Auxiliary Equipment; Valve Position Indication (Proximity Switches); Cleaning; Flow Areas - SPX FLOW APV DELTA DA3+ Instruction Manual

APV
APV_DA3+_ATEX_UK-0_022018.indd
fig. 6.1.
D 1
D 2
D 3
9
6. Auxiliary Equipment
6.1. Valve position indication
Proximity switches to signal the limit position of the valve shafts
can be installed at the actuator if requested (fig. 6.1.)
D1 = valve position "closed"
D2 = valve position "open" (DN 40 - 50, 1,5" - 2" only)
D3 = valve position "open" (DN 65 - 100, 2,5" - 4" only)
The use of valve position indicators which are approved for
the application in explosive atmospheres is compulsory!
We recommend to use our APV standard types for ATEX:
operating distance: 5 mm / diameter: 11 mm
Cable length: 2 m
Approval according to: KEMA 02 ATEX 1090X
ref.-No. 000 86-01-127/93; H130435
If the customer decides to use different valve position indicators,
we cannot take over any liability for a faultless function.
The use and operation of valve position indicators shall
be evaluated by the operator of the installation!
7.

Cleaning

Cleaning the DELTA DA3+ valve, one has to distinguish
between three areas:
7.1. The flow areas
The upper and lower passages are cleaned by the passing
cleaning liquid during the cleaning of the connected pipelines.
7.2. The seal surfaces
The seal surfaces of the upper area (upper shaft and seat seal)
and the lower area (lower shaft and seat seal) are flushed and
cleaned by cleaning liquid through lifting of the individual valve
shafts during the cleaning of the respective passage.
UK
Double seat valve
DELTA DA3+ - ATEX
Instruction manual: UK - rev. 0