Grundfos Dosing Spear

Injection units connect the dosing line with the process
line. They ensure a minimum counterpressure of
0.7 bar, and avoid backflow of the dosing liquid.
In general, they include:
• Injection pipe. PP, PVC and PVDF versions can be
shortened.
• Spring-loaded non-return valve with Tantal spring.
• Hose connection set: 4/6 mm, 6/9 mm, 6/12 mm,
and 9/12 mm.
• Pipe connection set: threaded, Rp 1/4″, female
(stainless steel).

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