Balancing Valve0 pages

Balancing Valve
DESCRIPTION
The Graco® Balancing Valve assists divider valves to accurately
proportion lubricant at high differential pressures. It is
recommended for use when a pressure difference greater than
1,000 PSI exists between two or more of the points in a Graco
divider valve system.
The balancing valve is not affected by downstream pressure
variations. The preset pressure setting will maintain a uniform
pressure throughout the system that assures accurate and
efficient system operation.

Figure 1
Balancing valve set at 4,500 PSI

OPERATION (Figure 2)
The area (A) behind the check ball piston is sealed from
downstream pressure. Because this area and the seat area (B) of
the check ball are equal, the valve is balanced and is not affected
by downstream pressure. As pressure upstream of the valve rises
above the spring setting, the check ball unseats, allowing fluid to
pass through the valve. As pressure drops, the spring closes the
check ball until pressure again exceeds the spring setting.t
Figure 2

FEATURES
•t

Balancing valve is not affected by downstream pressure,
assures accurate flow to all lubrication points.

•t Balancing valve is field adjustable. Reduces on-site
inventory costs as one model meets all your system needs.
•t Balancing valve is in-line mounted, so it lowers installation
costs.
•t Balancing valve uses a wear-resistant tungsten-carbide ball
to reduce maintenance costs.