Installation, Operation and Maintenance Manual
󲷇H-A058-E-12󲷈 Diaphragm Valve, True Union Diaphragm Valve (15-50mm, 1/2”-2”) Pneumatic Actuated Type AI
Socket type
(Material : PP, PVDF )
Spigot type
(Material : PP, PVDF)
Strap wrench
Sleeve welder or automatic welding machine
User’s manual for sleeve welder or automatic welding machine
1) Loosen the union nut with a strap wrench.
2) Remove the union nut [26] and the end connector [25e].
3) Lead the union nut [26] through the pipe.
4) For the next step, refer to the user’s manual for the sleeve welder or the automatic welding machine.
5) After welding, make sure that the O-ring (C) [27] is mounted.
6) Set the end connector [25e] and the union nut [26] directly without allowing the O-ring (C) [27] to come off.
7) Tighten union nut [26] on each valve until hand tight.
8) Using a strap wrench tighten union nuts uniformly on each side approx. 90°- 180°turns, 1/4 to 1/2 turns.
* Take care not to over-tighten the Union Nut.
(The valve can be damaged.)
Necessary items
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