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DESCRIPTION
The CLA-VAL Model 100-01 HYTROL Valve is a main valve for
CLA-VAL Automatic Control Valves. It is a hydraulically operated,
diaphragm-actuated, globe or angle pattern valve.
This valve consists of three major components; body, diaphragm
assembly, and cover. The diaphragm assembly is the only moving
part. The diaphragm assembly uses a diaphragm of nylon fabric
bonded with synthetic rubber. A synthetic rubber disc, contained on
three and one half sides by a disc retainer and disc guide, forms
a seal with the valve seat when pressure is applied above the
diaphragm. The diaphragm assembly forms a sealed chamb er in
the upper portion of the valve, separating operating pressure from
line pressure.
INSTALLATION
1. Before valve is installed, pipe lines should be flushed of all chips, scale and foreign matter.
2. It is recommended that either gate or block valves be installed on both ends of the 100-01 HYTROL Valve to facilitate
isolating the valve for preventive maintenance and repairs.
3. Place the valve in the line with flow through the valve in the direction indicated on the inlet nameplate. (See "Flow Direc-
tion" Section)
4. Allow sufficient room around valve to make adjustments and for disassembly.
5. CLA-VAL 100-01 HYTROL Valves operate with maximum efficiency when mounted in horizontal piping with the cover UP,
however, other positions are acceptable. Due to size and weight of the cover and internal components of 8 inch and larger
valves, installation with the cover UP is advisable. This makes internal parts readily accessible for periodic inspection.
6. Caution must be taken in the installation of this valve to insure that galvanic and/or electrolytic action does not take place.
The proper use of dielectric fittings and gaskets are required in all systems using dissimilar metals.
7. If a pilot control system is installed on the 100-01 HYTROL Valve, use care to prevent damage. If it is necessary to remove
fittings or components, be sure they are kept clean and replaced exactly as they were.
8. After the valve is installed and the system is first pressurized, vent air from the cover chamber and pilot system tubing by
loosening fittings at all high points.
FLOW DIRECTION
The flow through the 100-01 HYTROL Valve can be in one of two directions. When flow is "up-and-over the seat," it is in "nor-
mal" flow and the valve will fail in the open position. When flow is "over the seat-and down," it is in "reverse" flow and the valve
will fail in the closed position. There are no permanent flow arrow markings.
The valve must be installed according to nameplate data.
Normal Flow
RECOMMENDED TOOLS
1.
Three pressure gauges with ranges suitable to the installation to be put at HYTROL inlet, outlet and cover connections.
2.
CLA-VAL Model X101 Valve Position Indicator. This provides visual indication of valve position without disassembly of
valve.
3.
Other items are: suitable hand tools such as screwdrivers, wrenches, etc. soft jawed (brass or aluminum) vise 400 grit wet
or dry sandpaper and water for cleaning.
Installation - Operation - Maintenance
BRIDGEWALL INDICATOR
(cast into side of valve body)
34
Serie 578
NGE - GE - AE
Illustration type GE
Reverse Flow
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