Page 176 - Bürkert

Pilot pressure diagram for normally open and flow direction below seat

Diagram 1 Diagram 2

Actuator size DN25/ Ø63 Actuator size DN15/ Ø80
Orifice DN15/ Ø40 DN32/ Ø63 DN20/ Ø40 DN40/ Ø63 DN50/ Ø63 Orifice DN32/ Ø50 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 Item no. Gunmetal body Item no. Cast st. st. body
connection Orifice Actuator size Kv value Pressure
3
[inch] [mm] Ø [mm] [m /h] range [bar] PA actuator PPS actuator PA actuator PPS actuator
Normally closed
G 1/2 13 40 3.7 0 - 15 178 608 178 607 178 606 178 605

50 4.2 0 - 16 178 684 178 683 178 682 178 681

G 3/4 20 50 8.5 0 - 11 178 680 178 679 178 678 178 677
63 9 0 - 16 178 666 178 665 178 664 178 663

G 1 25 63 18 0 - 11 178 676 178 675 178 674 178 667
80 18 0 - 16 186 489 187 565 186 488 187 844

G 1 1/4 32 80 27 0 - 14 178 699 178 698 178 697 178 696

G 1 1/2 40 100 42 0 - 12.5 185 072 187 829 185 073 235 380
125 42 0 - 16 186 487 – 187 840 –

G 2 50 100 55 0 - 7.2 001 134 002 170 001 140 001 239

125 55 0 - 10 001 593 002 171 001 601 002 162
G 2 1/2 65 125 90 0 - 5.2 001 368 002 172 001 373 001 703

Normally open
G 1/2 13 40 3.8 0 - 16 178 601 178 602 178 603 178 604

50 4.2 0 - 16 178 691 178 690 178 689 178 688

G 3/4 20 50 8.5 0 - 16 178 687 179 020 178 686 178 685
G 1 25 50 10 0 - 16 178 850 178 849 178 848 178 847

G 1 1/4 32 63 25 0 - 16 178 845 178 853 178 852 178 851
G 1 1/2 40 63 35 0 - 16 178 864 178 863 178 862 178 861

G 2 50 80 49 0 - 16 001 595 002 180 001 603 002 164

G 2 1/2 65 80 77 0 - 16 001 372 002 181 001 377 001 710

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