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Quick Exhaust Valve and Shuttle Valve Dimensions
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Quick Exhaust Air Valve & Shuttle Air Valve Dimensions
Quick Exhaust Air Valve Operation:
As shown in the pneumatic symbol below, the Quick Exhaust Valve has three
connecting ports: a pressure port (P) & an exhaust port (R) on opposite ends
of the valve, and an outlet port (A) on the top of the valve. When air pressure is
applied to the pressure port (P), an internal check valve piston allows air to move
from the pressure port (P) to the outlet port (A). When the air pressure is removed
from the pressure port (P), the internal check valve piston allows air to exhaust
from the outlet port (A) to the exhaust port (R). The Quick Exhaust Air Valve is
designed to allow air to be quickly exhausted from an air reservoir or an air
cylinder to achieve higher cycle speeds.
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| Part No. | Bore (NPT) |
G (NPT) |
L | W | H | A | B | C | D | Cv |
| QE N1/8 | 1/4″ | 1/8″ | 46 | 20 | 32 | 30 | 4.3 | 27 | 40 | 1 |
| QE N1/4 | 3/8″ | 1/4″ | 62 | 25 | 40 | 39 | 5.6 | 33.5 | 55 | 1.3 |
| QE N3/8 | 3/8″ | 3/8″ | 62 | 25 | 40 | 39 | 5.6 | 33.5 | 55 | 1.4 |
| QE N1/2 | 3/8″ | 1/2″ | 98 | 38 | 64 | 60 | 8.5 | 51 | 90 | 4 |
Shuttle Air Valve Operation:
As shown in the pneumatic symbol below, the Shuttle Air Valve has three connecting
ports: two pressure ports (P1 & P2), one on each end of the valve, and an outlet
port (A) on the top of the valve. An internal check valve piston moves freely between
the two ends of the valve. When air pressure is applied to one of the pressure ports
(e.g., P1), it pushes the piston towards the opposite end of the valve. This prevents
the air from exiting through the opposite pressure port (e.g., P2), but allows air to
flow through the outlet port (A). The Shuttle Air Valve is designed to allow two
different air pressure sources (P1 & P2) to be alternately shuttled to a single
outlet (A), while preventing backflow from one pressure source to the other.
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| Part No. | G (NPT) | A | B | C | D | E | F | Cv |
| ST N1/8 | 1/8 | 40 | 24 | 16 | 4.5 | 25 | 21 | 0.35 |
| ST N1/4 | 1/4 | 50 | 35 | 22 | 5.5 | 35 | 25 | 1 |
| ST N3/8 | 3/8 | 75 | 48 | 30 | 7 | 50 | 42 | 2 |
| ST N1/2 | 1/2 | 75 | 48 | 30 | 7 | 50 | 42 | 3.5 |
| ST N3/4 | 3/4 | 110 | 72 | 40 | 7 | 70 | 58 | 6 |
| ST N1 | 1 | 110 | 72 | 40 | 7 | 70 | 58 | 10 |
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