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Adjust the ball open and closed positions by means of the
actuator stop screws located at both ends (see Fig 24).
An accurate open position can be seen in the body flow
bore. Check that the yellow arrow on the actuator indi-
cates the ball flow opening position.

Keep fingers out

of the flow bore!

There is no need for stop screw adjustment if the actuator is
re-installed in the same valve. Drive actuator piston to the
housing end (open position). Turn the actuator by hand until the
valve is in the open position. Fasten the actuator in this position
as explained above.

Check the stop screw thread tightness. The threads must
be sealed using an appropriate non-hardening sealant, e.g
Loctite 225.
Check that the actuator is functioning correctly. Drive the
actuator piston to both cylinder ends and check the ball
position and its movement with respect to the actuator
(close: clockwise; open: counterclockwise). The valve
should be closed when the piston is in the extreme
outward position.
If necessary, change the position of the actuator pointing
cover to correctly indicate the valve open/closed position.

6.4

Installing the B1J-series actuator

Spring-return actuators are used in applications where valve
opening or closing movement is needed in case the air supply is
interrupted. The B1J type is used for spring-to-close operation;
the spring pushes the piston towards the cylinder end, the
extreme outward position. In turn, the B1JA type is used for
spring-to-open operation; the spring pushes the piston towards
the housing.

Spring-return actuators are installed in a manner similar to
B1C-series actuators, taking into account the following.

6.4.1 B1J-type

Install the actuator so that the piston is in the extreme
outward position. The cylinder must not be pressurized
and air supply connections must be open. The valve must
be in the

closed

position.

6.4.2 B1JA-type

Install the actuator so that the piston is in the cylinder end
position at housing side. The cylinder must not be pres-
surized and air supply connections must be open. The
valve must be in the

open

position.

The rest of the installation procedure is the same as in section 6.3.

6.5

Installing other makes of actuators

NOTE:

Metso Automation accepts no responsibility for compatibility
of actuators not installed by Metso Automation.

Other actuators can be installed only if they have an ISO 5211
actuator connection.

MALFUNCTIONS

The following Table 3 lists malfunctions that might occur after
prolonged use.

TOOLS

In addition to standard tools, the following special tools are
needed.

For removal of the actuator:
- extractor
For removal of the insert:
- removal tool
For removal of the locked seats:
- detaching tool
For locking of the seats:
- locking tool

These tools can be ordered from the manufacturer. Always give
the valve type designation when ordering.

ORDERING SPARE PARTS

When ordering spare parts, always include the following infor-
mation:

valve type designation (from the name plate or documents)
number of the parts list (or number of this manual), part
number, name of the part and number of pieces required.

Symptom

Possible fault

Toimenpiteet

Leakage through a closed valve

Wrong stop screw adjustment of the actuator Adjust the stop screw for closed position
Damaged ball surface

Turn the ball by 180°

Damaged seat(s)

Replace seat(s)

Ball cannot move freely

Clean the inside of the valve

Irregular valve movement

Impurities between the ball and seats