Hayward de model sp71xr50

[vinper]

While cleaning I snapped the air bleed valve off , turns out it has a unique thread more coarse than pipe threads . Not only can I not find this part . I cannot find this model # listed anywhere ?

[vinper]

I found the stupid part thttp://www.amazon.com/Hayward-DEX2400S-Filter-Adapter-Assembly/dp/B0032UXRJG/ref=sr_1_1?ie=UTF8&qid=1361818910&sr=8-1&keywords=hayward+dex2400 . the model # I had was for the multi valve unit