Low Water Cut-Offs & Feeders
SECTION
SECTION
6
6
Flow Switches Test-N-Check Valves
Replacement Parts
(cont.) For Series FS4-3 General Purpose Liquid Flow Switches
Series TC-4
mfr# Model# description webb# FS4-15SS 310451 Stainless Steel Paddle Kit 108733
For Series 47/47-2 Mechanical Water Feeder/Low Water Cut-Offs
Paddle Kit
mfr# Model# description webb# SA47-0101-102 341600 Valve, Cartridge & Strainer Assembly Kit 12494 37-26 312800 Gasket 12488 2 110000 Switch 30246 2-M 110100 Switch With Manual Reset 69798
Series TC-4
• For hot water boilers. • Simplifies ASME CSD-1a. code mandated testing of low water cut-offs by eliminating the need to drain the system. • Includes one upper and one lower valve for mounting at crosses in equalizing lines. • Restricts water flow when the low water cut-off ’s blow down valve is open. • Adjustable built-in vacuum breaker in upper valve provides rapid evacuation of water from the float chamber. • 1” NPT. • Maximum temperature 250° F. • Maximum pressure 160 psi. mfr# Model# description webb# TC-4 195000 Test-N-Check Valves, Set of 2 55575
Series 47/47-2 Components
Flow Switches — Liquid Series FS4-3 General Purpose Liquid Flow Switches
Series FS4-3
• Universal design serves the widest variety of applications. • For starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, metering devices and others. • Replacement for common flow switches from Johnson/Penn, Potter/Taco, Watts, Hydrolevel and other manufacturers. • 1” NPT. • Two electrical knock-outs allows connection from either end. • Sensitivity adjusting screw makes flow adjustment easy. • Single pole, double throw snap switch. • Hardened stainless steel bearings minimize friction. • Sealed Monel bellows. • Four stainless steel paddles included – 1”, 2”, 3”, & 6”. • Optional features – Time delay. – Two SPDT switches to make or bread two separate circuits. – Reinforced paddles. – Materials on construction suitable for corrosive liquids. – Fire sprinkler service – Model F34-3F only. – BSPT threads. • Minimum temperature (fluid or ambient). • Maximum temperature 300°F. • Maximum pressure 160 psi.
6 Hydronics/steam
mfr# Model# description webb# FS4-3 114400 General Purpose Flow Switch 12477
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56 6_Hydronics-Steam_p83.indd 56-57
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F.W. Webb Company
57 3/23/08 8:56:38 PM