SPX APV DELTA SV1B, Operating Manual, Page: 13 / 55

8
Modulating-Butterfly Valve with Top Control TC 8630
DELTA SV1B and SVS1FB
Operating manual : rev. 0
DELTA SV1B / SVS1FB-UK0.qxp / 09.2007
UK
9. Maintenance
- The maintenance intervals depend on the application of the valve
and should be determined by the operator carrying out regular
checks of the valve.
- There are a few wear parts on butterfly valves, principally
the SV seal, flange seals and bearings.
Diverse o-ring seals between actuator, adapter and positioner.
- It is recommended that spare seals and bearings are kept by the
user.
Complete seal kits for the valve service are available
(see spare parts lists).
- If damaged seals are replaced, generally all seals and bearings
should be changed.
- Dismantling and installation of seals according to Service
Instructions.
- All seals must be slightly greased before their installation.
Grease SV seal according to fig. - especially the cross bores.
- The inner parts of the actuator are maintenance free.
Attention! Use food-grade special grease being suited for
the respective seal material, only.
Recommendation:
APV-food-grade grease for EPDM, FPM, HNBR and NBR
(0,75 kg /can - ref. No. 000 70-01-019/93)
(60 g /tube - ref. No. 000 70-01-018/93)
or
APV-food-grade grease for VMQ
(0,6 kg /can - ref. No. 000 70-01-017/93)
(60 g /tube - ref. No. 000 70-01-016/93)
!!! Do not use grease containing mineral oil for EPDM seals !!!
!!! Do not use Silicone-based grease for VMQ seals !!!
SV - seal
grease
grease
grease