Spares for foil safety valves
|heating jacket on body||1.1|
|heating jacket on seat||3.1|
|spring retainer above||14|
|spring retainer below||15|
|socket head cap screw||22|
|hexagon head bolts||23|
|external retaining ring||26|
|hexagon head screw plug||28|
|hexagon head set screw||29|
|inductive response control||31|
Inserting/changing the membrane (foil)
Unscrew the threaded plug (28), screw the retaining screw (29) with its nut (30) through the cap (18) into the spindle (9) and make the nut finger-tight. Loosen the screws (20, 21) at the bottom of the housing and remove the valve seat (3) and cone (6).
The lead seal is to remain in position.
It is best to have the valve lying horizontally before inserting or changing the foil.
The old foil must be removed carefully. The surfaces between which the foil is stretched must be very clean and undamaged. Fit the new foil into the valve, insert the valve seat (3) and cone (6) (be careful to avoid damaging the foil) and fix it in place, adjusting the nuts (21) by hand. Then tighten the nuts in opposing pairs with 1/4 turns until the foil sits snug and evenly tensioned. Remove the retaining screw (29) from the cap and insert the threaded plug (28).