On 5 Oct, 16:07, (A.Lee) wrote:
I think it means without valves. I havent heard the term before, but a
google does show it.

Possible yes, but then I haven't seen any pumps being sold with valves
because you may need 22mm or 28mm or... pause Quick google /pause,
nope can't see any with valves.

What pump do you need? I've got a 'new' old pump sat in my shed for a
gravity fed coal fired system, free to anyone who wants to collect from
just South of Leicester.Looks a pretty std. gravity feed header style
central heating system pump.

Thanks for the offer, but I have ordered a new Gundfos unit. I am not
trying to replace like for like and will have to add some copper
because new pumps are considerable shorter than the old one.

BraileTrail