Diesel Engine Silencer

Name: Diesel Engine Silencer
Brand: Ayso Fire Protection

A diesel engine silencer is installed in the exhaust line of a diesel engine fire pump to reduce exhaust noise. The silencer is selected according to the location of the pump room, the noise sensitivity of the surroundings and the exhaust connection size. Noise grade, material and exhaust connection size are evaluated together when selecting a fire pump exhaust silencer.

Clarke Fire Pump Exhaust Silencers

Clarke offers exhaust silencers for diesel fire pump engines in four noise grades: Industrial, Residential, Critical and Hospital. Silencers can be selected in carbon steel or 316 stainless steel, with or without a spark arrestor. According to Clarke, Critical Grade 316SS silencers provide noise reduction beyond the residential grade and are suitable for environments with strict sound limits.

Clarke carbon steel silencers have a double-wall, fully welded construction that prevents noise radiating from the shell and increases durability. The shell is finished in satin black paint rated to 1200 °F and includes a plugged drain port. A 316 stainless steel flexible exhaust connection is also offered for connection to the engine.

Diesel engine silencers can also be supplied under the Kirloskar brand; on Kirloskar KFP series engines the silencer is supplied loose as part of the standard scope.

Diesel Engine Silencer Technical Specifications

Specification	Value
Noise Grades	Industrial, Residential, Critical, Hospital
Material	Carbon steel or 316 stainless steel
Options	With or without spark arrestor; 316 SS flexible exhaust connection
Connection Sizes	3″ – 10″ (3″ Industrial grade only)
Connection Type	3″: male NPT; 4″ – 10″: 125/150# ANSI flange
Construction (carbon steel)	Double wall, fully welded, plugged drain port
Coating	Satin black paint rated to 1200 °F

Technical values are based on manufacturer documents; confirm against the current data sheet before ordering.

Diesel Engine Silencer Applications

Exhaust lines of diesel engine fire pumps

Pump rooms close to noise-sensitive areas such as housing and hospitals

Coastal and humid environments (with the 316 stainless option)

Container and enclosed pump stations

Related Fire Pump Accessories

Other equipment considered together with the Diesel Engine Silencer in the fire pump room:

Frequently Asked Questions

Which silencer grade should be selected?

Selection depends on the noise sensitivity of the surroundings. The manufacturer offers Industrial, Residential, Critical and Hospital grades; the Critical grade is recommended for environments with strict sound limits.

Which connection types are available?

The 3″ size has a male NPT connection; 4″ – 10″ sizes have 125/150# ANSI flange connections.

When is a stainless steel silencer preferred?

The manufacturer offers 316 stainless steel silencers and flexible exhaust options for harsh conditions such as coastal and humid environments.

Is a spark arrestor option available?

Yes. Silencers can be selected with or without a spark arrestor.

Can the exhaust piping load the engine?

No. According to the manufacturer's installation instructions, exhaust piping must be supported by the building structure; the flexible connection on the engine is for thermal expansion only.

Is a silencer supplied with KFP engines?

Yes. On KFP series engines the silencer is supplied loose as part of the standard scope.