K-Patents PR-23-SD Generation 1 - Manual (Page 10)

Document/Revision No. BP-EN-SDGEN1 1.0 Effective: April 1, 2013
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NOTE: Be very careful not to drop or lose any parts that come loose when separating the
body from the assembly.
To disassemble the SDI valve, open the four (4) M10 allen key bolts with an 8 mm (5/16”)
allen key (
1).
Figure 7 Disassembling valve
4.4 Welding SDI Valve in Place
After you have disassembled the SDI valve, the valve body is welded onto the process pipe.
● The material of the SDI valve body is Duplex steel SAF2205 (EN 1.4462, ASTM
S32205/S31803). Choose the welding method and filler accordingly.
● See the attached drawings 2149 (MTG) and MTG472 for more detailed
welding instructions.
● Follow all local requirements for welding.
● K-Patents recommends complying with the applicable EN / ASTM standards.
● Consider the materials and shapes of the welded objects when performing welding
pre-processing (tools, cleaning, preheating).
● Consider the materials and shapes of the welded objects when performing welding
post-processing (postheating, fluxing).
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