Master Catalog — Gems Sensors & Controls - G-8

FS-380 Series - Compact Flow Switch
for High Inline Pressures
Flow Rate Settings: 0.15 GPM to 2.00 GPM
Port Size: Multiple
Primary Construction Material: Brass or Stainless Steel
Setting Type: Fixed
These rugged inline flow switches require 100 micron filtration and are less
susceptible to clogging than other high-pressure inline flow switches. The onepiece magnetic PPS composite piston makes the FS-380 ideal for high-pressure
applications such as industrial cleaning equipment. The FS-380 is also an excellent
choice for semicon cooling applications where simple design and reliable operation
are required.

Specifications

U.L. Recognized
File No. E31926

G

EM

®

S CO PLIAN
M

T

Ro H S

Dimensions

G

Brass or 316 Stainless Steel

Piston

PPS Composite, Epoxy

Spring

316 Stainless Steel

O-Ring

Fluorocarbon

FLOW

1.16
(29.5)
2 PLCS

0.518
(13.1)

Operating Temperature

-20°F to +275°F (-28.8°C to +135°C)

Set Point Accuracy

±20% Maximum

Set Point Differential

20% Maximum

Switch*

SPST, 20VA, N.O. at no Flow

Electrical Termination

No. 22 AWG, 24˝ to 26˝ Polymeric leads

0.836
(21.2)

3/4˝ A/F HEX
4.63
(117.6)

1/4˝ and 3/8˝ Tube End Compression Fitting
24˝-26˝
LEAD WIRES
1.13
(29)

FLOW

*See " Electrical Data " on Page X-5 for more information.

1/2˝ NPT Ports

To prevent sensor to sensor magnetic field interference, follow the spacing
guidelines below.
1 1/4˝
2 3/8˝

11/16˝ HEX
4.02
(102)

0.86
(22)

24˝-26˝
LEAD WIRES
1.25
(32)

Gems FS-380

1 1/2˝

FLOW

2 13/64˝
FLOW

7/8˝ HEX
4.0
(102)

Gems FS-380

FLOW

Gems FS-380

FLOW

Gems FS-380

FLOW SWITCHES

Spacing

3/8˝ NPT Ports

FLOW

Gems FS-380

NOTE SWITCH
ORIENTATION

24˝-26˝
LEAD WIRES
Gems FS-380

1.00
(25)

FLOW

How To Order - Standard Models

3/4˝ HEX
3.45
(88)

Specify Part Number based on flow settings.
Stainless Steel

1/2˝ NPT
Male

3/8˝ NPT
Male

3/8˝ NPT
Male

0.15

-

181130

193482

259118

212136

239693

0.25

192562

168432

179992

259119

177592

239692

0.50

192563

168433

179993

259121

177593

239691

1.00

192564

168434

179994

259122

177594

239690

1.50

192566

168435

179995

-

177595

239689

2.00

192567

178353

179996

-

225525

239688

1/4˝
3/8˝
Compression Compression

0.85
(22)

Pressure Drop - Typical

Flow
Settings
GPM1

14

1/2˝ Barb

-- Stock Items.
Note:
1.	 Flow settings are calibrated using water @ 70°F on increasing flow with units in horizontal position.
Consult factory for other fluid compatibility.

12
10
PSI DROP

Brass

T

1.13
(29)

Gems FS-380

1500 PSI (107 bar); 500 PSI (34 bar) for 1/2˝ Barb Models

®

S CO PLIAN
M

24˝-26˝
LEAD WIRES

0.605
(15.4)

Operating Pressure, Maximum

EM

inch
(mm)

1/2˝ Hose Barb Fitting

Wetted Materials
Housing

G-8

Ro H S

8
6

SPRING 170342 4
1.5 + 2.0 GPM
2
SETTINGS
0
0
1
SPRING 10397
0.15 - 1.00 GPM
SETTINGS

Visit www.GemsSensors.com for most current information.

2

3

4

5

6

7

FLOW RATE - GPM

FS-380 Series / p1of1 / 15-JUL-19
Master Catalog — Gems Sensors & Controls

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