A float valve controls the mouth of the hot air pipe, which is designed for adjustable dispersion of the airstream from the pipe mouth below the grate.OSTEVIK PETTER PEDERSEN
A device Foer BILDANDE AV VATTENLAOS I SKYDDSROER TILL SAENKPUMP I GASBEHAOLLARE. PCT No. PCT/FI89/00207 Sec. 371 Date Jun. 25, 1990 Sec. 102(e) Date Jun. 25, 1990 PCT Filed Nov. 15, 1989 PCT Pub. No. WO90/05687 PCT Pub. Date May 31, 199......
A float valve controls the mouth of the hot air pipe, which is designed for adjustable dispersion of the airstream from the pipe mouth below the grate.OSTEVIK PETTER PEDERSEN