| Range of application: acids, alkaline solutions, corrosive liquids, water, waste water, sludges, solid-containing, crystallizing and pasty media etc., in by-pass lines usable as relief valve. |
Fig. 801
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Construction: open coverage type, free passage, without stuffing box, with interchangeable rubber lining, with controlled operation, with mounted spring, with adjusting screw.
Materials: see table
Operating pressure: DN 15 – 80 max. 6 bar DN 100 max. 5 bar DN 125 – 150 max. 3 bar
Flange connection: DIN 2501, PN 16, DIN 2533 / EN 1092 – 2, PN 16
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Special constructions: hose inserts in foodstuff and heat resistant NR-quality, in Neoprene CR, Perbunan NBR, Butyl llR, Hypalon CSM, EPDM.
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DN | L | ØD | H | B | B₁ ¹) | weight approx. kgs |
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15 | 130 | 95 | 290 | 110 | 105 | 6 |
20 | 150 | 105 | 295 | 110 | 128 | 7 |
25 | 160 | 115 | 320 | 130 | 128 | 8,3 |
32 | 180 | 140 | 335 | 130 | 134 | 10,6 |
40 | 200 | 150 | 365 | 130 | 155 | 14,4 |
50 | 230 | 165 | 355 | 130 | 178 | 16,3 |
65 | 290 | 185 | 470 | 130 | 240 | 25,5 |
80 | 310 | 200 | 513 | 130 | 245 | 30 |
100 | 350 | 220 | 756 | 205 | 290 | 60 |
125 | 400 | 250 | 925 | 270 | 350 | 85 |
150 | 480 | 285 | 985 | 270 | 410 | 110 |
dimensions in mm ¹) max. valve width (not drawn) |
part | designation | material |
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1 | upper part of the body ¹) | GG 25 |
2 | lower part of body ¹) | GG 25 |
3 | rubber lining | NR (+85°C) |
4 | pressure part compl. | GGG |
5 | stem | stainless steel |
6 | building construction | steel |
7 | spring plate below | steel |
8 | spring | zinc-coated steel |
9 | nuts | steel |
10 | spring plate above | steel |
11 | bridge | steel |
12 | spring pressure screw | brass |
¹) parts 1 and 2 to be ordered together only |
Please quote the medium, concentration, temperature,
max. and min. working pressure in inquiries and orders.
We reserve the right to alter technical data.