IM-P173-01-EN-ISS1
CMGT
10
Note: Before actioning any installation observe the 'Safety information' in Section 1.
Although the valve has great structural integrity, severe misalignment and/or the pulling
effect of incorrect pipe length will have a detrimental effect on the valve and must be avoided.
Particular attention should be paid to correct pipe alignment such that the inlet and outlet
pipework and valve are all on the same axis.
Valves are for on/off applications and may be operated manually.
Valves should be installed where there is adequate space available so that they can be
conveniently operated and maintained.
Before installing a valve, check to ensure that size, pressure rating, materials of construction,
end connections, etc. are suitable for the service conditions of the particular application.
Care must be taken to ensure that all dirt which may have accumulated in the valve during
storage is removed before installation, maintain cleanliness during installation since the
introduction of dirt can result in damage to the valve seats and operating mechanism.
To minimise the danger of abrasive particles damaging the seats, pipeline strainers should
be fitted upstream of the valves.
Install the valve with the handle in a suitable position. The preferred position is with the
stem vertical and upwards. The valve can be installed in any position for gas service (see
Figure 4 opposite).
When used on steam services:
(The alternative with Cavity filler is not recommended when used on steam service)
1.
Fit a trapped drain pocket upstream of the valve.
2.
Open valve slowly to prevent the risk of waterhammer damage.
Do not mount the valve upside down for liquid service (Figure 3).
3. Installation
Fig. 3 Incorrect installation for liquid service
Valves should be installed into the pipeline in the fully closed position.
Always open valves slowly to avoid system shocks.
Summary of Contents for M70i ISO
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