Johnson Controls V48 Bedienungsanleitung

PSC9723
Introduction
These watervalves are especially designed for
condensing units cooled either by atmospheric
or forced draft cooling towers. They may be
used on single, or multiple condenser hook-ups
to the tower. The type V48 valve senses the
compressor head pressure and allows cooling
water to flow to the condenser, to by-pass the
condenser, or to allow waterflow to both
condenser and by-pass line in order to maintain
correct refrigerant head pressure. A further
advantage of this system is that the 3-way valve
permits a continuous water flow to the tower so
the tower can operate efficiently with a
minimum of maintenance on nozzles and
wetting surfaces. The valves can be used in
non-corrosive refrigerant systems. Ammonia
power elements and valves designed for salt-
water applications are available. The valves
have a quick opening characteristic.
Pressure balanced design
Free movement of all parts
Easy manual flushing
High K v values
Pressure actuated
Can be used as mixing or
diverting valve
© 2002 Johnson Controls Inc.
Code No. PD-V48-E
Series V48
3-way Pressure Actuated Modulating Valves
Feature and Benefits
European Refrigeration Controls Catalogue
Pressure Actuated Three-way Valve
The valve setpoint and performance are
independent of liquid inlet pressure.
Valve can withstand severe hydraulic
shock-waves without damage.
Provides smooth pressure modulation.
Does not affect valve adjustment.
Small dimensions with very high capacity
Direct and fast response to pressure
variations
Reduces stock. One type for different
applications.
Catalog Section 7
Product Bulletin V48
Issue 09/01/2003
Series V48
Catalogue Section 7