M
Mike Jackson
Instead of paying out for expensive aerosol chemicals for central heating systems why not use a pump to inject the cheaper standard chemicals?
There's no need to pay out a fortune to buy one. A cheap garden sprayer and a couple of fittings will do the trick.
Take one garden sprayer, one 10x15 compression coupling and an old filling loop. Ensure that the hose from the sprayer looks to be about 10mm ID. Cut off the spray attachment, fit the nut and olive from the 10mm end of the coupling over the hose, you may need to warm it slightly to get them to fit. Insert into the fitting and tighten. Remove and discard the nut from the other end and attach the filling loop. You now have a pressure pump for injecting chemicals into sealed heating systems.
With a bit of ingenuity you can make up various adaptors. A straight compression coupling screwed into the top of a radiator allows you to inject straight into a radiator.
A sort section of hose connected to a fulham nozzle with a 1/2" MI thread enables you to inject in all sorts of different places, it's easy to make up an adaptor to 22mm copper that will enable you to inject chemicals into the open vent of a system, saves having to partially drain the system, just turn off the water. Bale some out and mix with the chemical, stick it in the pump and pump it down the open vent, system water will be forced back up the cold feed and the chemical is straight into the heart of the system.
How about a sealed system where the mains pressure is really low, increase the pressure using the pump to push more water into the system.
CQ9R2226 by Mike Jackson1, on Flickr
CQ9R2227 by Mike Jackson1, on Flickr
There's no need to pay out a fortune to buy one. A cheap garden sprayer and a couple of fittings will do the trick.
Take one garden sprayer, one 10x15 compression coupling and an old filling loop. Ensure that the hose from the sprayer looks to be about 10mm ID. Cut off the spray attachment, fit the nut and olive from the 10mm end of the coupling over the hose, you may need to warm it slightly to get them to fit. Insert into the fitting and tighten. Remove and discard the nut from the other end and attach the filling loop. You now have a pressure pump for injecting chemicals into sealed heating systems.
With a bit of ingenuity you can make up various adaptors. A straight compression coupling screwed into the top of a radiator allows you to inject straight into a radiator.
A sort section of hose connected to a fulham nozzle with a 1/2" MI thread enables you to inject in all sorts of different places, it's easy to make up an adaptor to 22mm copper that will enable you to inject chemicals into the open vent of a system, saves having to partially drain the system, just turn off the water. Bale some out and mix with the chemical, stick it in the pump and pump it down the open vent, system water will be forced back up the cold feed and the chemical is straight into the heart of the system.
How about a sealed system where the mains pressure is really low, increase the pressure using the pump to push more water into the system.
CQ9R2226 by Mike Jackson1, on Flickr
CQ9R2227 by Mike Jackson1, on Flickr
