Pneumatic non-return valve
Pneumatic non-return valves[1][2] are used where a normal non-return valve would be ineffective. This is for example where there is a risk of flood water entering a site but an equal risk of pollution or a chemical spills leaving a site and polluting the environment.
Pneumatic non-return valves are installed below ground and can be used to pneumatically lock the non-return valve closed thus containing a site in the event of a spill.
It is common practice to lock sites using pneumatic non-return valves during the loading or transferring of chemicals or hazardous waste. Pneumatic non-return valves have a longer service life when compared to pneumatic bladder systems.
References
[edit]- ^ "Check Valve Types". jmiltd.com. Retrieved 16 April 2025.
- ^ "Pneumatic Valves: How Do They Work?". mrosupply.com. Retrieved 16 April 2025.
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