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IM-P316-03 

CTLS Issue 14

2

Safe operation of the unit can only be guaranteed if it is properly installed, commissioned and 

maintained by a qualified person (see Section 1.11) in compliance with the operating instructions. 

General installation and safety instructions for pipeline and plant construction, as well as the 

proper use of tools and safety equipment must also be complied with.

1.1 Intended use

Referring to these Installation and Maintenance Instructions, Name-plate and Technical Information 

Sheet, check that the product is suitable for the intended use/application. The requirements of the 

Pressure Equipment Directive (PED) have been satisfied and, if applicable, the product accordingly 
bears the 

 mark:

i) The product has been specifically designed for use on the fluids specified in the Technical 

Information Sheets. (These fluids are in Group 2 of the above mentioned Pressure Equipment 

Directive). The product’s use on other fluids may be possible but, if this is contemplated, 

Spirax Sarco should be contacted to confirm the suitability of the product for the application 

being considered.

ii) Check material suitability, pressure and temperature and their maximum and minimum values. 

If the maximum operating limits of the product are lower than those of the system in which it 

is being fitted, or if malfunction of the product could result in a dangerous overpressure or 

overtemperature occurance, ensure a safety device is included in the system to prevent such 

over-limit situations.

iii) Determine the correct installation situation and direction of fluid flow. 
iv) Spirax Sarco products are not intended to withstand external stresses that may be induced 

by any system to which they are fitted. It is the responsibility of the installer to consider these 

stresses and take adequate precautions to minimise them.

v) Remove protective covers from all connections and protective film from all name-plates, where 

appropriate, before installation on steam or other high temperature applications.

1.2 Access

Ensure safe access and if necessary a safe working platform (suitably guarded) before attempting 

to work on the product. Arrange suitable lifting gear if required.

1.3 Lighting

Ensure adequate lighting, particularly where detailed or intricate work is required.

1.4 Hazardous liquids or gases in the pipeline

Consider what is in the pipeline or what may have been in the pipeline at some previous time. 

Consider; flammable materials, substances hazardous to health, extremes of temperature.

1.5 Hazardous environment around the product

Consider;  explosion risk areas, lack of oxygen (e.g. tanks, pits), dangerous gases, extremes of 

temperature, hot surfaces, fire hazard (e.g. during welding), excessive noise, moving machinery.

1. Safety information

Summary of Contents for SV615

Page 1: ...pply 4 Handling 5 Before fitting the valve 6 Installation 7 Damage prevention 8 Commissioning 9 Testing during use 10 Guidelines for setting 11 Maintenance Copyright 2019 Printed in GB 3160050 14 SV61...

Page 2: ...stem in which it is being fitted or if malfunction of the product could result in a dangerous overpressure or overtemperature occurance ensure a safety device is included in the system to prevent such...

Page 3: ...ctive clothing is required by yourself and or others in the vicinity to protect against the hazards of for example chemicals high low temperature noise falling objects and dangers to eyes and face 1 1...

Page 4: ...uct is recyclable and no ecological hazard is anticipated with its disposal providing due care is taken However if the valve is fitted with a Viton seal special care must be taken to avoid potential h...

Page 5: ...nts 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 Notified Body is the Royal and Sun Alli...

Page 6: ...um 150 C Viton seat Minimum 20 C Maximum 200 C Performance data Overpressure Steam 5 Gas 10 Liquid 10 Blowdown limits Steam gas 10 Liquids 20 Derated coefficient of discharge values Steam gas 0 71 Liq...

Page 7: ...0 194 12 1 3 DN20 1 5 55 44 229 20 2 4 DN25 1 1 6 60 48 242 24 2 9 DN32 1 2 7 25 70 58 279 29 4 2 DN40 1 2 9 25 81 67 365 37 8 8 DN50 2 3 11 50 96 80 420 46 13 0 Sanitary clamp DN15 1 3 40 55 209 12 5...

Page 8: ...ng end plate Brass BS EN 12165 CW617N 8 Stem Stainless steel BS 970 431 S29 9 Adjustment screw Brass BS 2874 CZ 121 10 Lever Zinc plated SG iron 11 Pivot pin Stainless steel AISI 304 12 Circlip Stainl...

Page 9: ...IM P316 03 CTLS Issue 14 9 Soft seal disc option 14 Sealed cap option 15 16 18 4 11 9 7 10 1 3 12 6 5 2 13 17 8 Fig 3 19 1 Sanitary clamp version Screwed version...

Page 10: ...Viton Finish P Electroless nickel plated ELPN Q ELNP with stainless steel name plate Size DN15 DN20 DN25 DN32 DN40 and DN50 DN15 BSPF x BSPF BSPF x BSPF Connection inlet x Outlet NPTF x NPTF Clamp x...

Page 11: ...re see Testing during use Section 9 Normally the valve will be supplied set at the required pressure and sealed Setting of Spirax Sarco safety valves must only be carried out by authorised competent p...

Page 12: ...same nominal bore as the safety valve outlet It is the responsibility of the installer owner to ensure that this requirement has been met by carefully considering the nominal bore and length of the d...

Page 13: ...IM P316 03 CTLS Issue 14 13 Fig 4 Fig 5 Discharge to safe area To safe small bore drain area Not drawn to scale...

Page 14: ...other parts of the valve When normal pressure is restored it is possible that the valve will leak 7 1 Solution The safety valve should be fitted 8 10 pipe diameters downstream of any converging or div...

Page 15: ...dard open type levers to enable testing for correct operation during use Do not operate the lever unless the system pressure is at least 85 of the safety valve set pressure Do not use any tool or mech...

Page 16: ...e should be set The maximum set pressure in accordance with BS 5500 is the safe working pressure of the plant it protects and the valve must achieve its rated capacity with an overpressure of no more...

Page 17: ...rig at 3 above the required set pressure This does not apply if the valve is set on steam 10 3 Valves supplied unset Valves supplied unset to approved agents will include a set pressure tag to be sta...

Page 18: ...ty information Section 1 It is recommended that Spirax Sarco safety valves are returned to your local Spirax Sarco agent for a thorough overhaul periodically please read Returning products Section 1 1...

Page 19: ...IM P316 03 CTLS Issue 14 19...

Page 20: ...IM P316 03 CTLS Issue 14 20...

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