10 |
5 |
3† |
10 |
5 |
-4814 |
-4813 |
-13 |
||
| DP-ST two switches E.I.* open on level RISE | 10 |
5 |
3† |
10 |
5 |
-4813 |
-4814 |
-14 |
||
| DP-DT two SP-DT switches | 4 |
2 |
1† |
4 |
2 |
-4806 |
-4806 |
-06 |
||
| CHART E snap action contacts |
SP-DT one switch | 12 |
5 |
3† |
0.5** |
0.25** |
-7810 |
-7810 |
-10 |
|
| DP-DT two SP-DT switches | 12 |
5 |
3† |
0.5** |
0.25** |
-7806 |
-7806 |
-06 |
||
| 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 |
|||
‡10 amp inductive (polarized) at 125 VDC.
*Electrically Independent.
**Resistive.
Approvals
Drawings
Photo Downloads
You must be logged in to view this content.Click here to login to your account.
Product Reviews
Only registered users can write reviews. Please Sign in or create an account