CLARK SOLUTIONS

Series 1800 PVC Flow Switches

1” Pipe Size

DESCRIPTION

Series 1800 flow switches are manufactured to exacting standards and provide accurate flow detection for most applications. Product inspection involves calibrated tools and gages traceable to National Bureau of Standards.

Switch function involves magnet equipped PVC shuttle that is displaced at the proper calibrated flow of liquid to actuate the hermetically sealed reed switch.

The flow swtches are broadly used as OEM components, in water & waste facilities, irrigation, HVAC equipment and any process where the materials of construction and function are suitable.

SPECIFICATIONS

Wetted Materials
	End Connections: 1" Slip
Housing Material: PVC
Piston Material: PVC; CPVC available, consult us
Magnet: Ceramic Ring Magnet
Spring: 316 SS
O-Ring: Viton "A"
Wiring: 18 AWG Polymeric 24" Long; with or without 1/2" NPT 
	conduit connection spud (see model table)
Reed Switch: 20 VA SPST, N.O.; SPDT available option
Max Flow: 7 GPM
Operating Temperature: -20 to 140°F
Operating Pressure: 150 PSI
Set Point Accuracy: ±20% Max
Set Point Difference: ±20%

Notes:
-Standard flow calibration is in water@70°F. Calibrated on 
	increasing flow with lead wires up.
-Flow setpoints available to 6 GPM, consult us.
-Use only plastic junction box & flexible conduit if using the
	1/2" NPT conduit spud.

ORDERING INFORMATION

PVC Flow Switches
Model	Flow Setting	1/2” NPT Conduit Spud
1800-42549	0.5 GPM	No
1800-42545	1.0 GPM	No
1800-42570	0.5 GPM	Yes
1800-42571	1.0 GPM	Yes
PVC Adapter Fittings
Model	Description
1800-42751	1” Slip to 3/4” Slip
1800-42752	1” Slip to 1/2” Slip
1800-42753	1” Slip to 3/4” Slip
1800-42754	1” Slip to 1/2” Slip