Nozzle check valves PN 25 and 40

Valvotubi Ind. noozle check valve PN 64 PN 64
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Article: 117-118
Flanges: UNI EN 1092-2 PN 25 - 40
Design DIN 3356 Installation: horizontal / vertical / oblique
APPLICATIONS ° Water supply ° Heating – conditioning systems ° Pumping stations ° Industry
- Fig. 117: flanges drilled PN 25
- Fig. 118: flanges drilled PN 40
Epoxy paiting suitable for drinking water applications.

The “nozzle” check valves should be used in order to grant a good performance of the anti-hammer effect. These valves are nozzle type, they ensure a rapid, shock free closing before any change in the flow direction, and a noiseless operation, as well as low water losses thanks to their design. For this reason, “nozzle” non return valves are suitable for both vertical, horizontal and oblique installation in those critical and severe pumps and compressor applications.

Materials
body ductile iron GGG40, EN-GJS-400-15 or cast steel
disc cast steel GS-C 25, GP-240-GH, or st.st.304
spring  stainless steel 304
stem  stainless steel 304
painting epoxy
 
DN H mm.   D mm. PN 25 / 40 Weight kg.
 40  120  150  6.5
 50  120  165  7.5
 65  150  185  11.5
 80  180  200  17
 100  240  235  27
 125  300  270  39
 150  350  300  53.5
 200  400  360 / 375  77.5
 250  450  425 / 450  135
 300  500  485 / 515  204
 350  600  555 / 580  390
 400  700  620 / 660  500
DN Nominal pressure Test pressure Mpa Max working pressure Mpa
mm BAR body seat 90°C
40-400 25 3,8 2,75 2,5
40-400 40 6 4,4 4,0