CH Pump - What stays with the pump and what comes off?

[anta]

Hi guys,
I want to relocate this pump (into a Y-plan setup). At what point does the pump come undone as a standalone unit? Photo below. There seems to be several sizes of fittings all chained together with a pair of gate valves.

View media item 17545
When re-fitted I want to use two of item 19987 (22mm. Durable valves to control water flow. ) from Screwfix. Is this ok?

Ant

 

[dextrous]

Since you're likely to be draining the system anyway, cut the pipes beyond the gate valves and then start unscrewing whatever will unscrew. You'll get there in the end

Screwfix parts will probably be ok and, as you are well aware, will replace the gate valves anyway.