Pressure relief and sustaining valves protect systems by relieving excess pressure or maintaining minimum upstream pressure during high demand. Pilot-operated diaphragm designs respond quickly to surges while ensuring priority zones retain adequate supply pressure.
Why Choose Us
Australian-owned pipeline valve specialists: engineer-led, responsive, and ready when other suppliers let you down.
Australian owned and operated
Purple Engineering is an Australian company, so your project is managed locally by people who know Australian standards and conditions.
Reliable global brands
As the Australian distributor for trusted global manufacturers, every valve we supply is vetted for quality and consistency.
Engineer-led service
Founded and run by engineers who understand your project, not a phone operator who is just good at taking messages.
Fast when it counts
When everything is going wrong, we move quickly to get the right parts to you and minimise your downtime.