HEROSE 05411, Operating Instructions Manual

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Operating instructions
22
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5 Assembly
5.1 Installation position
≤ DN150
With regard to the installation position, pay attention to the arrow showing the flow direction. When
mounting the check valve in a horizontal pipeline, a vertical position of the obturator is recommended
(cover facing upwards) or an inclination of up to 65° from the vertical.
DN200
With regard to the installation position, pay attention to the arrow showing the flow direction. When
mounting the check valve in a horizontal pipeline, a vertical position of the obturator is recommended
(cover facing upwards) or an inclination of up to 45° from the vertical.
5.2 Notices regarding the mounting
 Use suitable tools.
 Allen keys of sizes 6, 8, 10, 14, 19;
 Open-ended spanners;
 Torque wrench;
 TIG welding machine;
 Oxy-fuel welding machine;

Clean tools before the mounting.
 Use suitable transport and lifting equipment for the mounting.
 Open the packaging only directly before the mounting. Freedom from oil and grease for oxygen
(O
2
).
Check valves for oxygen are permanently marked with “O
2
”.
 Only install the check valve if the maximum operating pressure and operating conditions of the
plant correspond to the valving marking on the check valve.
 Remove protective caps or covers before mounting.
 Check the check valve for dirt and damage.
DO NOT install damaged or dirty check valves.
 Remove dirt and residues from the pipeline and check valve in order to prevent leaks.
 Avoid damaging the connections.
The sealing surfaces must remain clean and intact.
 Seal the check valve with suitable seals.
No sealant (sealing tape, liquid sealing tape) may enter the check valves.
Respect the suitability for use with O
2
.
 Connect pipelines in a force-free and torque-free manner.
Stress-free mounting.

In order to ensure trouble-free operation, no impermissible static, thermal or dynamic stresses
may be transmitted to the check valve. Observe reaction forces.
 Temperature-dependent changes in length in the pipework system must be compensated with
expansion joints.
 The check valve is supported by the pipework system.
 The check valve must be protected against dirt and damage during construction work.

Check the leak-tightness.