Parker Hannifin Corporation
Pneumatic Division Europe
www.parker.com/pde
5
Integration Guide
P33 Safety Exhaust Valve
FRL-SIF-120
_EU
Parker Pneumatic
General Operation Guide (Schematics)
The Parker P33 schematic shows patented cross flow technology. Solid state pressure sensors are used in this
design (in place of mechanical switches). The red box highlights the optional soft start in the unit.
General Operation Guide (Dimensions)
*
Standard nominal flow rate is based on 6 bar input pressure with ∆P = 1 bar
Externally Monitored (with Soft Start)
Externally Monitored (No Soft Start)
Dimensions
Ports
Standard nominal flow rate
A
B
C
D
E
F
1
→
2
L/min (SCFM)*
2
→
3
L/min (SCFM)*
inches (mm)
Externally Monitored
3/4"
4,100 (145)
7,500 (265)
10.31
3.15
4.30
1.44
6.39
0.64
with soft start
(261.9)
(80)
(109.3)
(36.5)
(162.3)
(16.3)
Externally Monitored
3/4"
4,300 (152)
7,500 (265)
7.03
3.15
4.30
1.44
3.11
0.64
no soft start
(178.7)
(80)
(109.3)
(36.5)
(79.0)
(16.3)
2
1
3
2
1
3
D
E
F
A
B
C
D
E
F
A
B
C
2
3
1
Pressure
Sensors
Solenoid
B
Solenoid
A
-
+
-
+
Sensor A
Sensor B
