ASCO 34600138 | Quick Exhaust Valve | Series 346 | Port Connection G 1/2-inch
The ASCO 34600138 is a genuine quick exhaust valve from ASCO's Series 346 range (G1/2 ports), suited to machines that need faster cylinder cycle times. It is also a practical choice for long hose runs between a control valve and cylinder. Genuine stock at General Tech Services LLC, UAE, with free UAE-wide shipping. Request a quote in under a minute - call +971 6 5436933.
Part Number: 34600138
Contact Number: +971 6 5436933
Product Overview
Larger pneumatic cylinders hold more air, and forcing that exhaust air back through the control valve can slow the return stroke. The ASCO 34600138 is a Series 346 quick exhaust valve with G1/2 ports that vents cylinder air directly to atmosphere near the cylinder.
A quick exhaust valve is installed close to a cylinder port. When the control valve vents the cylinder, the quick exhaust valve allows the stored air to escape directly through its exhaust port rather than travelling back through the hose and control valve. This can significantly improve cylinder return speed and reduce exhaust restrictions.
Pneumatic accessories are easy to overlook, but they have a direct effect on the efficiency and reliability of a compressed-air system. The wrong fitting or substitute component can leak, restrict airflow or fail under vibration, while continuous air loss increases compressor running costs. A genuine ASCO accessory matched to the installation helps keep the circuit reliable, leak-tight and easy to service.
The ASCO 34600138 is part of ASCO's Series 346 range of pneumatic line accessories. Its passive operation requires no electrical connection, making it straightforward to install close to pneumatic actuators.
Looking for a related part? See the ASCO 34600137 (G3/8 ports) or the ASCO 34602126 non-return valve (G1/2 ports), and keep the same installation approach.
Key Benefits
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Faster cylinder return by venting air directly at the cylinder
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Helps reduce exhaust restrictions on pneumatic circuits
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G1/2 connections suited to compatible cylinder ports
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Simple passive device with no electrical connection
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Particularly useful on long hose runs between valve and cylinder
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Genuine ASCO stock with free UAE-wide shipping
Contact +971 6 5436933 for pricing and stock availability
Features & Specifications
| Specification | Details |
|---|---|
| Brand | ASCO (Emerson) |
| Part Number | 34600138 |
| Product Type | Quick Exhaust Valve |
| Series | 346 |
| Port / Size | G1/2 |
Who This Product Is Best For
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Machines that need faster cylinder cycle times
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Pneumatic systems with long hose runs between valve and cylinder
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Applications where cylinder exhaust flow is restricted
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Maintenance teams replacing existing Series 346 components
How to Specify & Install It
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Fit the ASCO 34600138 as close as possible to the cylinder port for maximum exhaust-flow benefit.
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Connect the control-valve line and cylinder ports according to the valve's marked flow paths.
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Keep the exhaust port clear or install a suitable pneumatic silencer where required.
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Cycle the cylinder and confirm the desired return speed while checking all connections for leaks.
Frequently Asked Questions
What does a quick exhaust valve do?
It vents cylinder air directly to atmosphere near the cylinder. This reduces the distance exhaust air must travel and can speed up the cylinder's return stroke.
Where should the 34600138 be installed?
Install it as close to the cylinder port as practical. This minimises the exhaust path and provides the greatest potential improvement in cylinder response and return speed.
What port size is the 34600138?
The ASCO 34600138 has G1/2 connections. Check that your fittings and pneumatic tubing are compatible before installation.
Should I choose the 34600138 or another ASCO model?
Start with the required port size and pneumatic function. The 34600138 offers G1/2 ports and quick exhaust operation. If you need G3/8 ports, the ASCO 34600137 may suit better. If you need a non-return valve instead, the ASCO 34602126 may be more suitable. Contact our team to confirm.
How should I maintain the 34600138?
Use clean, dry, filtered air where applicable, inspect connections for leaks during routine maintenance and replace the valve if it shows damage, excessive wear or unreliable operation.
What is the most common mistake with pneumatic accessories?
Mismatching thread or tube sizes is a common installation problem. Confirm the connection size, airflow path and compatible valve series before ordering.
Is genuine ASCO stock available with UAE shipping?
Yes. Genuine ASCO stock ships free across the UAE. Call +971 6 5436933 for current pricing and lead time.
+971 6 5436933
