Process Systems supplies a compact, practical range of air silencers and exhaust speed controllers for pneumatic valves and actuators.
Our range includes brass and 316 stainless steel silencers in button and conical styles, as well as adjustable exhaust regulator/silencer combinations. These fittings are installed in exhaust ports to reduce noise, help keep contaminants out of the valve, and, in adjustable models, control the speed of actuator movement.
With sizes from M5 to 2" BSP across the range, our silencers are available for same-day dispatch Australia-wide. Shop online today!
Air silencers are commonly fitted to the exhaust ports of pneumatic control valves, including 5/2 valves, NAMUR solenoid valves, and manually operated directional valves. They are also used on pneumatic actuators controlled by 3/2 valves, and in other applications where compressed air is exhausted from the system.
Their main job is to disperse exhaust air through a sintered surface, which helps dampen noise at the point of discharge. They also provide a secondary layer of protection by stopping suspended dirt and debris from entering the valve through the exhaust port. In many systems, that simple protection can help reduce contamination-related wear and avoid unnecessary valve replacement.
Where flow control is needed, an exhaust regulator or silencer provides another level of adjustment. These models use a needle valve arrangement to restrict exhaust flow, which helps control the speed of pneumatic actuation. That makes them useful where you need smoother movement, reduced shock, or better cycle control.
Our range includes both brass silencers and 316 stainless steel silencers to suit different operating environments. Brass models are a cost-effective option for general compressed air systems in standard industrial conditions. Stainless steel models are better suited to harsher or more corrosive environments where extra resistance is needed.
At Process Systems, we stock the following types of products:
Thread sizes vary by product, with options available from M5 to 2" BSP. Button silencers offer a compact profile, while conical silencers provide another common form factor for valve exhaust ports. Adjustable exhaust speed controllers are available in both brass and 316 stainless steel for applications that need both silencing and flow control.
Process Systems has more than 30 years of experience supplying valves, fittings, and process control components to the Australian industry. With ISO 9001 certification, tested products, same-day dispatch on stocked items, and free online shipping Australia-wide, our range is made for buyers who need clear specifications and fast delivery.
Browse the full range of silencers below, or contact Process Systems for help selecting the right exhaust silencer or exhaust speed controller for your pneumatic system.
SKU: BES
Brass Exhaust Regulator/SilencerSize 1/8" to 1" BSP
Function Exhaust Speed Controller
Body Brass
SKU: SSL
Stainless Steel SilencerSize M5 to 1" BSP
Function Conical Silencer
Body 316 Stainless Steel
SKU: SSM
Stainless Steel Mini SilencerSize M5 to 1" BSP
Function Button Silencer
Body 316 Stainless Steel
SKU: SES
Stainless Steel Exhuast Regulator/SilencerSize 1/8" to 1" BSP
Function Exhaust Speed Controller
Body 316 Stainless Steel
What is an air silencer?
Air silencers are a broad category of fittings that screw into the exhaust ports of valves. They are designed to reduce the noise of air being expelled from the valve and, in the case of an exhaust regulator, help control speed. They also serve a secondary purpose by keeping suspended solids out of the valve, which helps protect it.
How does an air silencer work?
Air silencers can be made from a range of materials, but our range is primarily available in brass and stainless steel. The outside of the fitting is threaded so it can be installed into the female exhaust port of the valve, while the centre of the fitting contains a sintered surface that disperses the air. Some models also allow flow adjustment by restricting the rate of air passing through the silencer. These are known as exhaust speed controllers. This is achieved using a basic needle valve arrangement that can be wound in or out, allowing the user to control the operating speed of a pneumatic actuator.
How long will my air silencer last?
This depends on the environment in which the air silencer is operating. For corrosive environments, stainless steel is the better choice as it offers greater resistance. The units themselves experience very little mechanical wear, as only air flows through them. The most common issue is blockage from dirt in the surrounding environment. This is part of their function, as they help stop debris from entering the valve. They can often be cleaned, but in some cases, replacement may be required. Replacing a silencer is far more cost-effective than replacing the valve it is protecting.
How do I install an air silencer on valves?
Silencers and exhaust regulators are threaded into the female exhaust ports on your valve or pneumatic actuator. Thread tape or sealant can be used if preferred, but it is generally not required, as air exhausts from this port and a bubble-tight seal is not necessary.
What are typical uses of an air silencer or silencer/regulator combo?
The most common application is on 5/2 valves, such as NAMUR solenoid valves or manually operated 5/2 valves. They are also commonly used on the exhaust ports of actuators controlled by a 3/2 valve. Outside of this, there are many other possible uses, including the exhausts of pressure relief valves. In general, anywhere air is exhausted, there is likely to be a suitable application for an air silencer.
How long will my product take to get to me?
This depends on your location and the freight method selected. If express freight is chosen, delivery is usually next day to metropolitan areas in Australia for orders under 5 kg. If free freight is selected, the order will be sent by road freight, which can take 1-10 days, depending on your location. On average, delivery is around 3 days.
What warranty do I get?
All of our products come standard with a 12-month warranty. We also have strict quality control processes in place, and all valves leave our warehouse tested and inspected, so issues are rare.
