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
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Copy of the original operating instructions
BAA RV Solid
5. Welding and mounting instructions
5.1. General instructions
Information/notice
Welding work must only be carried out by qualified skilled personnel
(DIN EN ISO 9606-1 W8).
Pentair Südmo will not be liable for damages caused as a result of improper use.
5.2. Delivery condition of the disk type non-return valve
Factory-tested
Completely assembled
5.3. Installation guidelines
5.3.1. Installation space
Determine and define the terminal axes before mounting. Refer to the dimension drawings for the installation dimen-
sions.
Ensure that there is sufficient space available for both operation and servicing.
5.3.2. Installation
Exclude tensile and compressive stresses.
5.4. Welding guidelines
Field of application: Welded connections of weld-on fittings with pipes according to DIN 11850 series
1, 2; ASTM A270; DIN EN ISO 1127
Welding procedure: TIG (tungsten inert gas welding)
Weld seam: Preparation of weld seam according to DIN 2559 (edge forms I / for I seams)
Weld seams correspond to DIN EN ISO 5817
Evaluation group B (high)
5.5. Weld seam preparation
Saw off the pipe ends planar at a right angle and debur them (pipe saw M882).
Align the welding ends of the valve body and piping radially and axially for a flush fit (centering device).
Information/notice
Avoid too large a gap at the flush-fitting welding ends.
Make sure that enough forming gas arrives at the welding seam.
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