10-1
Valtek Valdisk
Control Valves
Valtek No. 49020
GENERAL INFORMATION
The following instructions are designed to assist in
unpacking, installing and performing maintenance as
required on Valdisk rotary valves. Product users and
maintenance personnel should thoroughly review this
bulletin prior to installing, operating, or performing any
maintenance on the valve.
Separate maintenance instructions cover additional
features (such as actuators, positioners, special acces-
sories, fail-safe systems, etc.) Refer to the appropriate
Flowserve Installation, Operation, Maintenance Instruc-
tions when information on installing, maintaining, trou-
bleshooting, calibrating, and operating Valtek
®
actua-
tors or positioners is required.
To avoid possible injury to personnel or damage
to valve parts, WARNING and CAUTION notes
must be strictly adhered to. Modifying this
product, substituting nonfactory parts, or using
maintenance procedures other than outlined
could drastically affect performance, be
hazardous to personnel and equipment, and
may void existing warranties.
WARNING: Standard industry safety practices must
be adhered to when working on this, or any other,
process control product. Specifically, personal
protective and lifting devices must be used as
warranted.
NOTE: Selecting the proper fastener material is the
responsibility of the customer. Typically, the supplier
does not know what the valve service conditions or
environment may be. Valtek's standard body bolting
material is B7/2H. B8 (stainless steel) is optional for
applications above 800
°
F and with stainless steel or
alloy body valves. The customer therefore must consider
the material's resistance to stress corrosion cracking in
addition to general corrosion. As with any mechanical
equipment, periodic inspection and maintenance is
required. For more information about fastener
materials, contact your local Valtek representative or
factory.
Unpacking
1. While unpacking the valve, check the packing list
against the materials received. Lists describing the
valve and accessories are included in each ship-
ping container.
2. When lifting the valve from the shipping container,
position lifting straps to avoid damage to tubing and
mounted accessories. Valves up through 14-inch
may be lifted by the actuator lifting ring. On larger
valves, lift the valve using lifting straps or hook
through the yoke legs and outer end of the body.
3. In the event of shipping damage, contact your
shipper immediately.
4. Should any problem arise, contact your Valtek
representative.
