DN15 to DN50

1

2

3

4

5

6

12

7

19

15

14

For DN15 to DN50, parts 22 to 30, see page 4

For DN80 parts, see page 4

8

9

10

11

21

13

16

17

18

20

Materials

No. Part

1 Adjustment screw

2 Adjustment lock-nut

3 Washer

4 Spring housing

5 Top spring plate

Pressure adjustment

6

spring

7 Bottom spring plate

Securing

8

Spring

nuts

housing Securing

studs

9 Pilot diaphragm

10 Pilot valve housing

11 Pilot valve plunger

12 Spring housing cover

Material

Steel

Steel

Stainless steel

Cast steel

Stainless steel

Stainless steel

Steel

Steel

Steel

DN15 to DN80

Stainless steel

Steel

DN15 to DN50

DN80

Stainless steel

Stainless steel

BS 3692 Gr. 8.8

BS 3692 Gr. 8

BS 1449 304 S16

DIN 17245 GS C25

BS 970 220 Mo7

BS 2056 302 S25

BS 970 220 Mo7

BS 3692 Gr. 8

BS 4439 Gr. 8.8

M10x30mm

BS 1449 316 S31

DIN 17245 GS C25

GP 240 GH+N

BS 970 431 S29

BS 1449 304 S12

No. Part

13

Pilot valve and seat

unit

14 Internal strainer

15 Body gasket

16

Main valve return

spring

17 Main valve

18 Main valve seat

19

Balance pipe

assembly

20 Main valve body

Securing

nuts

Pilot valve

21

housing Securing

studs

Material

Stainless steel

BS 970 431 S29

Control valves

Pressure reducing/surplussing valves

TI-P006-01 CH Issue 13

DP143, DP143G, DP143H and DP143Y Pilot Operated Pressure Reducing Valves with Cast Steel Bodies

DP143G is stainless steel/nitrile

Stainless steel

BS 1449 304 S16

Stainless steel reinforced exfoliated

graphite

Stainless steel

BS 2056 302 S16

Stainless steel

BS 970 431 S29

DP143G is stainless steel/nitrile

Stainless steel

BS 970 431 S29

DP143G is stainless steel/nitrile

Stainless steel

Cast steel

Steel

Steel

DN15 and DN20

DN25 to DN50

DN80

BS 3605 304 S14

DIN 172 45 GS C25

BS 3692 Gr. 8

BS 4439 Gr. 8.8

M10 x 25 mm

M12 x 30 mm

M12 x 40 mm

Page 3 of 9

4.6.66