Ambient recording. Like coming from the devil's factory. Seat Valve Piston Pump. Close recorded (1m).
Large industrial hydraulic piston pump pumping pasty or highly viscous material with a low content of foreign bodies and small particle sizes (<15 mm). 
The rhythmic noise every 4.3 seconds is from a hydraulic pump that pumps up the fodder in a high silo, so it can be processed and dumped into a truck later. In the distance (right on 70m) the sound of falling metal caused by a scrap processing company.
A weird creepy sound.
Thanks to the operator and manager from Bonda's veevoederbureau b.v. for allowing me to record this audio that close (even I did not call before).
http://www.bonda.nl/en/home.html
Technical data:
output
delivery pressure
up to 250 cu.m/h
up to 150 bar
Location: Ertveldweg,'s-Hertogenbosch (Den Bosch), Netherlands (Holland).
Gear chain: modified Rode NT4 XY and Rode NTG1, in Rode Blimp > Sound Devices 302 >Tascam dr-100 Mk2. Decoded Mid-side to STEREO
Other recordings here (including a loop of this) search: bonda Ertveldweg
RAW 96/24 MID-SIDE-file available on PM request. File-name: 160531_0886 MS.wav
When you use this sound it would be nice if you spent a voluntarily donation to freesound.
YOU ALWAYS HAVE TO CREDIT/ATTRIBUTE me (klankbeeld) and freesound.org in your work if you use this sound.
Please do it like this if possible: http://freesound.org/people/klankbeeld/
Thank you.
This sound may NOT be used in (royalty free) stock material. Don't put my raw sounds/files on youtube or anywhere else. You can use them in creative way as a part of art-form, but not "re-distribute" raw. Thank you.
To hear, you first have to listen
Type
Ogg Vorbis (.ogg)
Duration
9:56.548
File size
37.7 MB
Sample rate
96000.0 Hz
Bitrate
529 kbps
Channels
Stereo
Comments
3 years, 11 months ago
This is a great find. Thank you!
5 years ago
Horrid, but I love it
