System Sensor WFD20 User Manual

N770-04-00 2 I56-393-05
Mounting Bracket
"C" clip
Actuating lever
set screw
Actuating Cam
Spring
Mounting screws
Terminal block
Base housing
Actuating lever roller
Cover
Tamper-resistant
screws
Wrench for
tamper-resistant
screws
(P/N WFDW)
Hex wrench
(P/N HEXW)
Nut
Retaining Washer
Carriage Bolt
Clamping Bar
Yoke
Valve Stem
(2 thru 12"only)
NOTE:
LARGER GATE VALVE SHOWN (2" THRU 12"). WHEN INSTALLING
SUPERVISORY SWITCH TO SMALLER GATE VALVES (1/2" THRU 1 1/2")
CARRIAGE BOLTS ARE TO BE LOCATED ON OUTBOARD SIDE OF YOKE.
ON SMALL VALVES WITH LIMITED CLEARANCE THE USE OF J-BOLTS
MAY BE REQUIRED.
Seal
SLIDE CLAMPING
BAR TO REMOVE
OR INSTALL.
Figure 2:
J-Bolt Detail
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System Sensor WFD20 Specifications

General

Type	Waterflow Detector
Switch Type	SPDT
Operating Temperature	32°F to 120°F (0°C to 49°C)
Size	2 inches
Minimum Flow Rate for Activation	10 GPM
Humidity Range	10% to 93% non-condensing