Cla-Val 98-06/698-06 Quick Manual - Manual

The Model Cla-Val 98-06 is an
Automatic Pressure Management
Control Valve designed to respond to
changes in downstream demand.
Downstream pressure is managed
between high and low flow system
conditions.
INSTALLATION
1. Allow sufficient room around the valve assembly to make adjustments
and for servicing.
2. lt is recommended that gate or line block valves be installed on both
ends of the 98-06 valve assembly, at a minimum of one pipe diameter
apart to facilitate isolating the valve for maintenance.
NOTE: BEFORE THE VALVE IS INSTALLED, PIPELINES SHOULD
BE FLUSHED OF ALL CHIPS, SCALE, AND FOREIGN MATTER.
INSTALLATION (continued)
3. Place the valve assembly in the line with flow through the valve in the
direction indicated on the inlet plate or by flow arrows. Check all
fittings and hardware for proper makeup and that no apparent
damage is evident. Be sure Main Valve cover nuts/bolts are tight. As
pressure in some applications can be very high, thorough inspection
for proper installation and makeup is strongly recommended.
4. Cla-Val Automatic Control 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
components of six-inch and larger valves, installation with the cover up
is advisable and provides greater accessibility to internal parts for
periodic inspection.
OPERATION AND START-UP
CAUTION: During start-up and test procedures, a large volume of water
may be discharged downstream. Check that the downstream venting is
adequate to prevent damage to personnel and equipment. All adjustments
in pressure should be made slowly while under flowing conditions.
If the Main Valve closes too fast, it may cause surging in upstream piping.
1. Prior to pressurizing the valve assembly, ensure that the necessary
gauges to measure pressure in the system are installed as required
by the system engineer.
2. I f isolation valves (B) are installed in pilot system, open these
valves (see schematic).
3. Cla-Val CV Flow Controls (C or S) provide adjustable regulation of
flow in and out of the Main Valve chamber to minimize pulsations that
sometime occur at very low flow rates. If CV Controls are installed,
loosen jam nut and turn adjustment screw counter-clockwise from
closed position all the way out for an initial setting.
4. Open the upstream gate or block valve just slightly to allow the main
valve assembly and pilot system to fill with liquid.
5. Carefully loosen tube fittings at highest points and bleed air from pilot
control system. Carefully loosen the plug at top of Main Valve cover to
bleed air from cover. If an indicator is installed, carefully loosen the air
bleed screw at top of indicator. Tighten tube fittings. See 2 & 4 above.
6. Open the upstream gate or block valve fully.
7. Slowly open the downstream gate or block valve. Flow should occur
and pressure should remain constant.
8. Adjust the pilot control system to desired pressure as described in
Adjustment Methods I and II.
There must be liquid flowing through the valve during pressure
adjustments.
9. To check the operation of the valve, open and close the downstream
gate valve. The downstream pressure should remain constant.
PRESSURE MANAGEMENT VALVE
98-06
MODEL
INSTALLATION / OPERATION / MAINTENANCE
Item Basic Components
1
100-01 Hytrol (98-06) Main Valve - Full Port
100-20 Hytrol (698-06) Main Valve - Reduced Port
2 X43 “Y” Strainer
3 X58C Restriction Assembly
4 CPM-A Pressure Management Control
5 X78-4 + X101 Adjustable Orifice Assembly
6 CK2 Isolation Valve - Size = 1/8”
7 X44A Strainer Orifice Assembly
8 X141 Gauge Assembly
9 6120 Needle Valve
10 X58E Restrictor Assembly
11 Accumulator (Air Charged)
Note: The items shown above and listed below will be
referred to throughout the following instructions
1
You will need a 3/16” X 4” slim head
screwdriver to set low pressure.
2
INLET
B
B
6A
P1
S C
6B
3 7
1
5
9 ADJUSTMENT
HIGH PRESSURE
10
LOW
ADJUSTMENT
PRESSURE
11
4
B
8
ADJUSTMENT SCREW
P2