Page 69 - Parker- Parker global air preparation system

Catalog 0750-3 US P31S / P32S Series
Global Air Preparation System Soft Start Valves

Technical Information Flow Charts

Fluid: Compressed air P31SA 1/4" Soft Start Valve
Max. pressure solenoid operated: 10 bar (150 psig) Inlet Pressure - 6.3 bar (91.3 psig)
8
Max. pressure air pilot operated: 17 bar (250 psig) 100 10 bar
9.0 bar
Min. operating pressure: 3 bar (44 psig) 6 6.3 bar 8.0 bar 130.5 psig 145 psig
7 bar
Temperature Max.* solenoid operated: -10°C to 50°C 80 5 6.0 bar 91.4 psig 101.5 psig 116 psig
87 psig
(14°F to 122°F) Secondary Pressure - (psig) 60 Secondary Pressure - bar 7 4 72.5 psig
5.0 bar
4.0 bar
Temperature Max.* air pilot operated: -20°C to 80°C 40 3 3.0 bar 58 psig
(-4°F to 176°F) 2 43.5 psig
Air pilot port: 1/8" 20 1
Gauge port: P31S - 1/8" / P32S - 1/4" 0
35
30
Typical flow with 6.3 bar 0 5 10 15 20 25 Flow - dm /s 40 45 50 55 60 65
3
3
inlet pressure and 1 bar P31S 17 dm /s (36 scfm) 0 20 40 60 80 100 120
3
pressure drop: P32S 48 dm /s (101 scfm) Flow - (scfm)
* Air supply must be dry enough to avoid ice formation at temperatures below +2 C P32SA 1/2" Soft Start Valve
°
Snap pressure: Full flow when downstream pressure reaches 50% of the inlet pressure
10 bar
Inlet Pressure - 6.3 bar (91.3 psig) 145 psig
8 9.0 bar
Material Specifications 100 91.4 psig 116 psig 130.5 psig
6.3 bar
8.0 bar
7 bar
Body: Aluminum 80 6 6.0 bar 101.5 psig
87 psig
Body cover: Polyester 5 72.5 psig
5.0 bar
Seals: Nitrile NBR Secondary Pressure - (psig) 60 Secondary Pressure - bar 7 4 3 3.0 bar 4.0 bar
58 psig
40
Mounting Brackets 20 2 1 43.5 psig
Description Part number 0 0
P31S 0 20 40 60 3 80 100 120 140
L-bracket mounting kit P3HKA00ML Flow - dm /s
0 40 80 120 160 200 240 280
Foot bracket mounting kit P3HKA00MC Flow - (scfm)
Note:
For solenoid operators and cable plugs (connectors) see pages 76 to 77.
Dimensions mm (inches)
P31S P32S
- + - + 88
5
5
(3.46)

166
(6.53) 1/8"
Gauge 1/4"
136 Port 174.5 Gauge
(5.35) (6.87) Port
37 109.5
(1.45)
(4.31)
64.5
(2.53)
Soft Start Function:
40
(1.57)

57 57.2
(2.25)
50% (2.24)
1 Start signal
2 Switching time delay 75
3 Gradual pressure build up (2.95)
4 Operating pressure p 2 (=p 1 ) For mounting brackets see page 56.
69 Parker Hannifin Corporation
Pneumatic Division
Richland, Michigan
www.parker.com/globalfrl