IM-P316-03 CTLS Issue 14
5
Safety valve
Reducing
valve
Condensate
Steam supply
2.1 Description
The SV615 full lift, full nozzle safety valve is suitable for steam, air, inert industrial gas and non-hazardous
liquid service.
Available types
Valves are available in sizes ranging from DN15 to DN50 and have a bronze body with female screwed
connections and a stainless steel nozzle. There is also the option of a sanitary clamp inlet connection on
the smaller sizes. All valves have a closed bonnet with either a lifting lever or closed cap (gas tight cap
option). An optional soft seal disc is available in Nitrile (for air up to 120 °C), EPDM (for water) or Viton (for
air up to 200 °C).
Standards and approvals
The SV615 complies with the requirements of EN ISO 4126:2004 and carries the mark indicating full
compliance with the requirements of the Pressure Equipment Directive (PED). The Approval Authority and
Notied Body is the Royal and Sun Alliance.
Seat tightness complies with ASME/API STD 527- Revision 2002.
Certification
A manufacturers' Typical Test Report is provided as standard for each valve which will include valve set and
hydraulic test pressure. Also available on request is material certication in accordance with EN 10204 3.1.
2.2 Sizes and end connections
DN15, DN20, DN25, DN32, DN40 and DN50.
Inlet connections
Screwed BSP (BS 21 parallel) female
Screwed NPT female
1" Sanitary clamp compatible (DN15, DN20 and DN25 sizes only)
BS 4825/ISO 2852/DIN 32676
Outlet connections Screwed BSP (BS 21 parallel) or NPT female
Small bore drain
To safe area
2. General product information
Fig. 1
A typical installation of a safety valve, downstream of a pressure reducing valve station
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