Pressure Connections; Supply Pressure; Exhaust Ports - Emerson fisher VBL Instruction Manual

Instruction Manual
D103317X012
Figure 2. Volume Booster with Yoke Mounting Bracket
GE26237-Bracket

Pressure Connections

CAUTION
Do not use sealing tape on pneumatic connections. This instrument contains small passages that may become obstructed
by detached sealing tape. Thread sealant paste should be used to seal and lubricate pneumatic threaded connections.
The input signal connection is 1/4 NPT. The supply and output connections are 1/2 NPT (minimum pipe size
recommended for nipple mounting is 1/2 NPT). Connections to the volume booster should be made as indicated in
figure 3. Connections for typical applications are shown in figures 4 and 5. Ensure that the piping is of proper size to
meet the capacity demands of the booster and that you equip the actuator with properly sized input connections.

Supply Pressure

Supply pressure must be filtered, clean, dry air or noncorrosive gas.
WARNING
If a flammable or hazardous gas is to be used as the supply pressure medium, personal injury, property damage or
equipment damage could result from fire or explosion of accumulated gas or from contact with hazardous gas. The volume
booster has no provision for piping away the vented exhaust gas. Therefore, do not use flammable or otherwise hazardous
gas as a supply medium unless the unit is in a well‐ventilated area and all ignition sources have been removed.

Exhaust Ports

Exhaust to the atmosphere is through exhaust ports in the side of the unit. Keep the exhaust ports free of any
obstructions or foreign materials that might clog them.
HEX SCREW (QTY 6)
ATTACH THIS SURFACE
TO ACTUATOR YOKE
YOKE
MOUNTING
BRACKET
VBL Volume Booster
May 2017
HEX SCREW (QTY 6)
YOKE
MOUNTING
BRACKET
5