Flowserve Valtek Mark One K-Bellows Sealed Globe Valves - Manual (Page 3)

Valtek Mark One K-bellows
3
3. The user must provide fire protection.
1.7 Spare Parts
Use only FLOWSERVE original spare parts.
FLOWSERVE cannot accept responsibility for
any damages that occur from using spare parts
or fastening materials from other manufactures.
If FLOWSERVE products (especially sealing
materials) have been on store for longer
periods check these for corrosion or
deterioration before using these products. The
end user must provide fire protection for
FLOWSERVE products.
1.8 Service / Repair
To avoid possible injury to personnel or
damage to products, safety terms must be
strictly adhered to. Modifying this product,
substituting non-factory parts, or using
maintenance procedures other than outlined in
this instruction could drastically affect
performance and be hazardous to personnel
and equipment, and may void existing
warranties. Between actuator and valve there
are moving parts. To avoid injury FLOWSERVE
provides pinch-point-protection in the form of
cover plates, especially where side-mounted
positioners are fitted. If these plates are
removed for inspection, service or repair special
attention is required. After completing work the
cover plates must be refitted. Apart from the
operating instructions and the obligatory
accident prevention directives valid in the
country of use, all recognized regulations for
safety and good engineering practices must be
followed.
WARNING: Before products are returned
to FLOWSERVE for repair or service
Flowserve must be provided with an
MSDS (Material Safety Data Sheet) and
a certificate, which confirms that the
product has been decontaminated, and
is clean. Flowserve will not accept
deliveries if the MSDS and certificate
have not been provided (a form can be
obtained from Flowserve). Valve packing
should be removed and the packing
area flushed as part of the cleaning.
1.9 Storage
In most cases Flowserve products are
manufactured from stainless steel. Products not
manufactured from stainless steel are provided
with an epoxy resin coating. This means that
Flowserve products are well protected from
corrosion. Nevertheless Flowserve products
must be stored adequately in a clean, dry
environment. Plastic caps are fitted to protect
the flange faces to prevent the ingress of
foreign materials. These caps should not be
removed until the valve is actually mounted into
the system.
1.10 Product Variations
These instructions cannot claim to cover all
details of all possible product variations, nor in
particular can they provide information for every
possible example of installation, operation or
maintenance. This means that the instructions
normally include only the directions to be
followed by qualified personal where the
product is being used for is defined purpose. If
there are any uncertainties in this respect
particularly in the event of missing product-
related information, clarification must be
obtained via the appropriate Flowserve sales
office.
2. DISSASSEMBLY OF K-
BELLOWS VALVES
To disassemble the K-Bellows valve, refer to
Figure 1 and proceed as follows:
WARNING: Since toxic or hazardous
materials may be present, depressurize
the line to atmospheric pressure. Drain
all process fluids and decontaminate the
valve. Failure to do so can cause
serious personal injury. Keep hands, hair
and clothing away from moving valve
parts at all times. Face and eye
protection should be worn; otherwise,
serious personal injury may occur.
WARNING: The tell- tale tap should be
removed before disassembly and the
bellows checked for failure. If failure of
the bellows has occurred, extreme care
should be taken to avoid personal
injury.
2.1 Remove the actuator by removing first
the packing gland bolting and then the yoke
clamp bolting. Loosen the stem clamp nut on
the actuator stem. For air to open valves,
stroke the valve open to prevent damage to the
seat surfaces and to remove pressure from the