Keystone Manuals: Series 320 Butterfly valves, Keystone-EN Manuals & Guides

KEYSTONE FIGURE 320 BUTTERFLY VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Before installation these instructions must be fully read and understood

HAZARD POTENTIALS

• disregarding of instructions

• improper use of product

• insufficiently qualified personnel

Valve application to be within the pressure/
temperature limits indicated in the P/T diagram.

Essential points and functions of the valve
should be inspected on a regular basis.

When the valve is used in an end-of-line
function, PED Cat-I applications are allowed
only. For other categories, contact factory.

1 STORAGE AND HANDLING

1.1 Protection

Keystone butterfly valves are delivered with
protection in accordance with the Keystone
Engineering Instructions, to protect the valve
seats and disc from damage. Wrapping and/or
covers should be left in place until immediately
before fitting to the pipe.

1.2 Storage

When valves are to be stored for some time
(2months or more) before being fitted, storage
should be in the original delivery crates or cases.

1.2.1 Storage conditions

The valves should be stored off the ground in a
clean, dry indoor area.
Protect the valve from temperature and humidity
extremes, and exposure to excessive dust,
moisture, vibration, deformations, sunlight and
ozone.

Recommendations

1. Temperature: storage temperature below
25°C, above 0°C preferable below 15°C.

2. Humidity: storage conditions should be such
that condensation does not occur, store in
a dry environment. Maximal 50% relative
humidity.

3. Light: valve rubbers should be protected
from light, in particular direct sunlight or
strong artificial light with high ultra violet.

4. Ozone: storage rooms should not contain
any equipment generating ozone. E.g. lamps,
electric motors.

IMPORTANT

Before valves are being installed or used
thefollowing actions are recommended.

1. Valves/parts have to be inspected and
thoroughly cleaned if required.

2. Rubber parts need to be greased with silicone
grease if not present anymore.

3. All surfaces in contact with seats have to be
thoroughly cleaned and greased with silicone
grease if stored for more than 5 months.

1.3 Handling

1.3.1 Packed valves

Lifting and handling of the packed valves in
crates should be carried out by appropriate
lifting equipment. If a fork lift truck is used,
appropriate fork hitches are required.
The lifting and handling of packed valves in
cases will be carried out in the lifting points.
The transportation of all packed material
should be carried out safely and according the
local safety regulations.

1.3.2 Unpacked valves

The lifting and the handling of these valves
has to be carried out by using appropriate
means and by respecting the carrying limits.
Thehandling must, preferably, be carried out
on pallets, protecting the machined surfaces
and seat to avoid damage.
When lifting the large dimension valves,
thesling and the hooking of the load must
be carried out by using the appropriate tools
(brackets, hook, fasteners) and load balancing
tools in order to prevent the valves from falling
or moving during the lifting and handling.
The valve may be lifted only by slings attached
to the flange holes or valve body; never to
theactuator or the valve opening.

Emerson.com/FinalControl

© 2017 Emerson. All Rights Reserved.

VCIOM-00752-EN 18/02

KEYSTONE FIGURE 320 BUTTERFLY VALVES

INSTALLATION AND MAINTENANCE INSTRUCTIONS

2 INSTALLATION

WARNING

For safety reasons, it is important to take
thefollowing precautions before you start work
onthe valve:

1. Personnel making any adjustments to
thevalves should utilize suitable equipment.
All required personal protection means should
be worn.

2. The line must be depressurized before
installing the valve.

3. Personnel trained in all aspects of manual and
mechanical handling techniques must carry
out handling of the valves.

4.

Misuse of the valve is not allowed. Forexample:
the valve, handles, actuators or other parts may
not be used as ‘climbing tools’.

5. Ensure that valve pressure/temperature
limitations marked on the identification tag
are within the service conditions. The trim
number on the valve’s tagplate identifies
the valve materials. See Product Manual for
valve specific P/T diagram and trim number
definition.

6. Ensure that valve materials are compatible
with the pipeline fluid.

2.1 Valve inspection

1. Carefully remove the valve from theshipping
package (box or pallet) avoiding any damage
to the valve or, in case of automated valves,
to the electric or pneumatic/hydraulic
actuator or instrumentation.

2. Confirm that the materials of construction
listed on the valve nameplate are
appropriate for the service intended and are
as specified.

3. It is not allowed to use third party spare
parts. In case of third party spare parts,
safeoperation is not guaranteed.

2.3 Valve installation

The valves are bi-directional and may be fitted
in either direction relative to the flow. The valve
will control flow equally in either direction.
Therecommended installation position is shaft
horizontal and the lower disc edge opening
down-stream. (Especially for slurry service
and media with a tendency for sedimentation).
For optimum valve control and smooth
performance, it is recommended to have a 10to
20 pipe diameters of straight run inlet piping
and 3 to 5 pipe diameters straight outlet piping.
A valve is no crow-bar. Do not use the valve
to spread the flanges. Seat damage might be
theresult.

NOTES

- The valve can be installed in the pipe-line either with
or without the actuator mounted on top of the valve.
Make sure that you can turn the disc cautious so you
can feel a mismatch resulting from a disc touching
the adjacent piping.

- Do not use the valve as a support of the pipe line
construction.

- Adjacent piping must be positioned so that minimal
piping stresses are transmitted to the valve flanges
during or after installation.

- Handling and lifting of the valves during installation
MUST be performed following the same instructions
described in previous paragraph ‘1.3 Handling’.

IMPORTANT

Mating flange faces should be in good condition
and free of dirt and/or inclusions. Both pipe
insides to be well cleaned.

YY

D max./min.

Q

2.2 Flange and pipe compatibility

Check matching of flange drilling pattern of
valve and pipe before assembly.
Flanges have to meet the following
requirements:

- The face inside diameter should be:
D min.: the valve Q-dimension + adequate

disc clearance.

D max.: the inside diameter (ID) of standard

pipe for the nominal size ISO 4200.

- If the flange (or pipe) is provided with a raised
face,

the diameter of this shall be at least 8 mm

larger than the YY-dimension of the valve.

The use of the flange-gaskets is not allowed
since it might damage the valve.
The Keystone seat-face design eliminates the
need for the gaskets.
Use flange bolting in agreement with
appropriate standard.

Do not use flange gaskets!

2