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6.3 Modifying the adjustment range by changing the spring kit
Maintenance and assembly instructions:
1- De-pressurise the system and then isolate the device from it (remove from system if necessary),
2- Fully release the spring (150) (turn the adjuster screw (110) anti-clockwise),
3- Remove the valve head fixing screws (270) and then the valve head (20),
4- Remove the spring and washers (150-50),
5- Fit the new spring, with new washers if necessary,
6- Refit in reverse order to removal,
7- Re-fill with water and adjust as per the instructions provided above.
7. Replacement kits
When ordering the kits, quote the information shown on the metal identification plate on the valve housing.
7.1 Seal kits
PN16, PN25 and PN40 seal kits
DN
mm
"
50
2"
65
2 ½''
80
3"
100
4''
125
5''
150
6''
200
8''
DN 50-100 Item N°
DN 125-200 Item N°
Composition
7.2 Spring kits
Spring kits (2 to 8 bar)
DN
mm
"
50
2"
65
2 ½''
80
3"
100
4''
125
5''
150
6''
200
8''
Watts code
166922
202174
162935
167069
166929
162947
166930
140,150,160,170,180,185,190,195
160,170,180,190,200,210,220,260
1 kit with 1 piece of each item
Watts code
166921
166923
162928
162931
202166
0599075
202167
Spring kits (4 to 12 bar)
DN
Watts code
mm
"
50
2"
65
2 ½''
80
3"
100
4''
125
5''
150
6''
200
8''
167028
166924
166926
166927
166928
167092
167103
7
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