9
12
Screw
13
Hand wheel
15
Bonnet
16
Gland follower
17
Gland
18
Stud
19
Nut
5.4 Function
5.4.1 ECOLINE VA
The valves consist of the pressure-retaining parts, i.e. body
(1) and bonnet (15), and the functional unit.
The body (1) and bonnet (15) are connected by stud (18) and
nut (19), and joint is sealed off by the gasket (6). The trim
mainly consists of the valves disc (2), stem (5) and disc nut
(4), the actuating element is a hand wheel (13) or actuator.
The stem (5) passage in the bonnet (15) is sealed by the
packing (7) which is tightened by means of two nuts (10) on
the top of gland follower (16).
The contact faces of body (1) and / or valve disc (2) are
made of rust-proof materials.
5.4.2 ECOLINE RA
Non-return valves are check valves which close
automatically if fluid flow is reversed. Non-return valves with
separate cover consist of the pressure-retaining components
of body (1) and cover (7), as well as the functional unit.
The body (1) and cover (7) are connected by studs (6) and
nuts (5), and the joint is sealed off by the gasket (4).
The check valves disc (2) is guided in the cover (7). The
position of the check valve disc (2) is determined both by the
flow conditions and by the spring (3) if any.
5.4.3 ECOLINE FY
Strainers feature the same pressure-retaining components
and sealing design as non-return valves with separate cover
(4). The strainer insert (2) is clamped between the body seat
and the cover, where it removes particles from the flow,
depending on the mesh size selected.
6 Installation
6.1 General
As a rule, the engineering contractor, construction company
or operator/user are responsible for the positioning and
installation of the valves.
Planning and installation errors may impair the reliable
function of the valves and pose a substantial safety hazard.
Compliance with the following requirements is of particular
importance.
The piping must be laid such that detrimental
thrust and torsional forces are kept away from
the valve body during installation and operation to avoid both
leakage and damage to de body
The caps on the connection ports shall be
removed immediately prior to installation.
When painting the pipes and valves, do not apply
paint to bolts, stem and plastic components (valve
function will impair), if construction work is still in progress,
the valves must be protected against dust, sand and building
material etc. (cover with suitable means).
Do not use valve hand-wheels as footholds!
For safety reasons, Valves and pipes system
operated at high (>50
℃
) or low (<0
℃
)
temperatures must be insulated, or a warning sign must
point out the risk of personal injury involved when touching
the hot or cold components
Valves with external moving elements must be fitted with
protective covers, or other suitable measures must be taken
to prevent accidents.
Valves used as end-valve in a pipeline should be
protected against unauthorized or unintentional
opening to prevent damage to property and/or personal
injury.
6.2 Installation position
The valve bodies are marked with an arrow indicating the
flow direction. if necessary. The valves must be installed in
Caution
Caution
