Neles Easyflow J7 DN15, Installation Maintenance And Operating Instructions

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IMO-240 EN - Issue 7/2020 6
15. Install the body seal (17) and body gasket (18) onto the end
piece (2).
16. Carefully place the end piece (2) on top of the body (1) and
loosely install the body nuts (20). Lightly lubricate stud threads
and face of nut with anti-seize grease. Tighten the body nuts in
an alternating sequence across the body, gradually increasing
the tightening torque in multiple steps to applicable torque
from Table 1 .
Table 1
Body Nut Tightening Torque, N.m
Stud size
Carbon steel Grade B7 Stainless steel Grade B8M
1/4 - 20 UNC 15 12
5/16 - 18 UNC 30 25
3/8 – 16 UNC 50 40
7/16 – 14 UNC 75 65
1/2 - 13 UNC 120 100
9/16 – 12 UNC 160 150
5/8 – 11 UNC 230 200
3/4 - 10 UNC 400 370
7/8 – 9 UNC 650 500
17. After fully tightening the stem seal and body joint flange, operate
valve to verify smooth operation during opening and closing.
18. If the actuator was removed, reinstall and set the actuator
stops as described in the ACTUATOR MOUNTING
INSTRUCTIONS Section.
4.6 TESTING THE VALVE
WARNING:
WHEN PRESSURE TESTING, EXERCISE CAUTION
AND MAKE SURE ALL EQUIPMENT USED IS IN GOOD
WORKING CONDITION AND APPROPRIATE FOR THE
INTENDED PRESSURE.
If the valve is to be tested prior to returning to service, make sure
the test pressures are in accordance with an applicable standard.
When testing the valve for external tightness, keep the ball in the
half open position.
If testing for seat tightness, please contact Neles for advice.
WARNING:
WHEN PERFORMING ANY TESTS, NEVER EXCEED
THE MAXIMUM OPERATING PRESSURE OR MAXIMUM
SHUT-OFF PRESSURE LISTED ON THE IDENTIFICATION
PLATE.
5. ACTUATOR
WARNING:
BEFORE INSTALLING THE VALVE AND ACTUATOR, BE
SURE THAT THE INDICATOR POINTER ON TOP OF THE
ACTUATOR IS CORRECTLY INDICATING THE VALVE
POSITION. FAILURE TO ASSEMBLE THESE PRODUCTS
TO INDICATE CORRECT VALVE POSITION COULD
RESULT IN DAMAGE OR PERSONAL INJURY.
CAUTION:
When installing or servicing a valve/ actuator assembly, the best
practice is to remove the entire assembly from service.
CAUTION:
An actuator should be remounted on the valve from which it was
removed. The actuator must be checked and readjusted for proper
open and close position each time it is remounted.
WARNING:
THE VALVE BODY AND MOUNTING INTERFACE
HAS BEEN DESIGNED TO SUPPORT THE WEIGHT
AND OPERATION OF NELES ACTUATORS AND
RECOMMENDED ACCESSORIES. USE OF THIS
INTERFACE TO SUPPORT ADDITIONAL EQUIPMENT
SUCH AS PEOPLE, LADDERS, ETC. MAY RESULT IN THE
FAILURE OF THE VALVE OR ACTUATOR AND MAY CAUSE
PERSONAL INJURY.
WARNING:
BEWARE OF BALL MOVEMENT!
KEEP HANDS, OTHER PARTS OF THE BODY, TOOLS
AND OTHER OBJECTS OUT OF THE OPEN FLOW PORT.
LEAVE NO FOREIGN OBJECTS INSIDE THE VALVE OR
PIPELINE. WHEN THE VALVE IS OPERATED, THE BALL
FUNCTIONS AS A CUTTING DEVICE.
5.1 ACTUATOR MOUNTING
INSTRUCTIONS
1. When a spring-return actuator is being mounted, the valve should
be in the closed position for spring-to-close operation or in the
open position for the spring-to-open operation. When an electric
or double-acting pneumatic actuator is being mounted, the valve
position should correspond to the indicated actuator position.
2. Assemble actuator onto the valve, ensuring full engagement
between the stem and actuator drive, and the actuator fully
contacts the mounting face on the valve.
3. Tighten actuator mounting screws to the torque listed in
Table 2
.
CAUTION:
Do not exceed the tightening torque. Applying excessive tightening
torque can damage the aluminum threads in the actuator body.