Cla-Val 58-01/658-01 Quick Manual - Manual

Combination Back Pressure & Solenoid
Shut-off Valve
INSTALLATION / OPERATION / MAINTENANCE
58-01/658-01
MODEL
INTRODUCTION
The Cla-Val Model 58-01/658-01 valve performs two separate func-
tions. When the solenoid is activated, it maintains a constant back
pressure by discharging excess pressure downstream. When the
solenoid is de-activated, the valve closes drip-tight. When the sole-
noid is activated, the valve is actuated by hydraulic line pressure
through the pilot control system. When inlet pressure is greater than
the control setting, the valve opens. When inlet pressure is equal to
the control setting, the pilot modulates the valve, maintaining the pre-
selected back pressure. When inlet pressure is less than the control
setting, the pilot system closes the valve drip tight. Changing the
pressure setting simply involves turning an adjusting screw on the
pilot control.
INSTALLATION
1. Allow sufficient room around the valve assembly to make adjust-
ments and for servicing.
2. lt is recommended that gate or block valves be installed to facili-
tate isolating valve for preventative maintenance. When used as a
surge control or pressure relief valve where valve outlet discharge
is to atmosphere, then a gate or block valve is needed at valve
inlet. When used as a back pressure sustaining control valve
where valve outlet is connected to pressurized downstream sys-
tem, then gate or block valves are needed at valve inlet and outlet.
NOTE: BEFORE THE VALVE IS INSTALLED, PIPE LINES
SHOULD BE FLUSHED OF ALL FOREIGN MATTER.
3. Place valve in line with flow through valve in direction indicated
on inlet plate or flow arrows. Check all fittings and hardware for
proper makeup and verify that no apparent damage is evident.
4. Cla-Val 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 cover and internal compo-
nents on six inch and larger valves, installation with the cover up is
advisable. This makes periodic inspection of internal parts readily
accessible.
5. 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.
OPERATION AND START-UP
1. Prior to pressurizing the valve assembly make sure the necessary
gauges to measure pressure in the system, are installed as required
by the system engineer. A Cla-Val X101 Valve Position Indicator may
be installed in the center cover port to provide a visual indication of
the valve stem position during startup adjustment..
CAUTION: During start-up and test a large volume of water may
be discharged downstream. Check that the downstream venting is
adequate to prevent damage to personnel and equipment. All
pilot adjustments should be made slowly in small increments.
If the main valve closes too rapidly it may cause surging in
upstream piping.
2. If isolation valves (B) are installed in pilot system open these
valves (see schematic).
3. The three-way Solenoid Control applies or relieves pressure in
the cover chamber of the Auxiliary Hytrol Valve (5) in the control
piping. The following action takes place:
4. Loosen jam nut on X42N-2 strainer valve assembly and turn
adjusting stem clockwise until it seats. Then turn stem counterclock-
wise 1/4 to 1/2 turn and tighten jam nut for an initial setting.
5. Remove cap on the CRL Pressure Relief Control, loosen jam nut
and turn adjusting screw clockwise until spring is fully compressed.
This puts the control in full closed mode and will cause the main
valve to close when system is pressurized.
6. If a downstream block valve is installed, slowly open this valve.
7. Partially open upstream block valve. The main valve should
close.
8. Carefully loosen the plug at top of indicator assembly. If an indi-
cator (X101) is installed, loosen the bleed valve at top of indicator.
Bleed air from cover and tighten plug or bleed valve.
Carefully loosen tubing fittings at highest points and bleed air from
system. Retighten fittings.
9. Open fully the upstream block valve and turn the CRL adjusting
screw slowly counterclockwise until you begin to hear a flow through
the control. The main valve should start to open. If the pressure is
below the required relief setting, refer to the spring chart and turn the
adjusting screw clockwise the number of turns required for the prop-
er setting. Lock the jam nut and replace cover. An observation of the
pressure relief setting should be made during usage. The controls
can be readjusted as required.
10. To check the operation of the solenoid shutoff feature, alternate-
ly energize and de-energize the solenoid to open and close the main
valve. The main valve should alternately close drip tight and open to
set point of the CRL. The optional manual operator on solenoid over-
rides operation by shifting it to the energized position when small red
knob is fully turned clockwise. By turning small red knob counter-
clockwise fully normal solenoid operation is restored.
MAINTENANCE
1. Cla-Val Valves and Controls require no lubrication or packing and
a minimum of maintenance. However, a periodic inspection sched-
ule should be established to determine how the fluid is affecting the
efficiency of the valve assembly. Minimum of once per year.
2. Repair and maintenance procedures of the Hytrol Main Valve and
control components are included in a more detailed IOM manual. It
can be downloaded from our web site (www.cla-val.com) or obtained
by contacting a Cla-Val Regional Sales Office.
3. When ordering parts always refer to the catalog number and
stock number on the valve nameplate.
Solenoid Control (4)
Energized to Open
Cla-Val 58-01
De-Energized to Open
Cla-Val 58-01
Position Port Flow
Auxiliary (5) and
Main Valve (1)
Auxiliary (5) and
Main Valve (1)
Energized 1 to 2
O PEN R ELIEVES
C OVER P RESSURE
C LOSED A PPLIES
C OVER P RESSURE
De-Energized 1 to 3
C LOSED A PPLIES
C OVER P RESSURE
O PEN R ELIEVES
C OVER P RESSURE