Pentair SUDMO P740 - Welding; Welding Filler; Weld Seam Finishing; Interior

Operating Instructions
Disk type non-return valves
RV Solid series
Type: P740, P741, P745, P750 and P760
DN 010 – 150, OD 0.50” – 6.00”, ISO 008 – 125
13 / 34
Copy of the original operating instructions
BAA RV Solid
en
5.6. Welding
 Connect the forming gas.
 Tack at 3 – 4 tack welds.
 Weld valve  Type of welding TIG manual or orbital (automatic welding).
5.7. Welding filler
Material allocation
Material of parts to
be welded
Suitable welding filler
1.4430 1.4440 1.4519
1.4404 X
1.4435 X X X
5.8. Weld seam finishing
5.8.1. Interior
Depending on requirements, for example
 untreated.
 scotching (at accessible points).
5.8.2. Exterior
Subsequent-treatment procedure
 Pickling - ensure proper disposal of pickling paste
 Brushing
 Grinding
 Polishing
5.9. Cleaning of the valve
Clean thoroughly before assembly.
5.10. Valve assembly
Assemble according to the assembly instructions (see chapter “Disassembly - Assembly”).