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These valves are for use only in vertical pipelines. Like glass spacers, they are fitted between standard buttress end components using longer coupling bolts.
Ball-type non-return valves are supplied complete with glass body, glass ball and PTFE retaining plate.
|
DN |
d |
L |
Cat Ref |
|
25 |
10 |
25 |
GNRD 1 |
|
40 |
15 |
33 |
GNRD 1.5 |
|
50 |
19 |
41 |
GNRD 2 |
|
80 |
30 |
65 |
GNRD 3 |