Type LTR 43
Operating and service instructions for
Triple offset control butterfly valves
Nominal diameter
NPS 3 - 100 / DN 80 - DN 2500
Nominal pressure
ANSI Class 150 - 2500 / PN 10 - PN 400
Your specialist for triple offset butterfly valves
Safety instructions
ATTENTION! LEUSCH valves may only be mounted, put into operation
and maintained by specialist and trained personnel in compliance with
recognised technical rules as well as additional regulations of the coun-
try/location of destination, as applicable.
It should be ensured that employees and third parties are not endangered
during any work.
ATTENTION: DANGER TO LIFE! When the valve is fitted with an actuator
(e.g. pneumatic, electrical or hydraulic) the following applies: Do not put
any parts of your body / limbs inside the valve when an actuator is in-
stalled. Sudden/unexpected moving parts (e.g. through acting spring actu-
ating forces) can cause life-threatening injuries.
During all installation work on the valve, it should be ensured that the
valve is de-pressurised along with all
actuators
and accessories or adja-
cent pipelines, if applicable.
2017-01
Table of contents
Safety regulations ..............................................1
Instructions, intended usage ..............................2
Transport, storage and handling.........................3
Installation .........................................................3
Commissioning, operation, de-commissioning ....4
Function ............................................................5
Maintenance and adjustment .............................5
Position Indicator and key direction ....................7
Installing the actuator .........................................7
Replacement of the Gland Packing ....................8
Replacement of the Cover Seal..........................9
Replacement of the Seating System ................10
Labelling ..........................................................11
Disposal ..........................................................11
Service .......................................................11-12
