I would like to install a high pressure shower feature (picture attached). I have figured out that I need an extra pump - about 2HP (560 Litres per minute) to get the high pressure I need. So I will be having two pumps in my pool setup - (a) variable speed pump for everyday use - and (b) high pressure pump for shower feature - used rarely. These are my options - and I am unsure which one is best. Keep in mind that suction safety (entrapment) is a key issue I want to address. I want to avoid kids (hair) getting sucked in etc.
1. Put a valve before existing pump - that directs water to new pump (and back when needed). So I can switch between the two pumps. Water flow will be from skimmer only to pump(s). Distance from skimmer to pump is about 15m. I figure the skimmer box will be enough protection from entrapment.
2. Put a valve before the flow inlets that go into the pool - so the inlets can become the suction inlets for the new pump. Distance from from flow inlets to new pump is about 2m. I figure two suction inlets will be safer than one ie pressure is reduced if one is blocked. I will of course need to turn off existing setup when using this setup.
3. Drill a dedicated section inlet for the new pump (I would imagine I need to install some sort of safety device - as there will be a lot of suction coming into 1 port). Any advice on what the cheapest safety feature for this option would be appreciated.
My ideas may be left field - but I am looking for the easiest/safest way to do this.
For me - number 1 option seems easiest - as long as an additional valve doesn't cause too much friction for my variable speed pump.
I would appreciate any assistance and opinions.