For floor heating systems for piglets' nests that Verba produces, we use reliable quick-release couplings that actually keep the floor heating oxygen-tight / diffusion-proof. If air gets into the water pipe, the underfloor heating will no longer work properly. In a pigsty above the manure pit there is a higher chance of metal corrosion, so we use special, mainly plastic, quick-release couplings for piglet underfloor heating to keep the underfloor heating really oxygen-tight.