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1. Description
The SS-231 is a versatile non-venting (NV), piston sensed
‘
medium-flow
’
forward reducing
pressure regulator for gas and liquid applications.
The SS-231 as standard is a non-venting regulator, which features a balanced main valve
design as standard which minimises load on the seat and provides stable pressure control
under decaying inlet conditions. Additionally, servicing is simplified with easy access to the
seat cartridge from the base of the regulator.
Operating at depths of up to 3,000 metres (10,000ft), the SS231 features a (NV) 1:1 ratio
sensor assembly, as standard for sub-sea applications and incorporates, the option of the
following top works assemblies, dependant of the functionality requirements:
-
‘
SR
’
- Spring Loaded with Reference to External Sea Water Pressure.
(*Ref. 6.1.4 for
Reference Port detail, circled in red)
-
‘
SS
’ –
Spring Loaded with Sealed Chamber to remain completely unaffected by the
external sea water environment conditions. (
Without Reference port
)
Pressure Equipment Directive (PED) 2014/68/EC Declaration
This equipment is designed and manufactured in accordance with Sound Engineering Practice
(SEP) Article 4, Paragraph 3 of the directive 2014/68/EC. As such, CE marking must not be
applied. The equipment is marked under section 3.3 of Essential Safety Requirements of the
directive.
2. Installation
Before system start-up, it is recommended that all lines should be free from any form of
contaminations, as those can affect regulator performance and functionality. all systems be
pressure tested, leak tested and purged with an inert gas such as nitrogen.
Prior to placing into service ensure that the regulator is in the fully closed position, with the
adjusting mechanism turned completely anti-clockwise.
For pre-set regulators the supply pressure should be increased gradually and also to be
mindful that downstream pressure will be present.
Check the model number reference to ensure that the pressure range complies with the
installation requirements.
Visually inspect the regulator for any signs of damage or contamination. If any foreign
materials are present and cannot be removed from the regulator, or if the threads on the
regulator appear to be damaged, please contact the office immediately to arrange for the
regulator to be returned for service.
The Inlet and Outlet ports are clearly marked. Select the correct size and type of connection
fittings for these ports which are indicated in the regulators part number. Both British