Inquiry (采购产品): TO: Kenny Janacek I'm looking for info on Spring Loaded Check Valves, or Adjustable Pressure Check Valves. These check valves will be mostly large sizes, i.e., 4'' and 3''........... **** Hidden Message ***** Spencer Lofland 902 College Ave. Brenham, TX 77833 USA Company: Blinn College Title: HVAC Supervisor Phone: 979-830-4199 Fax: 979-830-4029 E-mail: slofland@blinn.edu **** Hidden Message ***** slofland@blinn.edu