One. This technique is a bit much more intricate because it would require someone to bodily enter the water tank in the lid opening/inspection gap inside the roof from the tank. In case the valve is screwed right into a threaded fitting within the tank, then it might be removed https://cesar7bmuc.blogs-service.com/62075274/the-definitive-guide-to-how-to-clean-water-tanks-in-qassim