Gems Sensors & Controls FS-400P Specifications
LOCKING KEYS
SLIDE OUT
TO RELEASE
BONNET
BONNET AND
SHUTTLE LIFT
OUT OF
HOUSING
HOUSING
STAYS IN
PIPING
SYSTEM
1-5/8"
(41.3 mm) DIA
3-13/16"
(96.8 mm)
1-1/2"
(38.1 mm)
BONNET
HOUSING
4-3/8"
(111.1 mm)
2-1/16"
(52.4 mm)
1
2
0
0 3 6 9 12 15 18
3
FLOW RATE - GPM
PRESSURE DROP (PSID)
Part No. 135815
Part No.135810
Tests conducted with units in vertical position (lead wires up) with water at
+70°F (21°C).
FS-400P Series – Low Cost Units for
Plastic Piping
SHUTTLE TYPE
Flow Rate Settings: 0.5 GPM or 2.0 GPM
Port Size: 3/4˝ or 1˝ IPS
Primary Construction Material: Clear PVC
Setting Type: Fixed
Designed for low cost flow/no-flow monitoring. This series is available with a clear
transparent PVC housing which is ideal for use where visual flow confirmation is
desirable. These corrosion-resistant switches offer broad chemical compatibility.
With only one moving part, their rugged construction offers long life with minimum
maintenance. Ideal for water heating or purification, equipment cooling and general
chemical processing use.
Specifications
Materials
Housing, Shuttle and Bonnet PVC
O-Ring Buna N
Other Wetted Parts Epoxy
Operating Pressure, Maximum
120 PSIG (8.3 bar) @ +70°F to +100°F
@ +21°C to +37.8°C
50 PSIG (3.4 bar) @ +101°F to +120°F
@ +38.3°C to +48.9°C
Operating Temperature, Maximum
Clear Version +120°F (+48.9°C)
Set Point Accuracy ± 20%
Set Point Differential 20% Maximum
Switch* SPST, 20 VA N.O. @ No Flow
Inlet/Outlet Ports 3/4˝ or 1˝ IPS and 1/2˝ NPT
Mounting Attitude Vertical, Inlet Down
Electric Termination No. 22 AWG, 24˝ L., PVC Lead Wires
*See “Electrical Data” on Page X-5 for more information.
U.L. Recognized —
File No. E31926
CSA Listed —
File No. LR30200
Cleanout is quick and
easy. Two locking
keys slide out to allow
removal of a one-piece
bonnet and shuttle
assembly. Housing
and piping are left
undisturbed.
Dimensions
3/4˝ IPS Size (Both Ports) 1˝ IPS Size (Both Ports)
(All other dimensions are
the same as 3/4˝ size)
How To Order – Standard Models
Specify Part Number based on material and port size.
PVC
Material
Clear
*3/4˝ IPS model with 1/2˝ NPT port adapter installed.
Notes:
1. Care should be taken by specifiers to ensure fluid
compatibility with the above listed wetted materials.
2. Use of 150 micron filtration is recommended.
– Stock Items.
Port
Size
Increasing Flow
1/2˝ NPT* 0.5 GPM ±20%
3/4˝ IPS 0.5 GPM ±20%
1˝ IPS 2.0 GPM ±20%
Actuation on
Part
1/2˝ NPT
Numbers
135805
135810
135815
Pressure Drop - Typical
Visit www.GemsSensors.com for most current information.
FLOW SWITCHES
G-21
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