Operation instruction 

   FWS25-3 of Manual control valve is mainly used to control the works of water filter system, Such as prefilter of RO system ,household centre water purifier and boiler softener . It could filter, backwash, and rinse .The material of the body is high quality engineering plastic(to strengthen ABS) ,high precision ceramics as seal, The advantage is that reliable sealing,large flow, light operation,good corrosion-resistant and long performance life etc.

1.           Parameter

Hydrostatic test pressure           1.2  Mpa

Working pressure                 0.65 Mpa

temperature                     0- 80 C

medium                 water、salt solution、sewage

Max. flow                      5.0  m3/h

Inlet ,Outlet Pipe                 G1’’(1.0  NPT)

Drain Pipe                      G3/4” ( 3/4 NPT)

Tank adapter               72-8 UN-2A (2.5” –8 UN-2A)

Riser Pipe(center tube)            3/4”(27.6mm O.D. *2.5mm Wall)

2.           Installation  (Figure 1 )

Set up the diffuser First ,Then screw tight the valve on the tank . Then you can connect the pipes .

3.  Operation

a.           Filter : When the systerm is in normal operation (filter), The handle is in the position of Filter ,( the arrowhead point to the word of “FILTER” ), In this time ,Original water pass the valve from inlet , into the tank ,then pass through the filer bed and through riser pipe to rise to the valve , Then out off from outlet .(figure 2)

b.          Backwash : When the system need to backwash , Turn the handle to the position of Backwash ,In this time , The water pass the valve into central hole ,through the riser pipe into bottom of tank ,Then pass through the filer bed contrary, up to the valve , out off from drain . (figure 3 )

c.          Rinse : Finish the backwash ,The system need to rinse , Turn the handle to the position of Riser, In this time , The water pass the valve into tank ,pass through the filter bed ,pass the riser pipe ,up to the valve ,then out off from drain. (figure 4 )

d.          Replace : Finish the rinse ,Turn the handle back to the position of Filter ,The systerm will be in normal operation ( filter ) again .

4.  Note:

   When you install and operate the products.Do not overexert or turn the handle opposite, avoid to destroy unusually.