Watts FS10-C User Manual

For Residential and Commercial Applications

ES-FS10-C

Job Name

Job Location

Engineer

Approval

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Series FS10-C

Flow Switch

Sizes: For pipes 1" - 6" (25 – 150mm)

Series FS10-C Flow Switch provides accurate monitoring of liquid flow in pipelines servicing water systems, heating systems, air conditioning, and processing installations for industrial and commercial applications. The flow switch is designed to act as an automatic control or safety device for liquid flow. The singlepole, double-throw switch can be wired to start or stop a motor when a flow or no flow condition exists or activate an alarm when flow is inadequate. The switch then turns off the alarm when adequate flow is restored. Series FS10-C flow switches install in tee in horizontal or vertical piping.

Features

• Beryllium copper paddle

• Single cover retaining screw mounted on top of flow switch

• Coarse and fine sensitivity adjustment

• Two electrical conduit knockouts

• Easy accessibility to switch terminals

• 1" (25mm) NPT connection

• Switch assembly independent/removable from mounting adaptor

• Optional flow indicator light integral with switch cover (FS10-CL)

Models

FS10-C-standard unit

FS10-CL-features indicator light

FS10-CL-SS-features stainless steel bellows and paddle

Contractor

Approval

Contractor’s P.O. No.

Representative

SWITCH – Single pole, double throw

O-RING INLET ADAPTER – Threaded connection (quick paddle orientation in pipe.)

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INDEPENDENT

Switch assembly

PADDLE – made of beryllium copper. Segmented and quickly adaptable for 1" (25mm) to 3" (80mm) pipe. Extended paddle also included for larger pipe size.

EASY WIRING

completely removable, no danger of wires interfering with operation.

HIGH – (Coarse) Sensitivity Adjustment

TWO KNOCKOUTS – Connect conduit at either side of chassis.

Paddles

3 in 1 Paddle – A segmented beryllium copper paddle is quickly adaptable for 1" through 3" pipe (25 through 80mm). The extended beryllium copper paddle, also included, is for larger pipe sizes up to 6" (150mm). Paddle length conforms to ASTM tee standards.

Materials

Body: Brass

Enclosure: Zinc plated steel

Cover: Epoxy coated steel

Bellows: Brass ASTM B-36

Inlet Adapter: Brass ASTM B-36

Paddle: Beryllium Copper ASTM B-194

– cover

Standards

GENERAL SIGNALING EQUIPMENT

11S1

Underwriter’s Laboratories Listed U.S.A. No. 11S1

Pressure-Temperature

Maximum Working Pressure: 175psi (12.1 bar) at 300°F

(148.9°C)

Maximum Temperature: 300°F (148.9°C)

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

Dimensions

⁄8" (22mm)

Dia. Electrical

Knock-outs

1" (25mm)

Pipe Thread

31⁄16"

(78mm)

11⁄2” (40mm)

⁄4" (20mm)

17⁄8"

(48mm)

31⁄2"

(89mm)

31⁄4"

(83mm)

31⁄16"

(78mm)

17⁄8" (48mm)

HEX

⁄8" (22mm)

Flow Rates

FLOW RATES Required to Actuate the No. FS10C or FS20 Flow Switch in Horizontal Pipe. Flow rates in U.S. gallons per minute (GPM). Velocity in feet per second (FPS). *Equipped with extended paddle trimmed to pipe size.

PIPE SIZE IN WHICH

FLOW SWITCH INSTALLED

FACTORY OR

MINIMUM

FLOW SETTING

MAXIMUM

FLOW SETTING

ACTIVATION

FLOW

DEACTIVATION

NO FLOW

ACTIVATION

FLOW

DEACTIVATION

NO FLOW

GPM 5.2 7.9 10.0 13.2 20.9 30.0 39.0 58.0 79.0

FPS 2.01 1.74 1.62 1.29 .92 1.30 1.0 .94 .88

GPM 2.0 3.2 5.3 8.1 9.9 12.0 19.0 29.0 39.6

FPS .77 .71 .86 .79 .44 .52 .50 .47 .44

GPM 11.5 18.0 18.0 34.1 53.9 52.0 73.5 115.0 166.0

FPS 4.44 3.98 2.91 3.33 2.38 2.26 1.86 1.85 1.84

GPM 8.5 14.6 15.1 29.2 44.4 46.1 64.0 92.0 123.0

FPS 3.28 3.23 2.44 2.85 1.96 2.00 1.67 1.48 1.37

*Flow rates for these sizes are calculated.

(25mm)

11⁄4"

(32mm)

11⁄2"

(40mm)2"(50mm)

21⁄2"

(65mm)3"(80mm)

*4"

(100mm)

*5"

(125mm)

*6"

(150mm)

A Watts Water Technologies Company

Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca

USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com