Omega Products P72F-3AC-PFA User Manual
NorgreN exceloN®
Smooth Start/
exhauSt ValVeS
P72F Series
l In-Line or Modular Installation
l 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
l Blocks Inlet Air and Exhausts
Downstream Air When Pilot
Signal is Removed
l Optional Manual Slide Can be
Padlocked in Closed Position
l Solenoid Pilot Operation
l Designed Primarily for Use
in Start-Up and Shutdown
of Equipment
P74F-4AC-PFA
shown smaller
than actual size.
SPECIFICATIONS
Fluid: Compressed air
Maximum Pressure Solenoid
Operated: Depending on solenoid
rating [must not exceed 17 bar
(250 psig)]
Maximum Pressure Pilot
Operated: 17 bar (250 psig)
Minimum Operating Pressure:
3 bar (44 psig)
Operating Temperature Solenoid
Operated: Dependent on
solenoid rating [must be within
range -20 to 65°C (0 to 150°F)](72)
[must be within range -20 to 80°C
(0 to 175°F)](74)
Operating Temperature Pilot
Operated, 72*: -20 to 65°C
(0 to 150°F)
74: -20 to 80°C (0 to 175°F)
MATERIALS
Body:
72: Zinc alloy
74: Aluminum
Elastomers: Synthetic materials
Filter Discs: Sintered plastic
Internal Components: Brass/steel
*Air supply must be dry enough to avoid ice
formation at temperatures below 2°C (35°F).
1
P74F FLOW CHARACTERISTICS
TYPICAL PERFORMANCE CHARACTERISTICS
psid
PORT SIZE 1⁄2"
bar d
0.8
10
0.6
8
6
0.4
PRESSURE DROP
4
0.2
2
0
0
0 40 80 120 160 200 240 scfm
0 20 40 60 80 100 dm3/s
Solenoid operated plus
manual shut-off with lockout
84 (3.31)
37 (1.46)
1
⁄2 PTF (G1⁄2)
30 (1.18) A/F
96 (3.78) min.
111 (4.37) max.
FLOW CHARACTERISTICS
INLET PRESSURE: bar g (psig)
(44)
3
6.3
4.0
(91)
(58)8(116)
AIR FLOW
Air pilot operated plus manual
shut-off with lockout
37 (1.46)
10
(150)
84 (3.31)
111 (4.37) max.
1
⁄2 PTF (G1⁄2)
30 (1.18) A/F
96 (3.78) min.
PERCENTAGE SNAP POINT
psig
bar g
16
200
12
160
120
8
OUTLET PRESSURE
80
4
40
0
0
0 20 40 60 80 100 120
Solenoid operated
84 (3.31)
37 (1.46)
1
⁄2 PTF (G1⁄2)
30 (1.18) A/F
2 quart (2 liter) downstream volume
SNAP POINT
CHARGE TIME - (S)
Air pilot operated
74 (2.91)
37 (1.46)
84 (3.31)
74 (2.91)
30 (1.18) A/F
212 (8.35)
221 (8.70)
165 (6.50)
1
⁄4 PTF (R
162 (6.38)
107 (4.21)
1
⁄4)
c
156 (6.14)
Dimensions: mm (inch)
To Order Visit omega.com/p72f-2ac-pfa
MODEL NO. PORT SIZE (inch) OPERATION TYPE* WEIGHT kg (lb)
1
P72F-2AC-PFA
P72F-3AC-PFA
P74F-3AC-PFA
P74F-4AC-PFA
⁄
4 Solenoid 0.91 (2.0)
3
⁄
8 Solenoid 0.90 (1.98)
3
⁄
8 Solenoid 1.08 (2.4)
1
⁄
2 Solenoid 1.05 (2.3)
* Solenoid operated models are supplied with 0.87”, 24 Vdc 2 wire coil and connector plug without indicator light plugs.
To select alternative voltages and other applications refer to the options selector. For connector plugs, visit omega.com.
Ordering Example: P72F-2AC-PFA, smooth start/exhaust valve,
1
⁄4" PTF port, 0.87" miniature solenoid, shrouded pushbutton, 24 Vdc coil voltage.
2
144 (5.67)
88 (3.46)
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