Page 178 - Bürkert

Pilot pressure diagram for normally closed and flow direction below seat

Diagram 1 Diagram 2

Actuator size DN25/ Ø63 Actuator size DN15/ Ø50
Orifice DN15/ Ø40 DN32/ Ø63 DN40/ Ø63 DN20/ Ø40 DN65/ Ø100 DN50/ Ø63 Orifice DN20/ Ø50 DN40/ Ø80 DN25/ Ø50 DN50/ Ø80 DN65/ Ø80
16 16 2000
Operating pressure [bar] 12 8 6 Operating pressure [bar] 12 8 6
14
14
10
10

2 4 4 2
0 0
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Pilot pressure [bar] Pilot pressure [bar]

Ordering Chart
Port connection Orifice Actuator Kv Value Pressure range
[inch] [mm] [mm] [m /h] [bar] Item no. PA Item no. PPS
3
Gunmetal body
G 1/2 13 50 4.2 0 - 16 183 939 186 106

G 3/4 20 40 7.9 0 - 16 186 822 –

50 8 0 - 16 185 356 180 374
G 1 25 50 14.5 0 - 16 186 380 187 556

63 18 0 - 16 178 860 178 859
G 1 1/4 32 63 25 0 - 16 178 855 178 854

G 1 1/2 40 63 35 0 - 16 178 896 178 897

G 2 50 63 49 0 - 16 001 251 002 149
G 2 1/2 65 80 77 0 - 14 001 398 002 151

100 90 0 - 15 130 332 186 344
Stainless steel body
G 1/2 13 50 4.2 0 - 16 186 376 186 467
G 3/4 20 40 7.9 0 - 16 187 672 –

50 8 0 - 16 185 304 180 375

G 1 25 50 14.5 0 - 16 186 729 187 872
63 18 0 - 16 178 857 178 856

G 1 1/4 32 63 25 0 - 16 178 893 178 892

G 1 1/2 40 63 35 0 - 16 178 895 178 894
G 2 50 63 49 0 - 16 001 401 002 158

G 2 1/2 65 80 77 0 - 14 001 402 002 160

100 90 0 - 15 130 333 –

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