Mode Of Operation; Potential Equalization; Operating Leakage Reduction; Operating Leakage Drain - SPX FLOW APV DELTA DKR2 Instruction Manual

APV
APV_DKR2 ATEX_UK-0_022018.indd
spring for

potential equalization

Double Seat Ball Valve DELTA DKR2
ATEX Design
Instruction Manual: UK-0
5. Mode of Operation
5.2. Potential Equalization
A possible risk may result from a potential difference between the
components. With non-conducting media or empty pipline sections,
a conducting connection must be created between the valve
components. With double seat ball valves, this is reached by the
installation of a spring.
In explosive atmospheres, we generally recommend to ensure the
potential equalization between ball and housing by installation of the
spring mentioned below.
Designation:
* pressure spring
potential equalization
5.3. Operating leakage reduction
During the opening and closing process of the valve, a
certain quantity of liquids is lost as operating leakage
(see technical data).
Through a reconstruction of the valve, a reduction by about 40 %
can be achieved.
Complete retrofit kits to reduce the quantity of operating leakages
are available (see page 20).
5.4. Operating leakage drain
To discharge operating leakages via a pipeline, retrofit kits
with weld end are available (see page 18).
DN 25–100/Inch 1"–4"
Reference number:
000-60-06-010/13
UK
H311619
8