Hey everyone i have a Hayward Cartridge Filter. Ther Serial Number is 11760. What im having a problem with is getting the model number. I broke the auto relief valve. I need to get a new one but need to know the model number. Can anyone lend a help. Oh by the way my pool looks like a swamp. And were starting to attract mosquitoes. Is it safe to run the pump and clean the pool whith that relief valve broken? Im totally New to pools.