Cla-Val 100-02 Quick Manual - Manual

Principle of Operation
Powertrol Valve
100-02
DESCRIPTION
This manual contains information for installation, operation and main-
tenance of the Cla-Val Co. 100-02 Powertrol, an automatic valve
designed for use where independent operating pressure is desired,or
when line fluid is unsuitable as an operating medium.
This valve is a hydraulically operated, diaphragm type, globe or angle
pattern valve. it is single seated and incorporates into its design two
operating chambers sealed from one another by a flexible synthetic
rubber diaphragm. Pressure applied to the upper chamber closes the
valve; when applied to the lower chamber, it opens the valve.
With proper pilot controls, the valve can be held in any intermediate
position between fully open and tightly closed.
INSTALLATION
Allow sufficient room around the valve assembly to make adjustments
and for disassembly.
NOTE: BEFORE THE VALVE IS INSTALLED, PIPE LINES
SHOULD BE FLUSHED OF ALL CHIPS, SCALE AND FOREIGN
MATTER.
It is recommended that gate or block valves be installed on both the
upstream and downstream sides of the 100-02 to facilitate isolating
the valve for preventative maintenance.
Place the valve in the line with flow through the valve in the direction
indicated on the inlet name plate or by flow arrows.
Cla-Val Powertrol Valves operate with maximum efficiency when
mounted in horizontal piping with cover "UP,' however, other positions
are acceptable. Due to the size and weight of the cover and internal
assembly of 4" and larger valves, installation with the cover "UP" is
advisable. This makes periodic inspection of internal parts readily
accessible.
When a pilot control system is installed on the Powertrol Valve, use
care to prevent damage. If it is necessary to remove fittings or com-
ponents, be sure they are kept clean and replaced in the exact order
of removal.
After the valve is installed and the system is first pressurized, vent air
from the cover chamber and tubing by loosening fit" sings at all high
points.
Full Open Operation
When operating pressure below the
diaphragm is applied and operating, pressure
is relieved from the cover chamber, the valve
is held open, allowing full flow.
Modulating Action
The valve holds any intermediate position
when operating pressure is equal above and
below the diaphragm. A Cla-Val four-way pilot
control with "lock" position can maintain this
balance by stopping flow in the pilot control
system.
Tight Closing Operation
When pressure below the diaphragm is
relieved and operating pressure is applied to
the cover chamber, the valve closes drip-tight.
4 - Way Control
→
4 - Way Control
→
4 - Way Control with lock
→
TROUBLE SHOOTING
The following trouble shooting information deals strictly with the
Powertrol Valve; however some 'impossible causes" will refer to compo-
nents that may exist in the variety of control systems available for the
valve. All trouble shooting is possible without removing the valve from
the line.
CAUTION: Extreme care should be taken when servicing the valve.
Gate or line block valves must be closed upstream and downstream of
the valve before starting disassembly. When there are no block or gate
valves to isolate the Powertrol Valve it should be realized that the valve
cannot be serviced under pressure. Steps must be taken to remedy this
situation before proceeding.
1.
2.
3.
4.
5.
6.
MODEL
INSTALLATION / OPERATION / MAINTENANCE
(Full Internal Port)