Relief Valve Setting Pressure; Pressure Loss; Suction Screen - Task Force Tips Ball Intake Valve AXD1ST-NX-T Instructions For Installation, Safe Operation And Maintenance

5.5.1 RELIEF VALVE SETTING PRESSURE

To set the relief valve pressure turn the adjusting
screw on the relief valve housing until the surface
of the screw is even with the desired pressure. A
9/16" (14mm) socket or a 1/4" (6mm) Allen wrench
may be used to turn the adjusting screw. The
Pressure relief valve should not be disabled (IE:
capped, plugged, or set to the OFF position) for
normal service conditions. Disabling the relief valve
may result in system damage or hose rupture if the
system exceeds operating limits. The pressure
relief valve meets the requirements of NFPA 1901.

5.6 PRESSURE LOSS

0
10
8
6
4
2
0
0

5.7 SUCTION SCREEN

This device may be equipped with a suction
screen to catch debris larger than 3/8" diameter
in the waterway. See chart to determine additional
loss caused by the screen. To add or replace a
suction screen, order TFT part #A1410-KIT for the
4.5" waterway, and TFT part #A1411-KIT for the
5.0" waterway.
©Copyright Task Force Tips LLC 2014-2019
Optional
Threaded Outlet
(TFT #A1114)
FLOW (LPM)
2000 4000 6000
5 INCH COUPLING
500 1000
FLOW (GPM)
Figure 5.6
Pressure Loss Chart
0 1000
35
30
25
20
15
10
5
0
0
200
Adjusting Screw
Figure 7.1
Pressure Relief Valve
8000 10000
6 INCH COUPLING
1500 2000
FLOW (LPM)
2000 3000 4000
400 600 800 1000
Figure 5.7
Suction Screen Pressure Loss
16
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2500
5000 6000 7000
4.5" Waterway
5.0" Waterway
1200 1400 1600 1800 2000
LIA-208 August 12, 2019 Rev04
2
1.5
1
0.5
0