https://www.septicsolutions.com/septic-parts/aerobic-system-parts/nayadic/49000_38-replacement-diffuser-for-nayadic-systems
Nayadic Replacement Diffuser - 49000 - Free Shipping
49000 - This diffuser works in place of original Nayadic diffusers. Check diaphragm will not blow off because it is molded directly onto the ...
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