Powers 596 Series Flowrite II Heavy Duty Control Valves - Type MI Mixing - Manual (Page 7)

7
Installation
n
Water System Maintenance
All systems are susceptible to valve and system problems caused
by improper water treatment and system storage procedures.
These guidelines are provided to help avoid valve and water sys-
tem problems resulting from improperly treated water or storage
procedures and to obtain maximum life from the valves.
Durability of valve stems and packings is dependent on maintain-
ing non-damaging water conditions. Inadequate water treatment
or filtration can result in corrosion, scale, and abrasive particle
formation. Scale and particulates can result in stem and packing
scratches and can adversely affect packing life and other parts
of the hydronic system.
To maintain non-damaging conditions, follow these guidelines:
• Clean the system prior to start up.
• Use filtration equipment where needed.
• Properly store off-line systems and monitor water treatment
results.
• Follow the advice of a water treatment professional.
Inspection
Inspect the package and contents for damage. If damaged,
notify the appropriate carrier immediately.
If consultation is necessary, please contact Powers Customer
Service for assistance.
Requirements
• Pipe wrenches
• Flange gaskets, bolts / nuts
• Installer must be a qualified, experienced technician
CAUTION!
• Install the valve with the flow in the direction of the flow
arrows ("A" and "B" ports are inlets and "AB" port is the outlet).
• Do not exceed the ratings of the device.
• Avoid locations where excessive moisture, corrosive fumes, or
vibration are present.
Mounting / Orientation
1. The valve should be mounted in a location that is within the
ambient limits of the actuator. When selecting a location,
allow sufficient room for valve linkage, actuator, and other
accessories and for service of the product.
2. The preferred mounting position for the valve is with the valve
stem vertical above the valve body. Avoid mounting the valve
so that the valve stem is below horizontal.
3. The valves must be piped with two inlets ("A" and "B" ports)
and one outlet ("AB" port).
Flanged Connection
The 596 series flanged valve bodies conform to ANSI Standard
125 Lb. Cast Iron Pipe Flanges. The companion flanges (not
provided) should be the same specification as the valve. The
125 Lb. Flanges have plain flat faces and should not be bolted to
a raised faced flange.
1. All parts should be clean to assure the best results.
2. The pipe with the companion flanges installed should be
properly supported and aligned. Be sure the companion
flange is flush with the face of the valve body flange and lined
up squarely.
3. Use a gasket material (not provided) that is recommended
for the medium being handled. CAUTION! Do not apply pipe
dope to the valve flange, gasket, or companion flange.
4. See Figure-7 for flange and flange bolt details. Figure-8
shows the proper way a flanged valve should be mounted.
Valve
Body
Gasket:
Supplied by Others
Companion
Flange
Figure 8 - Installation of Flanged End Valves
Maintenance
n
Regular maintenance of the total system is recommended to assure sustained performance. See Table-6 for maintenance kit part numbers.
Table - 6 Maintenance Kits for 596MI Valves
Valve Description Replacement Replacement Valve Repair Kit*
Pack Assembly Gaskets
2.5 596 Pack 596250G MIGOBMTK
3 596300G MIHOBMTK
4 596400G MIJOBMTK
5 596500G MIKOBMTK
6 596600G MILOBMTK
* Kit includes replacement packing and stem & plug assembly.