Polylok's Orifice Diffuser ensures even distribution on lateral piping from all orifices in any system by separating the discharge orifice from the drain media; which effectively protects the system. Because of low pressure in most wastewater systems, typically 1-3 psi, it is extremely important to assure drainage media does not interfere with the discharge orifices. Systems should be designed with the use of an orifice diffuser on all discharge holes to assure even distribution and even system pressure after back-filling.