Cleaning; Installation; Welding Instructions - SPX FLOW APV DELTA PR2 Instruction Manual

APV
APV_PR2_UK-4_082017.qxp
Sampling valve
DELTA PR2
Instruction manual: UK - rev. 4
6.

Cleaning

- In the standard designs, the valve is cleaned during the pipe
cleaning process.
- By short-term interval-opening of the valve, the contact surface
between the valve shaft and the seat is cleaned, whereas liquid
drains off the sampling nozzle (D).
- The valve equipped with steam connection is cleaned and
sterilized through the connecting tubes.
7.

Installation

- The installation of the valve must be undertaken in such a way
that liquids can drain off the valve housing.
- The steam-resistant valve must be mounted in vertical position,
whereas the connecting tubes must be at the top and at the bottom.
- The standard valves can be welded direct into the pipelines
either in horizontal position (sampling connection to the bottom)
or in vertical position.
- Attention! Observe Welding instructions.
7.1

Welding instructions

PR2
- Before welding of the valves, the valve insert must be dismantled
from the housing. See to a careful handling to avoid damage.
- Welding may only be carried out by certified welders DIN EN ISO
9606-1). (Seam quality DIN EN ISO 5817).
- The welding of the valve housing must be undertaken in such a
way that deformation strain cannot be transferred from the outside
to the valve body.
- The preparation of the weld seam up to 3 mm wall thickness must
be carried out in butt manner as a square butt joint without air.
(Consider shrinkage!)
- TIG orbital welding is best.
- After welding of the valve housings or of the mating flanges and
after work at the pipelines, the corresponding parts of the
installation or pipelines must be cleaned from welding residues
and soiling. If these cleaning instructions are not observed, welding
residues and dirt particles can settle in the valve and cause
damage.
- Any damage resulting from the nonobservance of these welding
instructions is not subject to our guarantee.
- Welding directives for aseptic applications shall be drawn from the
AWS/ANSI Directives and EHEDG Guidelines.
UK
4