Product Made In Japan
Manufacturer: KONAN ELECTRIC
Model: Silencers

Silencers are designed to attenuate the exhaust noise caused by the control of pneumatic lines. In general, silencers are mounted on the exhaust ports of solenoid valves, directional control valves, and the like, to reduce exhaust noise when the direction is changed. This contributes to overall noise reduction in plants.

Model Code

Standard resin-made type 

Standard metal-made type 

Standard stainless-steel type 

Flat metal-made type 

Flat stainless-steel type 

With throttle valve（resin-made ） 

With throttle valve（metal-made ） 

Specifications

Construction/Operation

Standard metal-made type (ES3-6A 〜 25A)

With throttle valve (EVS4-M5)

Outside Dimensions

Standard resin-made type 

Standard metal-made type 

Standard stainless-steel type 

Flat metal-made type 

Flat stainless-steel type

With throttle valve（resin-made ） 

With throttle valve（metal-made ） 

Operating Instructions

1. Installation 

● Resin-made

For silencers of sizes up to 8A, screw the silencer in lightly as far as it will go by hand. For sizes 10A to 25A, repeat as for size 8A, and then screw in tighter with a hex driver inserted into the hexagonal part of the silencer

● Metal-made

For all sizes, first, screw-in lightly as far as possible by hand, and then tighten with a hex driver inserted in the hexagonal part of the silencer

● With throttle valve

For all sizes, first, screw-in lightly by hand as far as it will go, and tighten with a hex driver which can be inserted in the hexagonal part of the silencer

● Never attempt to apply a pipe wrench, etc., to the cap （body） of the silencer, regardless of the material-resin or metal, of which it is made.

2. Use of the silencer with a throttle valve 

● When adjusting exhaust airflow, rotate the needle clockwise to reduce the flow, and counterclockwise to increase the flow.

● After exhaust airflow adjustment, tighten the lock nut.
● When controlling the cylinder speed, mount a directional control valve onto the exhaust port. Take care not to squeeze the air supply port of the direction control valve, as well as the piping between the air cylinder and the directional control valve.

3. During use 

● If the actuator, air cylinder, etc., becomes extremely sluggish, the silencer may be clogged.  In such case, flush or wash out the exterior of the silencer. If clogging persists, the silencer must be replaced.

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