This is a brand new Ansul Discharge Pressure Pneumatic Switch 437900. Brand new in an opened box. Never been used.
More information and install instructions here: http://firesystemsproducts.com.au/media/specs/437900%20Pneumatic%20Switch%20Datapage.pdf
Please refer to the provided pictures for more information and don't forget to check out our other items! Feel free to ask any questions prior to placing your bid.