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4. Special Conditions for Safe Use
The SS-414 series are pressure regulators and should not be used as an isolation valve. When
adjusting Non-Venting (NV) option, the outlet pressure shall be reduced by venting
downstream of the regulator whilst simultaneously turning the adjusting mechanism anti-
clockwise. (*Ref. 6.1.3)
Sudden dynamic high-pressure inlet pressures should be avoided, and preferably be gradually
increased to protect against damage to the regulator. Any resonating within regulator may
cause the regulator to malfunction and it is not recommended to be used under these
conditions.
5. Hazardous Location Usage
This equipment has not been manufactured specifically for use in potentially explosive
atmospheres and as such an ignition hazard assessment has not been carried out on this
product. If the user should wish to use this product in such an environment where there may
be a potentially explosive atmosphere then it is the responsibility of the user to conduct an
ignition hazard assessment against 99/92/EC.
6. Servicing and Maintenance
Servicing and maintenance work on the SS-414 regulators should only be performed after
fully reading and understanding the Operating and Servicing Manual. Due to the
compressibility of gases, the operator should not endanger themselves or others by working
on this regulator without prior knowledge of the Health and Safety risks relating to handling
of technical gases. Any uncertainty should be clarified with Pressure Tech before working on
the regulator.
Pressure Tech Ltd recommends the use of the following Lubricants/Adhesives during
servicing:
-
Krytox GPL 205 lubricant: For the O-rings.
-
Molykote 1000 paste: For the adjusting screw.
-
Loctite 638: For the hard seat and seat nut Threads.
Prior to commencing service, please ensure that:
-
The equipment has been de-pressurised
-
The load spring has been de-compressed by turning the adjusting mechanism fully
anti-clockwise
-
Applications involving toxic, flammable or corrosive media have been fully purged and
decontaminated sufficiently for safe service.
To ensure the best possible results from servicing, when re-assembling the regulator and any
assemblies within it, ensure that all areas of the components and the regulator body are
cleaned and free from contaminants which may result in failure of the regulator.
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