Installation, Operation and Maintenance Manual
Control Valves Electric Actuated Type M 23
Body material: PVDF
9) Pull the piston guide [60] out of the piston (A) [5].
10) Loosen the stopper [59] and the packing holder [58] and remove them from the stand [19].
11) Loosen the orifice [3] with an orifice removal tool and remove it.
<Assembly>
Procedure
1) Before starting assembly, silicone grease (fluorine grease is suitable for the chlorine fluid) should be spread on the
sliding surfaces and sealing parts, for instance, body [1], piston (A) [5], bush [7] (body material: U-PVC), piston
guide [60] (body material: PVDF) and each O-rings.
2) Carry out the assembly work in the reverse procedure from item 11).
*When tightening the boltnut [41], tighten them lightly, and open and close the valve a few times. Make sure that
there isn’t any problem, then tighten them up completely.
Nominal size: 50, 80, 100mm (2”, 3”, 4”) / Body material: U-PVC
Protective gloves Safety goggles Spanner wrench
Allen wrench Marker pen
<Disassembly>
Procedure
1) Completely discharge fluid from pipes.
2) Open the control valve by half and remove the electric wiring.
*Turn off the power source and then shut off the signal.
3) Loosen and remove the boltnut of coupled flange.
4) Remove the valve from pipe.
5) Put a mark between the actuator [20] and body [1] with a marker pen.
6) Remove the four pairs of bolt-nut [41] connected the actuator [20] and the body [1].
7) Lift the actuator [20] with stand [19] up and remove it from the body [1]
*Lift the actuator [20] up gently and perpendicularly. (Parts may be scratched.)
8) Loosen the bolt of the indicator [38] fixed the coupling [36] and the actuator shaft
9) Loosen the screw (B) [54].
10) Turn the coupling [36] counterclockwise and remove it from the piston (A) [5].
11) Pull the bush guide [8] out of the piston (A) [5].
12) Remove the stop ring [9] from the piston (A) [5].
13) Pull the bush [7] out of the piston (A) [5].
*Plug [4] can not be removed because it is screwed in the piston (A) [5] after adhered.
(If removed by force, the valve may be damaged.)
<Assembly>
Procedure
1) Before starting assembly, silicone grease (fluorine grease is suitable for the chlorine fluid) should be spread on the
sliding surface and sealing parts, for instance, body [1], piston (A) [5], bush [7], bush guide [8], each O-rings.
2) Carry out the assembly work in the reverse procedure from item 13).
*When tightening the boltnut [41], tighten them lightly, and open and close the valve a few times. Make sure that
there isn’t any problem, then tighten them up completely.
Necessary items
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