2
APV_SI2_UK-6_012019.indd
UK
Safety Valve
DELTA SI2
Instruction manual UK-rev. 6
APV
1. General Terms
This instruction manual has to be read carefully and observed by
the competent operating and service personnel.
We have to point out that we will not accept any liability for
damage or malfunctions resulting from the non-compliance with
this instruction manual. Descriptions and data given herein are
subject to technical changes.
2. Safety Instructions
Danger
!
- The technical safety symbol draws your attention to important
directions for operating safety. You will find it wherever the activities
described are bearing risks of personal injury.
- Depressurize the line and cleaning system before any maintenance
work.
- Risk of injury by sudden valve operation
- Observe Service Instructions to ensure safe maintenance ofthe
valve.
- Do not remove the lead seal (malfunction of valve and loss of
guarantee).
3. Intended Use / Mode of Operation
The component-tested SI2 safety valve is used in those plant
sections which have to be protected against excessive pressure.
In the beverage and food industry as well as in pharmaceutical
applications, the valve protects tanks and other containers against
inadmissible excess pressure.
The SI2 safety valve prevents exceeding of the allowed operating
pressure by more than 10 %.
If the adjusted response pressure after opening falls below max.
10% with gases and max. 20 % with liquids, the valve closes.
The flow direction is always from
A
B
.
Arbitrary, constructive changes at the valve will influence safety
as well as the intended functionality of the valve and are not
permissible.
A
B
C
seat lift cylinder
housing
