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Basic Valves - The
Cla-Val Hytrol valve is a hydraulically operated, diaphragm actuated
globe, or angle pattern valve. It consists of three major components: the
body, diaphragm assembly, and cover. The diaphragm assembly is the only
moving part. The Cla-Val Hytrol is used as the basic valve in almost all
Cla-Val Petroleum valves. It is used in every type of piping system
requiring remote control, pressure regulation, solenoid operation, rate of
flow control, liquid level control, or check valve operation. Available in
various materials and in a full range of sizes, either screwed or flanged
ends, its applications are unlimited. |
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Pressure Reducing Valves - The Model
90AF-4 maintains a relatively constant downstream pressure regardless of
changes in the flow rate. They are designed to close relatively quickly
when downstream pressure rises above selected control pressure. The rapid
closing of the 90AF-4 minimizes over pressurization in the downstream
piping in areas where it is impractical to install a relief valve. When
flow rate changes are slight the reducing control pilot operates the
valve. When sudden stoppages occur, a relief control pilot takes over to
cause the main valve to close quickly. A flow control device is used in
the pilot system to permit adjustment of the opening speed. |
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Pressure Relief Valves - The Model
50AF-2 Surge and Pressure Relief Valve is a diaphragm-type valve designed
to maintain constant upstream pressure to close limits. This valve is a
hydraulically-operated, pilot-controlled, modulating type. It is used
where problems are encountered in pressure relief, sustaining back
pressure, or in unloading functions in a by-pass system. In
operation, the valve is actuated by line pressure through a pilot control
system, opening fast to maintain steady line pressure but closing
gradually to prevent surges. Operation is completely automatic, and
pressure settings may be easily changed. |
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Rate of Flow Controller Valve - The
Model 40AF-2C Rate of Flow Control and Fuel Shut-Off Valve limits the flow
to a pre-set maximum and also closes quickly in response to a signal from
the Float Control of a Fuel-Water Filter/Separator. It is a
hydraulically-operated, pilot-controlled, diaphragm-type, globe valve.
Should the diaphragm become damages the valve will close tight, providing
"fail safe" operation. The rate of flow control pilot is
actuated by differential pressure produced across a calibrated stainless
steel orifice plate installed at the valve inlet. The flow rate setting is
adjustable from 90 percent to 112 percent of rated capacity of the
Filter/Separator. This valve has an accuracy of plus or minus 5 percent of
the adjusted rate setting. An auxiliary 3-way diaphragm control pilot
provides immediate response to operating pressure signal from the Float
Control. |
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Single Stage Electric Loading -
The Model 71 Series single-stage electric loading valves are a series of
solenoid valves designed for use on key lock or card loading systems where
top-off of the product is manually controlled by the operator. The valves
operate to prevent delivery of the product until all electric components
of the lock-out system are properly set, and a positive accurate shut-off
of product at the end of the loading cycle. The Model 71 Series are also
used as storage tank block valves operating in conjunction with pumps
delivering product from the tank. While product is not being delivered
they maintain a positive shut-off at storage tank inside the firewall
area. |
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Two-Stage Electric Loading - The Model
72 Series Two-Stage Electric Loading Valves are a series of solenoid
valves designed for use with meters providing a positive shut-off of fluid
flow after a predetermined amount of product has been metered. This series
includes specific valves to meet the varied demands of the many kinds of
fluid dispensing systems. The most common usage for these valves is with
meters having a dual switch head. The first switch shifts the preset valve
from high flow rate to a low flow rate. The second switch produces final
shut-off which is positive, permitting precise control of the amount of
product dispensed. |
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Non-Surge Check -The Model 81AF
Non-Surge Check Valve is installed on the discharge side of the refueling
pump. It automatically prevents reverse flow and opens at a controlled
rate to keep pump starting surges from shocking downstream equipment. The
valve is controlled by a pilot control system with a flow control valve
which permits adjustment of the valve's opening rate. Auxiliary check
valves in the pilot system apply downstream pressure to the main valve
cover chamber for rapid closing the instant a pressure reversal occurs. |
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High Level Shut-Off - The 129AF-1 High
Level Shut-Off Valve automatically opens to fill a storage tank and closes
tightly when liquid level reaches a predetermined point. No attention is
required once adjusted to the desired level. It is a
hydraulically-operated, diaphragm-actuated, pilot-controlled globe pattern
valve. Should the diaphragm become damaged the valve will close tight,
providing "fail safe" operation. The 129AF-1 is controlled by a
CFM2 float actuated pilot mounted near the high level shut-off point in
the tank. The float pilot control is a precision lapped plate type valve
actuated by a float attached to a lever arm. |
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Solenoid Control Valve - The Model
134AF-5 Valve is controlled by a solenoid and is operated hydraulically by
line pressure. The pilot control is a normally closed, explosion proof
solenoid valve which is energized to open. It is fitted with a manual
actuator to permit operation in an emergency. The Model 134AF-5 is
completely self-contained; no external connections are necessary other than
the electric conduit to the solenoid pilot control. |
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