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Tubular flow sight glass made of PP / PVC or PVDF
The plastic tubular flow sight glass type 620K is used wherever steel or stainless steel is not suitable for contact with your process medium. Massive plastic flanges made of polypropylene (PP), polyvinyl chloride (PVC), or polyvinylidene fluoride (PVDF) encase a borosilicate glass tube sealed with NBR or Viton® O-rings. This design completely eliminates any contact between your process medium and steel parts.
The tubular flow sight glass 620K is delivered fully assembled from the factory and is maintenance-free during operation. Should any components of the fitting become damaged or worn, our team of technicians and salespeople will be on hand to provide replacement promptly. This greatly reduces downtime of your system.
The sight glass fitting type 620K is equipped with flange connections compatible with DIN EN 1092-1, but can be adapted on request to any flange standards or special connections.
| DN | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 150 |
|---|---|---|---|---|---|---|---|---|
| D [mm] | 115 | 140 | 150 | 165 | 185 | 200 | 220 | 285 |
| d [mm] | 32 | 40 | 50 | 63 | 75 | 90 | 110 | 160 |
| L [mm] | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 480 |
| L1 [mm] | 46 | 58 | 70 | 92 | 116 | 126 | 160 | 240 |
| LK [mm] | 85 | 100 | 110 | 125 | 145 | 160 | 180 | 240 |
| n x d2 [mm] | 4 x ø 14 | 4 x ø 18 | 4 x ø 18 | 4 x ø 18 | 4 x ø 18 | 8 x ø 18 | 8 x ø 18 | 8 x ø 22 |
