Norgren P72F Datasheet
See Section ALE-24 for Accessories
Littleton, CO USA Phone 303-794-2611 www.norgren.com
P72F
● Excelon design allows in-line or modular installation
● Controls increase of downstream pressure on
start up. Cylinders and other air operated devices are
eased into normal operating positions, reducing the
possibility of equipment damage and hazards to the
user.
● 3 port/2 position, normally closed, soft start valve
● Blocks inlet air and exhausts downstream air when
pilot signal is removed
● Solenoid pilot or air pilot operation
● Designed primarily for use in start-up and shutdown
of equipment, not as a frequently cycling directional
control valve. Norgren offers a wide variety of valves
designed for frequent cycling and other applications.
Please refer to the P72C and P74C valves, and to
other Norgren valve catalogs.
Excelon 72 Smooth Start/Exhaust Valve
1/4", 3/8" Port Sizes
ALE-17-6
ISO Symbols
Solenoid operated Air pilot
Ordering Information. Models listed are with PTF threads.Solenoid operated models include 24 VDC coil and plug without indicator .
* To select other solenoid type and coil voltage refer to alternative models table below.
Port Size Solenoid Operated* Weight Air Pilot Operated Weight
Model lb (kg) Model lb (kg)
1/4" P72F-2AC-PFA 2.00 (0.91) P72F-2AA-NNN 1.93 (0.88)
3/8" P72F-3AC-PFA 1.98 (0.90) P72F-3AA-NNN 1.91 (0.87)
P 7 2-F
★ ★
-
★★ ★ ★
Solenoid Manual Operator Substitute
Shrouded push button P
None N
Connectors Substitute
3 pin plug with cable gland, A
no indicator
Without N
** to order air pilot models also substitute ‘NNN’at
digits 8, 9 and 10 e.g.P72F-2GA-NNN.
Alternative Models
Coil Voltage Nominal Substitute
Power Rating
24 V d.c. 2 W F
12 V d.c. 2 W E
6 V d.c. 2 W D
220/240 V 4/2.5 VA B
50/60 Hz
110/120 V 4/2.5 VA A
50/60 Hz
No coil 2 W Z
No solenoid N
Operator Substitute
Air pilot** A
22 mm miniature solenoid C
CNOMO L
Threads Substitute
PTF A
ISO Rc taper B
ISO G parallel G
Port Size Substitute
1/4" 2
3/8" 3
P72F Smooth Start/Exhaust Valve
Littleton, CO USA Phone 303-794-2611 www.norgren.com
ALE-17-7
All Dimensions in Inches (mm)
Technical Data
System air supply:Turn on system air supply prior to applying pilot signal to operator.
Failure to do so may cause valve to continuously exhaust.
Fluid: Compressed air
Maximum pressure solenoid operated:
Dependant on solenoid rating
[must not exceed 250 psig (17 bar)]
Maximum pressure pilot operated: 250 psig (17 bar) max.
Minimum operating pressure: 44 psig (3 bar)
Operating temperature solenoid operated:
Dependant on solenoid rating
[must be within range 0°* to 150°F (-20°* to 65°C)]
Operating temperature pilot operated:
0°* to 150°F (-20°* to 65°C)
* Air supply must be dry enough to avoid ice formation at temperatures below 35°F (2°C).
Air Pilot Port:
10-32 UNF with PTF main ports
M5 with ISO main ports
Exhaust Port:
1/4" PTF with PTF main ports
1/4" ISO Rc with ISO Rc main ports
1/4" ISO Rc with ISO G main ports
Maximum flow with 90 psig (6.3 bar) inlet pressure and pressure drop of 7 psig
(0.5 bar): 45 scfm (21 dm
3
/s) [P1to P2= Cv 1.59] [P2to P3= Cv 1.72]
Snap pressure:
Full flow when downstream pressure reaches 50 – 80% of inlet pressure
Charge time:
For 0.53 gallon US (2 liter) downstream volume and 90 psig (6.3 bar) inlet
pressure
Minimum 0.8 sec.
Typical maximum 99 sec.
Materials
Body: Zinc alloy
Elastomers: Synthetic materials
Filter discs: Sintered plastic
Internal components: Brass/steel
Typical Performance Characteristics
Solenoid operated
Air pilot operated
PORT SIZE: 1/4
psid
bar d
0.8
10
0.6
8
6
0.4
PRESSURE DROP
4
0.2
2
0
0
0 10 20 30 40 50 60 scfm
0 5 10 15 20 25 dm3/s
psig
bar g
16
200
12
160
120
8
OUTLET PRESSURE
80
4
40
0
0
0 20 40 60 80 100 120
FLOW CHARACTERISTICS
"
PERCENTAGE SNAP POINT
0.53 gal (2 liter) downstream volume
SNAP POINT
CHARGE TIME - (S)
INLET PRESSURE: psig (bar g)
44
(3)
58
(4.0)
91
(6.3)
116
150
(10)
(8)
2.60 (66)
0.95 (24)
4.57 (116)
1/4" exhaust port
1.89 (48)
6.38 (162)
2.60 (66)
0.95 (24)
1.89 (48)
Pilot port
1.77 (45)
3.58 (91)
1/4" exhaust port
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