No. Part
1
Adjustment screw
2
Adjustment lock-nut
3
Washer
4
Spring housing
5
Top spring plate
6
Pressure adjustment
spring
7
Bottom spring plate
1
2
3
4
5
6
12
Spring
Securing nuts
housing Securing studs
steel
steel
steel
8
8
9
Pilot diaphragm
Stainless
DN15 to DN50
7
29
10
10 Pilot valve housing
11 Pilot valve plunger
12 Spring housing cover
13 Pilot valve and seat unit
14 Internal strainer
15 Body gasket
16 Main valve return spring
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
M10
BS 1449
BS 3100
BS 970
BS 1449
BS 970
BS 1449
reinforced
x 30 mm
316 S31
316 C12
431 S29
304 S12
431 S29
304 S16
302 S25
431 S29
431 S29
304 S14
316 C12
9
External
11
downstream
21
pressure sensing
pipe union
13
14
15
19
16
Internal
17
balance
18
pipe
20
17
19 Balance pipe assembly
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
DN15 and DN20
DN25 to DN50
DN80
Cast
Stainless steel
Stainless steel
Stainless steel
DN15 and DN20
DN25 and DN32
DN40 and DN50
DN80
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
DN80 only
Stainless steel
BS 2056
BS 970
BS 970
BS 3605
BS 3100
Main valve
18 Main valve seat
20 Main valve body
21 Pilot valve
Securing nuts
housing
Securing studs
22
Main diaphragm
chamber
23 Main
Securing nuts
diaphragm Securing bolts
24 Main diaphragms
25 Main diaphragm plate
26 Pushrod
27 Control pipe assembly
28 Plug " BSP
29 Pressure pipe union
30 Lock-nut
45
Body nuts
Body studs
46
Upper main
diaphragm chamber
BS 6105 A4/80
BS 6105 A4/80
M10 x 25 mm
M12 x 30 mm
M12 x 40 mm
BS 3100 316 C12
BS 3692 Gr. 8
BS 6105 A4/80
M12 x 50 mm
M12 x 60 mm
M12 x 65 mm
M12 x 80 mm
BS 1449 316 S31
BS 970 431 S29
BS 970 431 S29
BS 3605 304 S14
BS 970 431 S29
BS 970 316 S31
BS 6105 A4/80
BS 3692 Gr. 8
BS 6105 A4/80
M12 x 40 mm
BS 3100 316 C12
25
24
26
27
30
23
22
28
Material
Stainless
Stainless
Stainless
Stainless
Stainless
Stainless
Stainless
Stainless
steel
steel
steel
steel
steel
steel
BS 6105 A4/80
BS 6105 A4/80
BS 1449 304 S16
DIN 3100 316 C12
BS 970 431 S29
BS 2056 302 S25
BS 970 431 S29
BS 6105 A4/80
BS 6105 A4/80
Stainless steel
exfoliated graphite
Page 2 of 7
DP163, DP163G and DP163Y
Pilot Operated Pressure Reducing Valve with Stainless Steel Bodies
TI-P107-01 CH Issue 10
Page 2 of 7
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