Hey everyone, I bought my house back in 2021 and just realized the previous owners installed the sediment filter on backwards. I also have a leaking gate valve. I’m pretty tight on funds so I’m looking for fixes without soldering or cutting pipes if possible.

**Issue 1: Reversed Whole-House Sediment Filter**

I verified 100% that the filter housing is installed backward (the 'In' and 'Out' ports are reversed relative to the water flow direction).

Once I shut off the water and drain the line, is correcting this as simple as unscrewing the nuts, spinning the entire housing 180 degrees, and tightening them back down? There’s a lot of corrosion and I’m worried that I won’t be able to remove it without damaging the filter housing, or being unable to screw it back on. I was also going to buy a new filter system since being installed backwards I’m thinking there was damage since the valve was being run backwards, and they are pretty cheap 45-50 bucks.

**Issue 2: Leaking/Failing Main Gate Valve** 

My outdoor main shutoff gate valve is dripping from the packing nut area. The nut itself is cracked and even when I turn the handle completely closed, water still trickles through into the house. It looks threaded on but unsure if I would be able to simply unscrew it since it looks threaded on both ends. Would I be able to swap the internals while leaving the line undisturbed? 

I do know where the street meter is so I can shut off from there before starting. 

Any tips, or reality checks before I shut down the main would be hugely appreciated!

Thank you!

Need advice: Fixing a reversed sediment filter + leaking/failing main gate valve