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Table of Contents
SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES
OPERATING INSTRUCTIONS
Before installation these instructions must be fully read and understood
Type
Series S, types SO, SC, SB, SOH full-lift
safety valves
Orifice letter D - Z
Design
• Spring-loaded
• With DIN and ANSI connections
• According to API Standard 526
• According to AD A2, TRD 421
For the application of a pneumatic drive A 160
see corresponding operating instruction
VCIOM-02239.
Observe design data on the nameplate!
Emerson.com/FinalControl
ATTENTION
This operating instruction does not specify the
extent of delivery. It is valid for several sizes,
designs, accessories and additional devices.
It contents generally exceeds the contractual
determined extent of delivery.
1 DANGER AND WARNING INDICATIONS
The construction of the Sempell safety valves
of the series S corresponds to the standard
technology and the valid safety regulations.
Nevertheless, improper use or improper
installation can cause risks for the personnel
or can lead to restrictions in regard of the
operational safety. Therefore, the Sempell
GmbH recommends the operator of the safety
valves to take appropriate measures and make
sure that the present operating instructions
are read and understood by the assigned
personnel.
APPLICATION LIMITS
It is only allowed to use the valves according to the
details of this operating instruction and according
to the parameters and application cases agreed
in the delivery contract (see nameplate). The
application of the valve has to take place adequate
to the medium tolerances of the used materials.
WARNINGS FOR THE OPERATING AND
MAINTENANCE PERSONNEL
Before commissioning and maintenance works
familiarise yourself with the legal accident
prevention regulations, the local safety
instructions and this operating instruction and
observe them.
Use the safety valve and its individual parts and
accessories only for the purpose intended by us.
© 2017 Emerson. All rights reserved.
MA.280.01.1215 E
VCIOM-02373-EN 16/07
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Related Manuals for Emerson Sempell S Series
Summary of Contents for Emerson Sempell S Series
- Page 1 Observe design data on the nameplate! instructions and this operating instruction and observe them. Use the safety valve and its individual parts and accessories only for the purpose intended by us. MA.280.01.1215 E VCIOM-02373-EN 16/07 Emerson.com/FinalControl © 2017 Emerson. All rights reserved.
- Page 2 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS Please observe the following points besides • Temporary or permanent connection of the notes given in the text devices not authorized by us • Danger of burning at safety valves and with The actual scope of delivery may deviate from their connected lines while operating under increased temperature.
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Page 3: Operation
SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 3 OPERATION Moisture To prevent the formation of condensate, avoid 3.1 Warning indications for the operation moist storerooms. A relative humidity of below 65% is at best. Observe safety regulations! Lighting ATTENTION The products of elastic materials are to protect... - Page 4 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 3.5 Connection of lines • Proceed with caution and observe the information on the packaging when unloading 3.5.1 Inlet line the transport items on delivery and when If possible arrange safety valve directly at the transporting internally.
- Page 5 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS ADMISSIBLE BACK PRESSURES Valve type Medium Maximum back pressure SO.. Gases/vapours Superimposed back pressure constant 0% p Superimposed back pressure variable 0% p Built-up back pressure 15% p SC..
- Page 6 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 3.9 Adjusting the set pressure For orifice D to T1 loosen the 4 cap bolts (21) and for orifice U to Z the four hexagonal ATTENTION screws (21.1). Remove the cap top (20) and put it reversed on place again.
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Page 7: Troubleshooting
SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 3.10 FUNCTIONAL DIFFERENCES Gases / Vapours: Opening excess pressure +5% p or 0.1 bar for p smaller than 3 bar Closing excess pressure -10% p or 0.3 bar for p smaller than 3 bar By means of the adjusting ring (5) a closing pressure difference of -7% p or 0.2 bar can be reached for p smaller than 2 bar. - Page 8 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 4 INSPECTION AND MAINTENANCE WORKS • Replace spring (15) in case of corrosion or temperature damage and adjust set pressure Determine inspection intervals in dependence again (section 3.9). on response frequency and operating •...
- Page 9 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 5.2 Disassembling indications 5.4 Operating materials 5.5 Removing the valve bonnet Observe disassembling sequence to preserve 5.4.1 Lubricating the removable valve components If only the seat shall be lapped, the complete the valve set pressure.
- Page 10 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 5.6 Dismantling of the safety valve 5.7 Disassembly and installation of disc 6.2 Assembling of the dismantled safety valve Removal or disassembly of the possibly At valves with screwed nozzle mounted pneumatic drive A 160 see operating instruction SEMSH-0067.
- Page 11 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS Insert disc (3) with disc retainer (4) into the disc For some valves of the size ‘T’ to ‘Z’ the spring holder (7) (see section 5.6). Put the assembly (15) must be precompressed before assembling on the nozzle (2) into the body (1).
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Page 12: Spare Parts
SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 7 METHODS TO PRODUCE SUPERFINISHED 7.2 Lapping area site SEALING SURFACES As a rule, there is no lapping machine available so only a manual method or the method ATTENTION described in section 7.1.2 can be used. -
Page 13: Assembly Drawings
SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS 10 ASSEMBLY DRAWINGS PARTS LIST Part Name Valve orifice D to J and below the pressure rates 09 (160)K and 03 (040)L. Body Nozzle Valve seat TYPE SC.. Disc •... - Page 14 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS TYPE SO.. TYPE SB.. Safety valve with open bonnet for Safety valve with balancing bellows and vented bonnet steam and inert gases for vapours, gases and liquids 49, 50 49, 50 41, 42...
- Page 15 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS BODY AND ADJUSTING RING DESIGNS FLANGE CONNECTION ACCORDING TO DIN Without adjusting ring With adjusting ring Type SC Type SCR Type SO Type SOR Type SB Type SBR FLANGE CONNECTION ACCORDING TO ANSI Without adjusting ring With adjusting ring...
- Page 16 SEMPELL SERIES S, TYPES SO, SC, SB, SOH FULL-LIFT SAFETY VALVES OPERATING INSTRUCTIONS DISC HOLDER AND SPINDLE DESIGN M to T and above the pressure rates 09 (160) K U to Z and 03 (040) L BALANCED PISTON 144, TYPE SO D to T T1 to Z 36.4...
- Page 17 08 (160)H and 06 (063)J 08 (160)H and 06 (063)J U to Z DESIGN TYPE SOH J to T T1 to Z 36.3 36.2 36.1 10.1 10.1 10.2 10.4 10.3 Detail X: screw locking by deformation © 2017 Emerson. All rights reserved.