John Wood® JNER-14-080 ERP_001495

John Wood® Expansion Tank, 21 gal Capacity, 1 in Connection, MNPT Connection, 15 A Fuse, Carbon Steel Shell, Exterior Epoxy Paint, 90 lbf/sq-in, 12 lbf/sq-in Air Pre-Charge Pressure, 210 deg F, 32 in H x 15-3/4 in Dia

• Food quality heavy-duty SBR compound diaphragm
• 14 gal tank acceptance and non code diaphragm
• Style tank is divided in half by a butyl rubber diaphragm, one side being the water side and the other being the air side
• Water side is connected to the pipe work in the system and the air side is maintained using a simple car-tire type valve, also known as a schrader valve
• As pressure decreases in the system, the diaphragm is pushed against the inlet and as the water pressure increases, the diaphragm moves away from the inlet and compresses the air on the other side
• Advantage of this style tank is the low initial cost - for ease of replacement, many people find themselves resorting to bladder type expansion tanks, which also helps keep replacement costs lower

• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/John_Wood_JNER_14_080_Specification_Sheet.pdf