Inquiry (采购产品): Vacuum Valve I recently expanded my residential steam heating system to include the upstairs. My system is a vacuum steam system (oil fired) and I would like to keep the vacuum but I need three vacuum valves. The part I used to have was made by Hoffman Specialty Company and was labeled No. 2-A vacuum valve (adjustable part for airventing and steam distribution.) Do you have something similar or know where I could purchase these? Are they still manufacturered? Elaine Burzynski **** Hidden Message ***** Eliane Burzynski NY 11566 USA Company: Residential E-mail: t.burzynski@worldnet.att.net **** Hidden Message ***** t.burzynski@worldnet.att.net
