Brooks Instrument Control Valve - Manual (Page 11)

2-3
Section 2 Installation Installation and Operation Manual
X-VA-8503-eng
Part Number: 541B087AHG
March, 2008
Needle Control Valves Models 8503 and 8504
It is recommended that a Brooks Model 1390 Filter with a rating of two (2)
microns, be installed on the inlet and outlet sides of the valve body. This
filter will reduce the amount of foreign matter which could impair the operation
of the valve.
2-8 Panel Mounting Standard NRS Valve (Reference Figure 2-1)
Figure 2-1 Panel Mounting Drawing
a. Open the valve by rotating the knob (19) counterclockwise until stop is
reached.
b. Using a 1/16" hex wrench, loosen the set screw (2) and remove knob (1).
c. Using a .050" hex wrench, loosen the set screw (17).
d. Remove the bonnet nut (16), and the front panel nut (15F) from the
bonnet (12).
e. From rear of panel, insert the valve bonnet into the panel opening. The
amount of valve protrusion is controlled by adjusting the rear panel nut
(15R).
f. Install and tighten front panel nut (15F).
g. Install and securely tighten the bonnet nut (16).
h. Using a .050" hex wrench, tighten set screw (17).
i.
Install knob.
j. Using a 1/16" hex wrench, tighten set screw (2).
k. Connect the inlet and outlet connecting lines to the valve body.