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| Flow
Switches & Sensors |
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Model
345 Electric Flow Switch
This Model is designed with a pointer for visual flow indication
and an adjustable SPDT Reed Switch to be set for desired flow
settings. A spring-loaded vane adjusts with the flow for indication.
Dial, pointer, switch are in separate housing.
· Body: Bronze
· Seals: Viton®*
O-Rings
· Window: Acrylic
| Model |
Size
NPT |
Case
Height |
Case
Width |
Overall
Width |
Rating |
Switch
Rating |
|
345 |
1/2
3/4
1
1-1/2
2 |
3-5/8
3-5/8
3-5/8
3-5/8
4-1/2 |
3-5/8
3-3/4
3-3/4
4-3/4
6-1/2 |
3-5/8
3-3/4
3-3/4
4-3/4
6-1/2 |
125
PSIG
@
200°F |
15A
@ 125V
7A @ 250V |
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Model
357 & 373 Paddle Type Flow Switch
This Model is mounted in a vertical position from a tee-mounted
in-line in a horizontal pipe system. The system pipe size can
be between 1" and 4". The paddle is trimmed to the appropriate
mark with tin snips. Line flow moves the paddle and actuates
the switch. The unit comes with No. 18 AWG 24" long polymeric
lead wires. The unit is bi-directional.
· Max Voltage is 240V.
· Max Pressure Drop: 3 PSIG
| Model |
Housing |
Paddle |
Other
Wetted |
Max
PSIG |
Max.
Temp°F |
Rating |
| 357 |
Brass |
302SS |
316SS
CeramicTeflon®*
|
2000
|
300 |
20VA
SPDT |
| 373 |
316SS |
Note:
Consult sales office for actuation and de-actuation set points.
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Model
334, 364, & 045 Shuttle Type Flow Switch
As liquid flow increases to the actuation setting, a magnet-equipped
shuttle is displaced. When displaced by fluid flow, this shuttle
actuates a hermetically sealed, SPDT 20VA reed switch within
the unit stem. A compression spring provides shuttle return
when flow decreases. Maximum temperature range for Model 045
is 200°Fand 300°F for Model 334 & 364. Seals are Viton®*.
| Model |
Sizes
NPT |
Housing |
Setting |
Range
GPM |
Operating
Pressure Rating |
| 045 |
1"
only |
Bronze |
Adjustable |
1
to 15 |
400
PSIG@
100°F |
| 334 |
1"
to 2" |
Bronze |
Fixed |
0.5
to 100 |
| 364 |
1"
to 2" |
316SS |
Fixed |
0.5
to 50 |
Note:
For Models 334 & 364 a switch setting must be specified.
|
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Model
376 & 377 Piston Type Flow Switch
These Models have fixed and adjustable flow set points
for liquids, air and gases. The repeatability is 1% maximum
deviation. Seals are Viton®*.
Maximum operating pressure is 1000 psig. Maximum operating temperature
is 300°F.
| Model |
NPT
Size |
Housing
& Piston |
Setting |
Range |
376A
376B
376C
376D |
1/2 |
Brass |
Adjustable |
0.5
to 20 GPM |
| 316SS |
| Brass |
1
to 75 SCFM or
3 to 160 SCFM |
| 316SS |
377A
377B |
1/4 |
Brass |
Fixed |
0.1,
0.25, 0.50, 0.75,
1.00,
1.50 GPM |
| 316SS |
Note:
for other Models available consult sales office.
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*Viton®
is a registered trademark of DuPont Dow Elastomers
*Teflon®
is a
registered trademark of DuPont
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Model
No. Index | Sight Flow Indicators
| Flow Meters & Totalizers | Liquid
Level Gauges & Valves | Glass &
Gaskets
Sight Windows | Switches
Flow & Level | Ejectors & Eductors
| Terms & Conditions |
Home |
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John
C. Ernst Co., Inc.
Sparta,
NJ
• Tel:
973-940-1600
• Fax:
973-940-1620
Toll Free: 1-888-463-7678
Email:
info@johnernst.com
|
Mailing
Address
21 Gail Court
Sparta, NJ 07871
|
Physical
Address
21 Gail Court
Sparta, NJ 07871
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