Rad Removal

Hi Have removed an old rad in one of my rooms, so now have two pipes side by side coming out of the floor. What do I need to close these off, as although I don't need the heating - can't repressurise it anyway, I still need the hot water from the combi boiler. If I turn on a tap, the water runs hot, but as soon as I turn it off, water comes out of the top of these pipes. Surely I can close these off until I'm ready to install the new rad, I'm just not sure what I need to purchase.
Thanks Bob
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.