System Sensor’s Accuflow™ T-Tap series is a new line of solid state waterflow

detectors designed for primary signaling in residential systems and branch line

signaling. These models fit 1” NPT tees including: 1”, 1-1/4” and 1-1/2” NPT

threaded ferrous and brass tees; 1”, 1-1/4”, 1-1/2” and 2” copper sweat tees;

1” CPVC tees; and 1-1/2” polybutylene tees. For 2” cast and malleable threaded

tees use 2” paddle (P02-0023-000) provided.

Robust Construction.

The Accuflow AFDT model consists of a rugged enclosure for

indoor and outdoor use. Like all System Sensor waterflow detectors, Accuflow mod-

els operate across a wide temperature range, from 32ºF to 120ºF (0°C to 49°C).

Reliable Performance.

Accuflow detectors incorporate a solid state retard to ensure

consistently accurate timing. Designed for use within conventional and addressable

fire alarm systems, Accuflow detectors include connections for both the panel or

addressable module, as well as a local bell or notification device.

False Alarm Immunity.

The solid state circuitry of the Accuflow series provides

greater timing accuracy over traditional mechanical retard designs. This accuracy

minimizes the risk of false alarms created by pressure surges or air trapped within

the sprinkler system.

Simplified Operation.

Accuflow detectors are designed to simplify installation. Wired

like traditional waterflow detectors, the Accuflow series does not require the installer

to run an additional third wire. Two conduit openings permit easy attachment to the

local alarm system.

Solid state retard assures precise

timing accuracy

Designed for use with 1” NPT

connections

Dipswitch selections simplify

retard settings

Non-polarized, two-wire design

allows connection to a local bell and

conventional or addressable systems

Terminals accommodate up to

12 AWG wire

Synchronized switches activate

both the alarm panel and local

bell simultaneously

Field-replaceable retard assembly

Product Overview

Solid State

Waterflow Detectors

Replacement Par ts

WFDW

Cover wrench

546-9000

Cover tamper

switch kit

WFDN4

Gasket kit

PRK9

Paddle Kit

AFDPCBRK

Retard PCB kit

AFDT

AFDT (cover removed)

Models Available

AFDT

Water Flow Detector

AFDTH

Water Flow Detector

AFDTA

Water Flow Detector

(ULC/Candian)

AFDTHA

Water Flow Detector

(ULC/Candian)